/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive/MultCommutative-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 18:11:52,390 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 18:11:52,394 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 18:11:52,438 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 18:11:52,439 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 18:11:52,448 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 18:11:52,451 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 18:11:52,456 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 18:11:52,458 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 18:11:52,461 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 18:11:52,463 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 18:11:52,465 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 18:11:52,465 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 18:11:52,468 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 18:11:52,470 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 18:11:52,472 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 18:11:52,474 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 18:11:52,475 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 18:11:52,477 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 18:11:52,485 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 18:11:52,488 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 18:11:52,489 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 18:11:52,490 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 18:11:52,491 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 18:11:52,500 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 18:11:52,500 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 18:11:52,500 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 18:11:52,502 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 18:11:52,502 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 18:11:52,503 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 18:11:52,504 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 18:11:52,508 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 18:11:52,509 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 18:11:52,510 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 18:11:52,511 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 18:11:52,511 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 18:11:52,512 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 18:11:52,512 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 18:11:52,515 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 18:11:52,516 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 18:11:52,518 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 18:11:52,519 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 18:11:52,564 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 18:11:52,564 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 18:11:52,566 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 18:11:52,567 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 18:11:52,567 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 18:11:52,567 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 18:11:52,567 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 18:11:52,568 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 18:11:52,568 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 18:11:52,568 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 18:11:52,569 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 18:11:52,570 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 18:11:52,570 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 18:11:52,570 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 18:11:52,570 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 18:11:52,571 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 18:11:52,571 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 18:11:52,571 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 18:11:52,571 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 18:11:52,571 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 18:11:52,572 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 18:11:52,572 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 18:11:52,572 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 18:11:52,572 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 18:11:52,572 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 18:11:52,573 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 18:11:52,573 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 18:11:52,573 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 18:11:52,573 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 18:11:52,573 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-24 18:11:53,029 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 18:11:53,054 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 18:11:53,060 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 18:11:53,065 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 18:11:53,066 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 18:11:53,067 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/MultCommutative-2.c [2020-09-24 18:11:53,159 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/69c2909b6/182444ac99984989bdf9157c18030e4d/FLAG9c3be9a64 [2020-09-24 18:11:53,748 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 18:11:53,749 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive/MultCommutative-2.c [2020-09-24 18:11:53,758 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/69c2909b6/182444ac99984989bdf9157c18030e4d/FLAG9c3be9a64 [2020-09-24 18:11:54,100 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/69c2909b6/182444ac99984989bdf9157c18030e4d [2020-09-24 18:11:54,116 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 18:11:54,122 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 18:11:54,124 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 18:11:54,124 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 18:11:54,128 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 18:11:54,129 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:11:54" (1/1) ... [2020-09-24 18:11:54,134 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5035f6b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:11:54, skipping insertion in model container [2020-09-24 18:11:54,134 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:11:54" (1/1) ... [2020-09-24 18:11:54,143 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 18:11:54,167 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 18:11:54,379 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:11:54,385 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 18:11:54,404 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:11:54,420 INFO L208 MainTranslator]: Completed translation [2020-09-24 18:11:54,421 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:11:54 WrapperNode [2020-09-24 18:11:54,421 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 18:11:54,422 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 18:11:54,422 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 18:11:54,422 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 18:11:54,435 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:11:54" (1/1) ... [2020-09-24 18:11:54,436 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:11:54" (1/1) ... [2020-09-24 18:11:54,526 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:11:54" (1/1) ... [2020-09-24 18:11:54,527 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:11:54" (1/1) ... [2020-09-24 18:11:54,531 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:11:54" (1/1) ... [2020-09-24 18:11:54,534 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:11:54" (1/1) ... [2020-09-24 18:11:54,535 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:11:54" (1/1) ... [2020-09-24 18:11:54,537 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 18:11:54,537 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 18:11:54,538 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 18:11:54,538 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 18:11:54,539 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:11:54" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 18:11:54,616 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 18:11:54,617 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 18:11:54,617 INFO L138 BoogieDeclarations]: Found implementation of procedure mult [2020-09-24 18:11:54,617 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 18:11:54,617 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 18:11:54,618 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 18:11:54,618 INFO L130 BoogieDeclarations]: Found specification of procedure mult [2020-09-24 18:11:54,618 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 18:11:54,618 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 18:11:54,618 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 18:11:54,951 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 18:11:54,951 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 18:11:54,956 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:11:54 BoogieIcfgContainer [2020-09-24 18:11:54,956 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 18:11:54,958 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 18:11:54,958 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 18:11:54,962 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 18:11:54,962 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 06:11:54" (1/3) ... [2020-09-24 18:11:54,963 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@409a88ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:11:54, skipping insertion in model container [2020-09-24 18:11:54,964 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:11:54" (2/3) ... [2020-09-24 18:11:54,964 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@409a88ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:11:54, skipping insertion in model container [2020-09-24 18:11:54,964 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:11:54" (3/3) ... [2020-09-24 18:11:54,966 INFO L109 eAbstractionObserver]: Analyzing ICFG MultCommutative-2.c [2020-09-24 18:11:54,977 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 18:11:54,986 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 18:11:55,007 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 18:11:55,036 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 18:11:55,037 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 18:11:55,037 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 18:11:55,037 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 18:11:55,037 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 18:11:55,037 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 18:11:55,037 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 18:11:55,038 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 18:11:55,059 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2020-09-24 18:11:55,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-09-24 18:11:55,069 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:11:55,070 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-24 18:11:55,071 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:11:55,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:11:55,077 INFO L82 PathProgramCache]: Analyzing trace with hash 2060884630, now seen corresponding path program 1 times [2020-09-24 18:11:55,087 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:11:55,087 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [90976282] [2020-09-24 18:11:55,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:11:55,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:55,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:55,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:55,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:56,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:56,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 18:11:56,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 18:11:56,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1080 [2020-09-24 18:11:56,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:56,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:11:56,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-09-24 18:11:56,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-24 18:11:56,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-24 18:11:56,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:11:56,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:56,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:56,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:56,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:11:56,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:11:56,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 18:11:56,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:56,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:11:56,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:11:56,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:11:56,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:11:56,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 18:11:56,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:56,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:56,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:56,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 18:11:56,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:11:56,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 18:11:56,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:56,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:11:56,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:11:56,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:11:56,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:11:56,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-24 18:11:56,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:56,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:56,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:56,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 18:11:56,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:11:56,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-24 18:11:56,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:56,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:11:56,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:11:56,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 18:11:56,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:11:56,517 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-24 18:11:56,518 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [90976282] [2020-09-24 18:11:56,521 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:11:56,522 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 18:11:56,523 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249791621] [2020-09-24 18:11:56,540 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:11:56,541 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:11:56,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:11:56,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:11:56,563 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 5 states. [2020-09-24 18:11:56,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:11:56,707 INFO L93 Difference]: Finished difference Result 60 states and 70 transitions. [2020-09-24 18:11:56,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 18:11:56,710 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 36 [2020-09-24 18:11:56,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:11:56,724 INFO L225 Difference]: With dead ends: 60 [2020-09-24 18:11:56,725 INFO L226 Difference]: Without dead ends: 40 [2020-09-24 18:11:56,729 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:11:56,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-09-24 18:11:56,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-09-24 18:11:56,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-09-24 18:11:56,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 46 transitions. [2020-09-24 18:11:56,792 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 46 transitions. Word has length 36 [2020-09-24 18:11:56,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:11:56,793 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 46 transitions. [2020-09-24 18:11:56,793 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:11:56,793 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 46 transitions. [2020-09-24 18:11:56,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-09-24 18:11:56,796 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:11:56,797 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:11:56,797 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 18:11:56,797 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:11:56,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:11:56,798 INFO L82 PathProgramCache]: Analyzing trace with hash 1175562347, now seen corresponding path program 1 times [2020-09-24 18:11:56,798 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:11:56,799 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1395255264] [2020-09-24 18:11:56,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:11:56,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:56,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:56,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:56,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-24 18:11:56,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:11:56,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-09-24 18:11:56,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:56,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:11:56,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 18:11:56,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-24 18:11:56,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:11:56,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:11:56,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:56,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:56,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:56,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:11:56,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:11:56,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 18:11:56,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:56,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:11:56,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:11:56,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:11:56,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:11:56,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 18:11:56,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:56,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:56,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:56,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 18:11:56,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:11:56,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-24 18:11:56,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:56,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:11:56,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:11:56,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 18:11:56,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:11:56,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-24 18:11:56,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:56,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:57,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:57,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:11:57,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:11:57,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-24 18:11:57,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:57,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:11:57,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:11:57,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-24 18:11:57,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:11:57,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 18:11:57,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:57,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:57,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:57,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 18:11:57,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:11:57,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 18:11:57,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:57,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:11:57,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:11:57,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:11:57,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:11:57,031 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-24 18:11:57,031 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1395255264] [2020-09-24 18:11:57,031 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:11:57,032 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:11:57,032 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281096681] [2020-09-24 18:11:57,034 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:11:57,034 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:11:57,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:11:57,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:11:57,035 INFO L87 Difference]: Start difference. First operand 40 states and 46 transitions. Second operand 5 states. [2020-09-24 18:11:57,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:11:57,113 INFO L93 Difference]: Finished difference Result 55 states and 63 transitions. [2020-09-24 18:11:57,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 18:11:57,114 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 46 [2020-09-24 18:11:57,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:11:57,117 INFO L225 Difference]: With dead ends: 55 [2020-09-24 18:11:57,117 INFO L226 Difference]: Without dead ends: 45 [2020-09-24 18:11:57,118 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:11:57,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-09-24 18:11:57,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-09-24 18:11:57,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-09-24 18:11:57,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 52 transitions. [2020-09-24 18:11:57,129 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 52 transitions. Word has length 46 [2020-09-24 18:11:57,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:11:57,130 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 52 transitions. [2020-09-24 18:11:57,130 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:11:57,130 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 52 transitions. [2020-09-24 18:11:57,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-09-24 18:11:57,133 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:11:57,133 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 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] [2020-09-24 18:11:57,133 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 18:11:57,133 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:11:57,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:11:57,134 INFO L82 PathProgramCache]: Analyzing trace with hash 942191350, now seen corresponding path program 2 times [2020-09-24 18:11:57,134 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:11:57,134 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1308740530] [2020-09-24 18:11:57,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:11:57,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:57,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:57,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:57,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-24 18:11:57,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:11:57,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 799 [2020-09-24 18:11:57,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:57,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-24 18:11:57,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 18:11:57,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-24 18:11:57,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:11:58,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:11:58,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:58,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:58,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:58,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:11:58,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:11:58,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 18:11:58,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:58,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:11:58,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:11:58,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:11:58,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:11:58,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 18:11:58,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:58,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:58,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:58,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:11:58,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:11:58,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-09-24 18:11:58,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:58,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 18:11:58,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:11:58,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-24 18:11:58,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:11:58,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 18:11:58,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:58,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:58,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:58,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 18:11:58,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:11:58,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-09-24 18:11:58,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:58,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 18:11:58,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:11:58,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 18:11:58,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:11:58,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-24 18:11:58,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:58,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:58,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:58,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:11:58,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:11:58,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-09-24 18:11:58,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:58,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 18:11:58,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:11:58,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-24 18:11:58,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:11:58,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 18:11:58,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:58,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:58,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:58,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 18:11:58,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:11:58,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-24 18:11:58,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:58,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 18:11:58,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:11:58,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 18:11:58,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:11:58,676 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 1 proven. 27 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-09-24 18:11:58,677 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1308740530] [2020-09-24 18:11:58,677 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:11:58,677 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-24 18:11:58,678 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275836867] [2020-09-24 18:11:58,678 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-24 18:11:58,679 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:11:58,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-24 18:11:58,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2020-09-24 18:11:58,680 INFO L87 Difference]: Start difference. First operand 45 states and 52 transitions. Second operand 16 states. [2020-09-24 18:11:59,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:11:59,340 INFO L93 Difference]: Finished difference Result 68 states and 79 transitions. [2020-09-24 18:11:59,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-24 18:11:59,340 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 56 [2020-09-24 18:11:59,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:11:59,343 INFO L225 Difference]: With dead ends: 68 [2020-09-24 18:11:59,343 INFO L226 Difference]: Without dead ends: 62 [2020-09-24 18:11:59,344 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 11 SyntacticMatches, 3 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=108, Invalid=542, Unknown=0, NotChecked=0, Total=650 [2020-09-24 18:11:59,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-09-24 18:11:59,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 56. [2020-09-24 18:11:59,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-09-24 18:11:59,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 68 transitions. [2020-09-24 18:11:59,359 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 68 transitions. Word has length 56 [2020-09-24 18:11:59,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:11:59,360 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 68 transitions. [2020-09-24 18:11:59,360 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-24 18:11:59,360 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 68 transitions. [2020-09-24 18:11:59,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-09-24 18:11:59,362 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:11:59,363 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:11:59,363 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 18:11:59,363 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:11:59,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:11:59,364 INFO L82 PathProgramCache]: Analyzing trace with hash -156864787, now seen corresponding path program 1 times [2020-09-24 18:11:59,364 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:11:59,364 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1537354618] [2020-09-24 18:11:59,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:11:59,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:59,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:59,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:59,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:00,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:00,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:01,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:02,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:12:02,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-24 18:12:02,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 18:12:02,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2731 [2020-09-24 18:12:02,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:12:02,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:12:02,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-09-24 18:12:02,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 18:12:02,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:12:02,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:12:02,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:12:02,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:02,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:12:02,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:12:02,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:12:02,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 18:12:02,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:12:02,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:12:02,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:12:02,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:12:02,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:12:02,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 18:12:02,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:12:02,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:02,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:12:02,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:12:02,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:12:02,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 18:12:02,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:12:02,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:12:02,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:12:02,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:12:02,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:12:02,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 18:12:02,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:12:02,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:02,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:12:02,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 18:12:02,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:12:02,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 18:12:02,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:12:02,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:12:02,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:12:02,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:12:02,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:12:02,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-24 18:12:02,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:12:02,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:02,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:02,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:12:02,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-24 18:12:02,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 18:12:02,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 204 [2020-09-24 18:12:02,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:12:02,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:12:02,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 18:12:02,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 18:12:02,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:12:02,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 18:12:02,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:12:02,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:02,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:12:02,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-24 18:12:02,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:12:02,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-24 18:12:02,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:12:02,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:12:02,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-09-24 18:12:02,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 18:12:02,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:12:02,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 18:12:02,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:12:02,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:02,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:12:02,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 18:12:02,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:12:02,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 18:12:02,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:12:02,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:12:02,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-24 18:12:02,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 18:12:02,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:12:02,457 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-09-24 18:12:02,458 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1537354618] [2020-09-24 18:12:02,458 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:12:02,458 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 18:12:02,459 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973501307] [2020-09-24 18:12:02,459 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:12:02,459 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:12:02,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:12:02,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:12:02,460 INFO L87 Difference]: Start difference. First operand 56 states and 68 transitions. Second operand 5 states. [2020-09-24 18:12:02,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:12:02,532 INFO L93 Difference]: Finished difference Result 95 states and 128 transitions. [2020-09-24 18:12:02,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 18:12:02,532 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 65 [2020-09-24 18:12:02,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:12:02,534 INFO L225 Difference]: With dead ends: 95 [2020-09-24 18:12:02,535 INFO L226 Difference]: Without dead ends: 56 [2020-09-24 18:12:02,536 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:12:02,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-09-24 18:12:02,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-09-24 18:12:02,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-09-24 18:12:02,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 68 transitions. [2020-09-24 18:12:02,547 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 68 transitions. Word has length 65 [2020-09-24 18:12:02,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:12:02,548 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 68 transitions. [2020-09-24 18:12:02,548 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:12:02,548 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 68 transitions. [2020-09-24 18:12:02,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-09-24 18:12:02,550 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:12:02,551 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:12:02,551 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 18:12:02,551 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:12:02,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:12:02,552 INFO L82 PathProgramCache]: Analyzing trace with hash -1957858366, now seen corresponding path program 2 times [2020-09-24 18:12:02,552 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:12:02,552 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [813040639] [2020-09-24 18:12:02,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:12:02,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:12:02,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:02,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:02,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:02,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:02,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:03,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:03,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:04,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:04,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:04,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:04,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:07,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:12:07,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-09-24 18:12:07,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-24 18:12:07,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-24 18:12:07,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:12:07,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 18:12:07,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-09-24 18:12:07,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 18:12:07,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:12:07,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:12:07,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:12:07,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:07,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:12:07,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:12:07,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:12:07,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 18:12:07,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:12:07,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:12:07,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:12:07,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:12:07,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:12:07,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 18:12:07,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:12:07,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:07,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:12:07,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:12:07,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:12:07,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 18:12:07,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:12:07,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:12:07,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:12:07,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:12:07,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:12:07,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 18:12:07,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:12:07,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:07,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:12:07,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 18:12:07,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:12:07,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 18:12:07,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:12:07,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:12:07,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:12:07,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:12:07,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:12:07,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-24 18:12:07,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:12:07,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:07,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:07,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:07,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:08,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:12:08,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-24 18:12:08,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 18:12:08,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 860 [2020-09-24 18:12:08,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:12:08,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 18:12:08,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-09-24 18:12:08,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 18:12:08,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:12:08,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 18:12:08,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:12:08,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:08,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:08,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:08,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:08,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:12:08,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-24 18:12:08,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 18:12:08,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 358 [2020-09-24 18:12:08,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:12:08,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:12:08,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-24 18:12:08,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-24 18:12:08,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:12:08,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 18:12:08,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:12:08,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:08,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:12:08,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:12:08,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:12:08,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 18:12:08,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:12:08,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:12:08,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:12:08,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-24 18:12:08,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:12:08,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 18:12:08,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:12:08,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:08,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:12:08,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 18:12:08,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:12:08,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 18:12:08,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:12:08,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:12:08,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:12:08,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:12:08,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:12:08,947 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 30 proven. 5 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2020-09-24 18:12:08,947 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [813040639] [2020-09-24 18:12:08,948 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:12:08,948 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-24 18:12:08,948 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225517873] [2020-09-24 18:12:08,950 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 18:12:08,950 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:12:08,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 18:12:08,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:12:08,951 INFO L87 Difference]: Start difference. First operand 56 states and 68 transitions. Second operand 6 states. [2020-09-24 18:12:09,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:12:09,031 INFO L93 Difference]: Finished difference Result 90 states and 116 transitions. [2020-09-24 18:12:09,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:12:09,032 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 75 [2020-09-24 18:12:09,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:12:09,035 INFO L225 Difference]: With dead ends: 90 [2020-09-24 18:12:09,035 INFO L226 Difference]: Without dead ends: 51 [2020-09-24 18:12:09,038 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-09-24 18:12:09,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-09-24 18:12:09,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2020-09-24 18:12:09,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-09-24 18:12:09,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 59 transitions. [2020-09-24 18:12:09,052 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 59 transitions. Word has length 75 [2020-09-24 18:12:09,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:12:09,054 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 59 transitions. [2020-09-24 18:12:09,054 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 18:12:09,054 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 59 transitions. [2020-09-24 18:12:09,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-09-24 18:12:09,057 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:12:09,057 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:12:09,058 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 18:12:09,059 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:12:09,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:12:09,059 INFO L82 PathProgramCache]: Analyzing trace with hash 387973505, now seen corresponding path program 3 times [2020-09-24 18:12:09,059 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:12:09,060 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1640123219] [2020-09-24 18:12:09,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:12:09,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:12:09,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:09,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:12:09,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-24 18:12:09,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:12:09,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 783 [2020-09-24 18:12:09,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:12:09,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-09-24 18:12:09,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 18:12:09,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-09-24 18:12:09,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:12:09,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:12:09,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:12:09,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:09,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:12:09,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:12:09,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:12:09,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 18:12:09,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:12:09,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:12:09,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:12:09,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:12:09,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:12:09,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 18:12:09,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:12:09,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:09,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:12:09,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:12:09,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:12:09,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-09-24 18:12:09,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:12:09,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 18:12:09,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:12:09,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-24 18:12:09,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:12:10,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 18:12:10,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:12:10,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:10,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:12:10,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 18:12:10,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:12:10,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-24 18:12:10,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:12:10,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 18:12:10,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:12:10,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 18:12:10,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:12:10,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-24 18:12:10,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:12:10,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:10,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:12:10,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-24 18:12:10,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:12:10,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 223 [2020-09-24 18:12:10,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:12:10,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-24 18:12:10,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:12:10,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-24 18:12:10,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:12:10,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 18:12:10,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:12:10,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:10,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:12:10,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:12:10,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:12:10,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-09-24 18:12:10,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:12:10,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 18:12:10,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:12:10,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-24 18:12:10,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:12:10,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 18:12:10,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:12:10,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:10,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:12:10,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 18:12:10,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:12:10,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-24 18:12:10,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:12:10,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 18:12:10,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:12:10,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 18:12:10,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:12:10,731 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 12 proven. 39 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-09-24 18:12:10,732 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1640123219] [2020-09-24 18:12:10,733 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:12:10,734 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-09-24 18:12:10,734 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123160962] [2020-09-24 18:12:10,735 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-09-24 18:12:10,735 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:12:10,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-09-24 18:12:10,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2020-09-24 18:12:10,736 INFO L87 Difference]: Start difference. First operand 51 states and 59 transitions. Second operand 18 states. [2020-09-24 18:12:11,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:12:11,456 INFO L93 Difference]: Finished difference Result 68 states and 78 transitions. [2020-09-24 18:12:11,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-24 18:12:11,456 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 66 [2020-09-24 18:12:11,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:12:11,458 INFO L225 Difference]: With dead ends: 68 [2020-09-24 18:12:11,459 INFO L226 Difference]: Without dead ends: 62 [2020-09-24 18:12:11,460 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 14 SyntacticMatches, 3 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=126, Invalid=744, Unknown=0, NotChecked=0, Total=870 [2020-09-24 18:12:11,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-09-24 18:12:11,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 56. [2020-09-24 18:12:11,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-09-24 18:12:11,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 67 transitions. [2020-09-24 18:12:11,468 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 67 transitions. Word has length 66 [2020-09-24 18:12:11,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:12:11,469 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 67 transitions. [2020-09-24 18:12:11,469 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-09-24 18:12:11,469 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 67 transitions. [2020-09-24 18:12:11,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-09-24 18:12:11,470 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:12:11,470 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 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] [2020-09-24 18:12:11,471 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 18:12:11,471 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:12:11,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:12:11,471 INFO L82 PathProgramCache]: Analyzing trace with hash 681092950, now seen corresponding path program 4 times [2020-09-24 18:12:11,472 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:12:11,472 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1257493295] [2020-09-24 18:12:11,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:12:11,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:12:11,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:12,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:12:12,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-09-24 18:12:12,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:12:12,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 997 [2020-09-24 18:12:12,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:12:12,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-09-24 18:12:12,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 18:12:12,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-24 18:12:12,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:12:12,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:12:12,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:12:12,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:12,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:12:12,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:12:12,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:12:12,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 18:12:12,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:12:12,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:12:12,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:12:12,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:12:12,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:12:12,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 18:12:12,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:12:12,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:12,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:12:12,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:12:12,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:12:12,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-24 18:12:12,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:12:12,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 18:12:12,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:12:12,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-24 18:12:12,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:12:12,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 18:12:12,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:12:12,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:12,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:12:12,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 18:12:12,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:12:12,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-24 18:12:12,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:12:12,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 18:12:12,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:12:12,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 18:12:12,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:12:12,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-24 18:12:12,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:12:12,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:13,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:12:13,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-24 18:12:13,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:12:13,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 331 [2020-09-24 18:12:13,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:12:13,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-24 18:12:13,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:12:13,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-24 18:12:13,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:12:13,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 18:12:13,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:12:13,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:13,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:12:13,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-24 18:12:13,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:12:13,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 246 [2020-09-24 18:12:13,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:12:13,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-24 18:12:13,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:12:13,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-24 18:12:13,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:12:13,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 18:12:13,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:12:13,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:13,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:12:13,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:12:13,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:12:13,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-09-24 18:12:13,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:12:13,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 18:12:13,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:12:13,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-24 18:12:13,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:12:13,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 18:12:13,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:12:13,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:13,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:12:13,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 18:12:13,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:12:13,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-24 18:12:13,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:12:13,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 18:12:13,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:12:13,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 18:12:13,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:12:13,746 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 21 proven. 63 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2020-09-24 18:12:13,746 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1257493295] [2020-09-24 18:12:13,747 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:12:13,747 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-09-24 18:12:13,748 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406826546] [2020-09-24 18:12:13,750 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-09-24 18:12:13,750 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:12:13,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-09-24 18:12:13,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=449, Unknown=0, NotChecked=0, Total=506 [2020-09-24 18:12:13,751 INFO L87 Difference]: Start difference. First operand 56 states and 67 transitions. Second operand 23 states. [2020-09-24 18:12:14,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:12:14,802 INFO L93 Difference]: Finished difference Result 64 states and 74 transitions. [2020-09-24 18:12:14,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-09-24 18:12:14,803 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 76 [2020-09-24 18:12:14,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:12:14,805 INFO L225 Difference]: With dead ends: 64 [2020-09-24 18:12:14,805 INFO L226 Difference]: Without dead ends: 54 [2020-09-24 18:12:14,807 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 15 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 294 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=217, Invalid=1343, Unknown=0, NotChecked=0, Total=1560 [2020-09-24 18:12:14,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-09-24 18:12:14,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 47. [2020-09-24 18:12:14,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-09-24 18:12:14,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 53 transitions. [2020-09-24 18:12:14,822 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 53 transitions. Word has length 76 [2020-09-24 18:12:14,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:12:14,823 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 53 transitions. [2020-09-24 18:12:14,823 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-09-24 18:12:14,823 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 53 transitions. [2020-09-24 18:12:14,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-09-24 18:12:14,824 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:12:14,824 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:12:14,824 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 18:12:14,824 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:12:14,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:12:14,826 INFO L82 PathProgramCache]: Analyzing trace with hash -516505397, now seen corresponding path program 5 times [2020-09-24 18:12:14,826 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:12:14,826 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1612395202] [2020-09-24 18:12:14,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:12:14,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:12:14,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:15,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:12:15,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-24 18:12:15,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:12:15,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 666 [2020-09-24 18:12:15,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:12:15,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-09-24 18:12:15,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 18:12:15,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-09-24 18:12:15,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:12:15,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:12:15,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:12:15,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:15,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:12:15,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:12:15,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:12:15,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 18:12:15,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:12:15,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:12:15,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:12:15,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:12:15,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:12:15,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 18:12:15,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:12:15,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:15,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:12:15,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-24 18:12:15,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:12:15,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-09-24 18:12:15,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:12:15,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-24 18:12:15,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:12:15,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-24 18:12:15,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:12:15,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 18:12:15,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:12:15,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:15,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:12:15,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:12:15,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:12:15,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-09-24 18:12:15,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:12:15,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 18:12:15,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:12:15,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-24 18:12:15,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:12:15,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 18:12:15,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:12:15,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:15,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:12:15,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 18:12:15,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:12:15,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-24 18:12:15,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:12:15,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 18:12:15,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:12:15,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 18:12:15,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:12:16,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-24 18:12:16,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:12:16,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:16,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:12:16,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:12:16,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:12:16,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-09-24 18:12:16,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:12:16,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 18:12:16,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:12:16,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-24 18:12:16,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:12:16,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 18:12:16,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:12:16,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:16,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:12:16,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 18:12:16,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:12:16,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 18:12:16,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:12:16,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 18:12:16,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:12:16,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 18:12:16,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:12:16,316 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 3 proven. 42 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-09-24 18:12:16,317 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1612395202] [2020-09-24 18:12:16,317 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:12:16,317 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-24 18:12:16,318 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086235998] [2020-09-24 18:12:16,318 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-24 18:12:16,319 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:12:16,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-24 18:12:16,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2020-09-24 18:12:16,320 INFO L87 Difference]: Start difference. First operand 47 states and 53 transitions. Second operand 17 states. [2020-09-24 18:12:17,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:12:17,020 INFO L93 Difference]: Finished difference Result 68 states and 78 transitions. [2020-09-24 18:12:17,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-24 18:12:17,021 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 66 [2020-09-24 18:12:17,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:12:17,022 INFO L225 Difference]: With dead ends: 68 [2020-09-24 18:12:17,022 INFO L226 Difference]: Without dead ends: 62 [2020-09-24 18:12:17,023 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 11 SyntacticMatches, 7 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=116, Invalid=696, Unknown=0, NotChecked=0, Total=812 [2020-09-24 18:12:17,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-09-24 18:12:17,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 56. [2020-09-24 18:12:17,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-09-24 18:12:17,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 67 transitions. [2020-09-24 18:12:17,043 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 67 transitions. Word has length 66 [2020-09-24 18:12:17,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:12:17,044 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 67 transitions. [2020-09-24 18:12:17,045 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-24 18:12:17,045 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 67 transitions. [2020-09-24 18:12:17,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-09-24 18:12:17,048 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:12:17,048 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:12:17,048 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 18:12:17,048 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:12:17,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:12:17,049 INFO L82 PathProgramCache]: Analyzing trace with hash -298524793, now seen corresponding path program 3 times [2020-09-24 18:12:17,049 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:12:17,049 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [878672413] [2020-09-24 18:12:17,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:12:17,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:12:17,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:17,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:17,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:17,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:17,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:17,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:17,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:17,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:18,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:12:18,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-24 18:12:18,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 18:12:18,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1299 [2020-09-24 18:12:18,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:12:18,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:12:18,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 18:12:18,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 18:12:18,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:12:18,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:12:18,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:12:18,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:18,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:12:18,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:12:18,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:12:18,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 18:12:18,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:12:18,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:12:18,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:12:18,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:12:18,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:12:18,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 18:12:18,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:12:18,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:18,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:18,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:18,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:18,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:12:18,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-24 18:12:18,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 18:12:18,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 410 [2020-09-24 18:12:18,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:12:18,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:12:18,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-24 18:12:18,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-24 18:12:18,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:12:18,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 18:12:18,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:12:18,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:18,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:12:18,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:12:18,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:12:18,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 18:12:18,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:12:18,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:12:18,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:12:18,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-24 18:12:18,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:12:18,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 18:12:18,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:12:18,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:18,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:12:18,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 18:12:18,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:12:18,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 18:12:18,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:12:18,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:12:18,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:12:18,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:12:18,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:12:18,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-09-24 18:12:18,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:12:18,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:18,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:12:18,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:12:18,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:12:18,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 18:12:18,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:12:18,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:12:18,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-24 18:12:18,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:12:18,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:12:18,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 18:12:18,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:12:18,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:18,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:12:18,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 18:12:18,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:12:18,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 18:12:18,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:12:18,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:12:18,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:12:18,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:12:18,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:12:18,866 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2020-09-24 18:12:18,866 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [878672413] [2020-09-24 18:12:18,866 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:12:18,867 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:12:18,867 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250829364] [2020-09-24 18:12:18,867 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:12:18,867 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:12:18,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:12:18,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:12:18,868 INFO L87 Difference]: Start difference. First operand 56 states and 67 transitions. Second operand 5 states. [2020-09-24 18:12:18,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:12:18,920 INFO L93 Difference]: Finished difference Result 95 states and 112 transitions. [2020-09-24 18:12:18,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 18:12:18,922 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 65 [2020-09-24 18:12:18,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:12:18,923 INFO L225 Difference]: With dead ends: 95 [2020-09-24 18:12:18,924 INFO L226 Difference]: Without dead ends: 50 [2020-09-24 18:12:18,924 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:12:18,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-09-24 18:12:18,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-09-24 18:12:18,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-24 18:12:18,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 57 transitions. [2020-09-24 18:12:18,936 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 57 transitions. Word has length 65 [2020-09-24 18:12:18,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:12:18,936 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 57 transitions. [2020-09-24 18:12:18,936 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:12:18,936 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 57 transitions. [2020-09-24 18:12:18,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-09-24 18:12:18,937 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:12:18,937 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 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] [2020-09-24 18:12:18,938 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 18:12:18,938 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:12:18,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:12:18,938 INFO L82 PathProgramCache]: Analyzing trace with hash -972388074, now seen corresponding path program 6 times [2020-09-24 18:12:18,938 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:12:18,939 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1960420099] [2020-09-24 18:12:18,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:12:18,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:12:18,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:19,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:12:19,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-09-24 18:12:19,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:12:19,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1003 [2020-09-24 18:12:19,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:12:19,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-09-24 18:12:19,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 18:12:19,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-24 18:12:19,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:12:20,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:12:20,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:12:20,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:20,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:12:20,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:12:20,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:12:20,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 18:12:20,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:12:20,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:12:20,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:12:20,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:12:20,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:12:20,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 18:12:20,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:12:20,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:20,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:12:20,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-24 18:12:20,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:12:20,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-09-24 18:12:20,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:12:20,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-24 18:12:20,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:12:20,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-24 18:12:20,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:12:20,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 18:12:20,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:12:20,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:20,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:12:20,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:12:20,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:12:20,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-09-24 18:12:20,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:12:20,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 18:12:20,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:12:20,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-24 18:12:20,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:12:20,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 18:12:20,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:12:20,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:20,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:12:20,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 18:12:20,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:12:20,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 18:12:20,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:12:20,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 18:12:20,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:12:20,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 18:12:20,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:12:20,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-24 18:12:20,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:12:20,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:20,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:12:20,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-24 18:12:20,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:12:20,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 187 [2020-09-24 18:12:20,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:12:20,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-24 18:12:20,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:12:20,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-24 18:12:20,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:12:20,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 18:12:20,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:12:20,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:20,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:12:20,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:12:20,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:12:20,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-09-24 18:12:20,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:12:20,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 18:12:20,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:12:20,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-24 18:12:20,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:12:20,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 18:12:20,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:12:20,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:20,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:12:20,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 18:12:20,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:12:20,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-24 18:12:20,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:12:20,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 18:12:20,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:12:20,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 18:12:20,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:12:20,913 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 7 proven. 64 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2020-09-24 18:12:20,913 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1960420099] [2020-09-24 18:12:20,914 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:12:20,914 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-24 18:12:20,914 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86961205] [2020-09-24 18:12:20,915 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-24 18:12:20,915 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:12:20,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-24 18:12:20,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2020-09-24 18:12:20,916 INFO L87 Difference]: Start difference. First operand 50 states and 57 transitions. Second operand 17 states. [2020-09-24 18:12:21,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:12:21,479 INFO L93 Difference]: Finished difference Result 62 states and 67 transitions. [2020-09-24 18:12:21,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-24 18:12:21,479 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 76 [2020-09-24 18:12:21,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:12:21,480 INFO L225 Difference]: With dead ends: 62 [2020-09-24 18:12:21,481 INFO L226 Difference]: Without dead ends: 56 [2020-09-24 18:12:21,481 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 16 SyntacticMatches, 7 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=121, Invalid=691, Unknown=0, NotChecked=0, Total=812 [2020-09-24 18:12:21,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-09-24 18:12:21,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 50. [2020-09-24 18:12:21,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-24 18:12:21,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 56 transitions. [2020-09-24 18:12:21,487 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 56 transitions. Word has length 76 [2020-09-24 18:12:21,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:12:21,487 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 56 transitions. [2020-09-24 18:12:21,487 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-24 18:12:21,488 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 56 transitions. [2020-09-24 18:12:21,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-09-24 18:12:21,488 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:12:21,488 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 5, 5, 5, 5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:12:21,489 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-24 18:12:21,489 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:12:21,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:12:21,489 INFO L82 PathProgramCache]: Analyzing trace with hash -27101013, now seen corresponding path program 7 times [2020-09-24 18:12:21,490 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:12:21,490 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1761833339] [2020-09-24 18:12:21,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:12:21,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:12:21,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:22,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:12:22,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-09-24 18:12:22,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:12:22,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1037 [2020-09-24 18:12:22,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:12:22,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 38 [2020-09-24 18:12:22,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 18:12:22,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-24 18:12:22,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:12:22,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:12:22,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:12:22,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:22,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:12:22,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:12:22,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:12:22,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 18:12:22,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:12:22,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:12:22,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:12:22,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:12:22,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:12:22,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 18:12:22,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:12:22,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:22,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:12:22,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-24 18:12:22,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:12:22,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-09-24 18:12:22,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:12:22,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-24 18:12:22,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:12:22,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-24 18:12:22,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:12:22,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 18:12:22,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:12:22,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:22,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:12:22,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:12:22,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:12:22,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-09-24 18:12:22,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:12:22,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 18:12:22,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:12:22,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-24 18:12:22,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:12:22,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 18:12:22,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:12:22,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:22,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:12:22,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 18:12:22,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:12:22,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-24 18:12:22,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:12:23,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 18:12:23,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:12:23,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 18:12:23,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:12:23,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-24 18:12:23,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:12:23,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:23,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:12:23,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-24 18:12:23,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:12:23,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 400 [2020-09-24 18:12:23,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:12:23,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-24 18:12:23,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:12:23,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-24 18:12:23,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:12:23,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 18:12:23,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:12:23,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:23,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:12:23,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-24 18:12:23,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:12:23,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-09-24 18:12:23,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:12:23,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-24 18:12:23,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:12:23,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-24 18:12:23,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:12:23,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 18:12:23,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:12:23,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:23,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:12:23,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:12:23,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:12:23,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-09-24 18:12:23,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:12:23,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 18:12:23,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:12:23,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-24 18:12:23,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:12:24,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 18:12:24,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:12:24,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:24,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:12:24,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 18:12:24,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:12:24,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-24 18:12:24,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:12:24,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 18:12:24,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:12:24,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 18:12:24,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:12:24,137 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 18 proven. 103 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2020-09-24 18:12:24,137 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1761833339] [2020-09-24 18:12:24,138 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:12:24,138 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-09-24 18:12:24,138 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844426185] [2020-09-24 18:12:24,139 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-09-24 18:12:24,139 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:12:24,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-09-24 18:12:24,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=449, Unknown=0, NotChecked=0, Total=506 [2020-09-24 18:12:24,140 INFO L87 Difference]: Start difference. First operand 50 states and 56 transitions. Second operand 23 states. [2020-09-24 18:12:25,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:12:25,167 INFO L93 Difference]: Finished difference Result 67 states and 74 transitions. [2020-09-24 18:12:25,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-24 18:12:25,168 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 86 [2020-09-24 18:12:25,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:12:25,170 INFO L225 Difference]: With dead ends: 67 [2020-09-24 18:12:25,170 INFO L226 Difference]: Without dead ends: 61 [2020-09-24 18:12:25,171 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=183, Invalid=1223, Unknown=0, NotChecked=0, Total=1406 [2020-09-24 18:12:25,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-09-24 18:12:25,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 55. [2020-09-24 18:12:25,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-09-24 18:12:25,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 63 transitions. [2020-09-24 18:12:25,178 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 63 transitions. Word has length 86 [2020-09-24 18:12:25,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:12:25,178 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 63 transitions. [2020-09-24 18:12:25,178 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-09-24 18:12:25,178 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 63 transitions. [2020-09-24 18:12:25,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-09-24 18:12:25,179 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:12:25,179 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 6, 6, 6, 6, 6, 6, 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] [2020-09-24 18:12:25,180 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-24 18:12:25,184 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:12:25,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:12:25,184 INFO L82 PathProgramCache]: Analyzing trace with hash -694157514, now seen corresponding path program 8 times [2020-09-24 18:12:25,185 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:12:25,185 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1103153623] [2020-09-24 18:12:25,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:12:25,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:12:25,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:26,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:12:26,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-09-24 18:12:26,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:12:26,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1410 [2020-09-24 18:12:26,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:12:26,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 43 [2020-09-24 18:12:26,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 18:12:26,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-09-24 18:12:26,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:12:26,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:12:26,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:12:26,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:26,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:12:26,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:12:26,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:12:26,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 18:12:26,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:12:26,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:12:26,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:12:26,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:12:26,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:12:26,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 18:12:26,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:12:26,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:26,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:12:26,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-24 18:12:26,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:12:26,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-09-24 18:12:26,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:12:26,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-24 18:12:26,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:12:26,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-24 18:12:26,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:12:26,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 18:12:26,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:12:26,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:26,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:12:26,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:12:26,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:12:26,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-09-24 18:12:26,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:12:26,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 18:12:26,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:12:26,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-24 18:12:26,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:12:26,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 18:12:26,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:12:26,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:27,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:12:27,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 18:12:27,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:12:27,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-24 18:12:27,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:12:27,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 18:12:27,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:12:27,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 18:12:27,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:12:27,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-24 18:12:27,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:12:27,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:27,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:12:27,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-24 18:12:27,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:12:27,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 515 [2020-09-24 18:12:27,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:12:27,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-09-24 18:12:27,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:12:27,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-24 18:12:27,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:12:27,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 18:12:27,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:12:27,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:27,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:12:27,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-24 18:12:27,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:12:27,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 214 [2020-09-24 18:12:27,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:12:27,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-24 18:12:27,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:12:27,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-24 18:12:27,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:12:27,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 18:12:27,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:12:27,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:28,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:12:28,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-24 18:12:28,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:12:28,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-09-24 18:12:28,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:12:28,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-24 18:12:28,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:12:28,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-24 18:12:28,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:12:28,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 18:12:28,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:12:28,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:28,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:12:28,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:12:28,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:12:28,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-09-24 18:12:28,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:12:28,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 18:12:28,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:12:28,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-24 18:12:28,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:12:28,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 18:12:28,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:12:28,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:28,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:12:28,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 18:12:28,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:12:28,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-24 18:12:28,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:12:28,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 18:12:28,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:12:28,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 18:12:28,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:12:28,555 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 12 proven. 125 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2020-09-24 18:12:28,556 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1103153623] [2020-09-24 18:12:28,556 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:12:28,556 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-09-24 18:12:28,557 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431605075] [2020-09-24 18:12:28,558 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-09-24 18:12:28,558 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:12:28,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-09-24 18:12:28,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=497, Unknown=0, NotChecked=0, Total=552 [2020-09-24 18:12:28,560 INFO L87 Difference]: Start difference. First operand 55 states and 63 transitions. Second operand 24 states. [2020-09-24 18:12:29,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:12:29,997 INFO L93 Difference]: Finished difference Result 72 states and 81 transitions. [2020-09-24 18:12:29,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-09-24 18:12:29,998 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 96 [2020-09-24 18:12:29,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:12:29,999 INFO L225 Difference]: With dead ends: 72 [2020-09-24 18:12:29,999 INFO L226 Difference]: Without dead ends: 66 [2020-09-24 18:12:30,000 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 254 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=181, Invalid=1541, Unknown=0, NotChecked=0, Total=1722 [2020-09-24 18:12:30,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-09-24 18:12:30,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 60. [2020-09-24 18:12:30,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-09-24 18:12:30,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 70 transitions. [2020-09-24 18:12:30,006 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 70 transitions. Word has length 96 [2020-09-24 18:12:30,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:12:30,007 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 70 transitions. [2020-09-24 18:12:30,007 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-09-24 18:12:30,007 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 70 transitions. [2020-09-24 18:12:30,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-09-24 18:12:30,008 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:12:30,008 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 7, 7, 7, 7, 7, 7, 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] [2020-09-24 18:12:30,009 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-24 18:12:30,009 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:12:30,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:12:30,009 INFO L82 PathProgramCache]: Analyzing trace with hash -1979672437, now seen corresponding path program 9 times [2020-09-24 18:12:30,009 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:12:30,010 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [79524360] [2020-09-24 18:12:30,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:12:30,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:12:30,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:32,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:12:32,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-09-24 18:12:32,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:12:32,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1967 [2020-09-24 18:12:32,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:12:32,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 48 [2020-09-24 18:12:32,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 18:12:32,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-09-24 18:12:32,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:12:32,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:12:32,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:12:32,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:32,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:12:32,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:12:32,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:12:32,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 18:12:32,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:12:32,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:12:32,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:12:32,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:12:32,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:12:32,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 18:12:32,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:12:32,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:32,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:12:32,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-24 18:12:32,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:12:32,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-09-24 18:12:32,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:12:32,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-24 18:12:32,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:12:32,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-24 18:12:32,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:12:32,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 18:12:32,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:12:32,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:32,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:12:32,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:12:32,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:12:32,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-09-24 18:12:32,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:12:32,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 18:12:32,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:12:32,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-24 18:12:32,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:12:32,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 18:12:32,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:12:32,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:32,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:12:32,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 18:12:32,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:12:32,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-24 18:12:32,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:12:32,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 18:12:32,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:12:32,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 18:12:32,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:12:32,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-24 18:12:32,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:12:32,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:33,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:12:33,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-09-24 18:12:33,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:12:33,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1064 [2020-09-24 18:12:33,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:12:33,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-09-24 18:12:33,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:12:33,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-24 18:12:33,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:12:33,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 18:12:33,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:12:33,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:34,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:12:34,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-24 18:12:34,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:12:34,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 594 [2020-09-24 18:12:34,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:12:34,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-09-24 18:12:34,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:12:34,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-24 18:12:34,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:12:34,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 18:12:34,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:12:34,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:34,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:12:34,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-24 18:12:34,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:12:34,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 355 [2020-09-24 18:12:34,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:12:34,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-24 18:12:34,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:12:34,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-24 18:12:34,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:12:35,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 18:12:35,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:12:35,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:35,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:12:35,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-24 18:12:35,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:12:35,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 228 [2020-09-24 18:12:35,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:12:35,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-24 18:12:35,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:12:35,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-24 18:12:35,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:12:35,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 18:12:35,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:12:35,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:35,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:12:35,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:12:35,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:12:35,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-09-24 18:12:35,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:12:35,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 18:12:35,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:12:35,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-24 18:12:35,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:12:35,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 18:12:35,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:12:35,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:35,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:12:35,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 18:12:35,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:12:35,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-24 18:12:35,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:12:35,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 18:12:35,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:12:35,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 18:12:35,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:12:35,945 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 46 proven. 174 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2020-09-24 18:12:35,946 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [79524360] [2020-09-24 18:12:35,946 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:12:35,946 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-09-24 18:12:35,947 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532298889] [2020-09-24 18:12:35,947 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-09-24 18:12:35,948 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:12:35,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-09-24 18:12:35,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=694, Unknown=0, NotChecked=0, Total=756 [2020-09-24 18:12:35,950 INFO L87 Difference]: Start difference. First operand 60 states and 70 transitions. Second operand 28 states. [2020-09-24 18:12:37,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:12:37,726 INFO L93 Difference]: Finished difference Result 77 states and 88 transitions. [2020-09-24 18:12:37,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-09-24 18:12:37,727 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 106 [2020-09-24 18:12:37,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:12:37,728 INFO L225 Difference]: With dead ends: 77 [2020-09-24 18:12:37,728 INFO L226 Difference]: Without dead ends: 71 [2020-09-24 18:12:37,731 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 18 SyntacticMatches, 9 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 309 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=259, Invalid=2093, Unknown=0, NotChecked=0, Total=2352 [2020-09-24 18:12:37,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-09-24 18:12:37,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 65. [2020-09-24 18:12:37,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-09-24 18:12:37,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 77 transitions. [2020-09-24 18:12:37,752 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 77 transitions. Word has length 106 [2020-09-24 18:12:37,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:12:37,752 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 77 transitions. [2020-09-24 18:12:37,752 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-09-24 18:12:37,753 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 77 transitions. [2020-09-24 18:12:37,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-09-24 18:12:37,754 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:12:37,754 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 5, 5, 5, 5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:12:37,754 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-24 18:12:37,754 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:12:37,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:12:37,755 INFO L82 PathProgramCache]: Analyzing trace with hash -945819615, now seen corresponding path program 10 times [2020-09-24 18:12:37,755 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:12:37,756 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1413918907] [2020-09-24 18:12:37,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:12:37,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:12:37,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:38,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:12:38,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-09-24 18:12:38,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:12:38,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1102 [2020-09-24 18:12:38,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:12:38,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 38 [2020-09-24 18:12:38,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 18:12:38,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-24 18:12:38,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:12:38,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:12:38,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:12:38,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:38,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:12:38,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:12:38,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:12:38,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 18:12:38,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:12:38,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:12:38,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:12:38,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:12:38,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:12:38,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 18:12:38,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:12:38,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:39,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:12:39,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-24 18:12:39,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:12:39,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-09-24 18:12:39,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:12:39,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-24 18:12:39,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:12:39,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-24 18:12:39,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:12:39,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 18:12:39,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:12:39,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:39,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:12:39,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-24 18:12:39,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:12:39,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-09-24 18:12:39,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:12:39,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-24 18:12:39,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:12:39,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-24 18:12:39,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:12:39,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 18:12:39,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:12:39,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:39,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:12:39,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:12:39,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:12:39,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-09-24 18:12:39,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:12:39,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 18:12:39,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:12:39,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-24 18:12:39,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:12:39,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 18:12:39,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:12:39,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:39,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:12:39,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 18:12:39,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:12:39,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-24 18:12:39,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:12:39,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 18:12:39,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:12:39,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 18:12:39,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:12:39,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-09-24 18:12:39,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:12:39,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking...