/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/loop-invgen/fragtest_simple.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 18:30:04,937 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 18:30:04,942 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 18:30:04,987 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 18:30:04,988 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 18:30:04,995 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 18:30:04,998 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 18:30:05,002 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 18:30:05,004 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 18:30:05,008 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 18:30:05,009 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 18:30:05,010 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 18:30:05,010 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 18:30:05,014 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 18:30:05,017 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 18:30:05,019 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 18:30:05,021 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 18:30:05,022 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 18:30:05,024 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 18:30:05,033 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 18:30:05,036 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 18:30:05,038 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 18:30:05,039 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 18:30:05,040 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 18:30:05,054 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 18:30:05,057 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 18:30:05,057 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 18:30:05,058 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 18:30:05,062 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 18:30:05,063 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 18:30:05,063 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 18:30:05,064 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 18:30:05,065 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 18:30:05,068 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 18:30:05,069 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 18:30:05,069 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 18:30:05,073 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 18:30:05,073 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 18:30:05,073 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 18:30:05,074 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 18:30:05,075 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 18:30:05,076 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 18:30:05,101 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 18:30:05,101 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 18:30:05,103 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 18:30:05,103 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 18:30:05,103 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 18:30:05,103 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 18:30:05,103 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 18:30:05,104 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 18:30:05,104 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 18:30:05,104 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 18:30:05,104 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 18:30:05,104 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 18:30:05,105 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 18:30:05,105 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 18:30:05,105 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 18:30:05,105 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 18:30:05,105 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 18:30:05,106 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 18:30:05,106 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 18:30:05,106 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 18:30:05,106 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 18:30:05,106 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 18:30:05,107 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 18:30:05,107 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 18:30:05,107 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 18:30:05,107 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 18:30:05,107 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 18:30:05,108 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 18:30:05,108 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 18:30:05,108 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 18:30:05,613 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 18:30:05,636 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 18:30:05,640 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 18:30:05,643 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 18:30:05,644 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 18:30:05,645 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/fragtest_simple.i [2020-09-24 18:30:05,737 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3ce9436c9/a63a43fa99514b9a839d5c9b211eb5ed/FLAGce68598cb [2020-09-24 18:30:06,289 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 18:30:06,289 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-invgen/fragtest_simple.i [2020-09-24 18:30:06,298 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3ce9436c9/a63a43fa99514b9a839d5c9b211eb5ed/FLAGce68598cb [2020-09-24 18:30:06,634 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3ce9436c9/a63a43fa99514b9a839d5c9b211eb5ed [2020-09-24 18:30:06,647 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 18:30:06,653 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 18:30:06,654 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 18:30:06,655 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 18:30:06,660 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 18:30:06,662 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:30:06" (1/1) ... [2020-09-24 18:30:06,666 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72eb96f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:30:06, skipping insertion in model container [2020-09-24 18:30:06,666 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:30:06" (1/1) ... [2020-09-24 18:30:06,676 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 18:30:06,705 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 18:30:07,003 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:30:07,012 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 18:30:07,046 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:30:07,084 INFO L208 MainTranslator]: Completed translation [2020-09-24 18:30:07,086 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:30:07 WrapperNode [2020-09-24 18:30:07,087 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 18:30:07,088 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 18:30:07,088 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 18:30:07,088 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 18:30:07,108 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:30:07" (1/1) ... [2020-09-24 18:30:07,117 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:30:07" (1/1) ... [2020-09-24 18:30:07,127 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:30:07" (1/1) ... [2020-09-24 18:30:07,127 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:30:07" (1/1) ... [2020-09-24 18:30:07,220 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:30:07" (1/1) ... [2020-09-24 18:30:07,232 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:30:07" (1/1) ... [2020-09-24 18:30:07,235 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:30:07" (1/1) ... [2020-09-24 18:30:07,244 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 18:30:07,244 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 18:30:07,245 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 18:30:07,245 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 18:30:07,247 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:30:07" (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 18:30:07,331 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 18:30:07,331 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 18:30:07,332 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-24 18:30:07,332 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-24 18:30:07,332 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 18:30:07,332 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 18:30:07,333 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 18:30:07,333 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-24 18:30:07,333 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-24 18:30:07,333 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 18:30:07,333 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 18:30:07,334 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 18:30:07,334 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 18:30:07,677 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 18:30:07,677 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-09-24 18:30:07,683 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:30:07 BoogieIcfgContainer [2020-09-24 18:30:07,683 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 18:30:07,685 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 18:30:07,685 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 18:30:07,689 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 18:30:07,690 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 06:30:06" (1/3) ... [2020-09-24 18:30:07,691 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74983757 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:30:07, skipping insertion in model container [2020-09-24 18:30:07,691 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:30:07" (2/3) ... [2020-09-24 18:30:07,691 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74983757 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:30:07, skipping insertion in model container [2020-09-24 18:30:07,692 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:30:07" (3/3) ... [2020-09-24 18:30:07,694 INFO L109 eAbstractionObserver]: Analyzing ICFG fragtest_simple.i [2020-09-24 18:30:07,706 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 18:30:07,717 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 18:30:07,741 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 18:30:07,774 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 18:30:07,774 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 18:30:07,774 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 18:30:07,774 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 18:30:07,774 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 18:30:07,775 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 18:30:07,775 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 18:30:07,775 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 18:30:07,798 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states. [2020-09-24 18:30:07,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-24 18:30:07,807 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:30:07,808 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:30:07,809 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:30:07,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:30:07,817 INFO L82 PathProgramCache]: Analyzing trace with hash -815601615, now seen corresponding path program 1 times [2020-09-24 18:30:07,829 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:30:07,829 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [108662158] [2020-09-24 18:30:07,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:30:07,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:07,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:08,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:08,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:08,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:08,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 18:30:08,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 18:30:08,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-09-24 18:30:08,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:08,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:30:08,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 18:30:08,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:30:08,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 18:30:08,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:30:08,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:08,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:08,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:08,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:30:08,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:08,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 18:30:08,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:08,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:30:08,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:08,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:30:08,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:08,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:30:08,142 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [108662158] [2020-09-24 18:30:08,145 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:30:08,145 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-24 18:30:08,146 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552459613] [2020-09-24 18:30:08,153 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-09-24 18:30:08,154 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:30:08,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-09-24 18:30:08,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-24 18:30:08,176 INFO L87 Difference]: Start difference. First operand 47 states. Second operand 2 states. [2020-09-24 18:30:08,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:30:08,211 INFO L93 Difference]: Finished difference Result 76 states and 91 transitions. [2020-09-24 18:30:08,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-09-24 18:30:08,213 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 24 [2020-09-24 18:30:08,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:30:08,226 INFO L225 Difference]: With dead ends: 76 [2020-09-24 18:30:08,226 INFO L226 Difference]: Without dead ends: 42 [2020-09-24 18:30:08,231 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-24 18:30:08,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-24 18:30:08,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-09-24 18:30:08,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-24 18:30:08,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 45 transitions. [2020-09-24 18:30:08,286 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 45 transitions. Word has length 24 [2020-09-24 18:30:08,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:30:08,287 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 45 transitions. [2020-09-24 18:30:08,287 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-09-24 18:30:08,287 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 45 transitions. [2020-09-24 18:30:08,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-09-24 18:30:08,289 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:30:08,289 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:30:08,289 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 18:30:08,290 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:30:08,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:30:08,290 INFO L82 PathProgramCache]: Analyzing trace with hash -2089093357, now seen corresponding path program 1 times [2020-09-24 18:30:08,291 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:30:08,291 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2086325165] [2020-09-24 18:30:08,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:30:08,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:08,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:08,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:08,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-24 18:30:08,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:08,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-09-24 18:30:08,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:08,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:30:08,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 18:30:08,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-24 18:30:08,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:30:08,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:30:08,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:08,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:08,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:08,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:30:08,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:08,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 18:30:08,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:08,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:30:08,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:08,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:30:08,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:30:08,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:30:08,508 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2086325165] [2020-09-24 18:30:08,509 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:30:08,509 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 18:30:08,509 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124389439] [2020-09-24 18:30:08,511 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:30:08,512 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:30:08,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:30:08,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:30:08,513 INFO L87 Difference]: Start difference. First operand 42 states and 45 transitions. Second operand 5 states. [2020-09-24 18:30:08,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:30:08,578 INFO L93 Difference]: Finished difference Result 51 states and 54 transitions. [2020-09-24 18:30:08,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 18:30:08,579 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 28 [2020-09-24 18:30:08,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:30:08,581 INFO L225 Difference]: With dead ends: 51 [2020-09-24 18:30:08,581 INFO L226 Difference]: Without dead ends: 49 [2020-09-24 18:30:08,583 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 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 18:30:08,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-09-24 18:30:08,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 48. [2020-09-24 18:30:08,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-09-24 18:30:08,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 51 transitions. [2020-09-24 18:30:08,595 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 51 transitions. Word has length 28 [2020-09-24 18:30:08,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:30:08,596 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 51 transitions. [2020-09-24 18:30:08,596 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:30:08,596 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 51 transitions. [2020-09-24 18:30:08,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-24 18:30:08,599 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:30:08,601 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:30:08,601 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 18:30:08,602 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:30:08,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:30:08,602 INFO L82 PathProgramCache]: Analyzing trace with hash -594427423, now seen corresponding path program 1 times [2020-09-24 18:30:08,604 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:30:08,604 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [882200598] [2020-09-24 18:30:08,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:30:08,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:08,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:08,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:08,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-24 18:30:08,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:08,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 269 [2020-09-24 18:30:08,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:08,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 18:30:08,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-24 18:30:08,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 18:30:08,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:08,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:30:08,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:08,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:09,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:09,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:30:09,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:09,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 18:30:09,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:09,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:30:09,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:09,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:30:09,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:09,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-24 18:30:09,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:09,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:09,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:09,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:09,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:09,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-24 18:30:09,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:09,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:09,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:09,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:09,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:30:09,035 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:30:09,036 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [882200598] [2020-09-24 18:30:09,036 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:30:09,036 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 18:30:09,036 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176302772] [2020-09-24 18:30:09,037 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 18:30:09,037 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:30:09,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 18:30:09,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:30:09,038 INFO L87 Difference]: Start difference. First operand 48 states and 51 transitions. Second operand 6 states. [2020-09-24 18:30:09,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:30:09,162 INFO L93 Difference]: Finished difference Result 82 states and 89 transitions. [2020-09-24 18:30:09,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 18:30:09,162 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 38 [2020-09-24 18:30:09,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:30:09,167 INFO L225 Difference]: With dead ends: 82 [2020-09-24 18:30:09,168 INFO L226 Difference]: Without dead ends: 61 [2020-09-24 18:30:09,169 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:30:09,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-09-24 18:30:09,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 50. [2020-09-24 18:30:09,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-24 18:30:09,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 53 transitions. [2020-09-24 18:30:09,184 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 53 transitions. Word has length 38 [2020-09-24 18:30:09,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:30:09,185 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 53 transitions. [2020-09-24 18:30:09,185 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 18:30:09,185 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 53 transitions. [2020-09-24 18:30:09,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-09-24 18:30:09,187 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:30:09,187 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:30:09,187 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 18:30:09,188 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:30:09,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:30:09,188 INFO L82 PathProgramCache]: Analyzing trace with hash 1151378409, now seen corresponding path program 1 times [2020-09-24 18:30:09,188 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:30:09,189 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1122199705] [2020-09-24 18:30:09,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:30:09,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:09,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:09,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:09,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:09,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 18:30:09,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 18:30:09,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 593 [2020-09-24 18:30:09,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:09,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:30:09,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 18:30:09,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-24 18:30:09,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:30:09,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:30:09,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:09,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:09,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:09,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:30:09,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:09,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 18:30:09,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:09,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:30:09,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:09,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:30:09,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:30:09,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 18:30:09,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:09,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:09,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:09,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:09,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:09,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 18:30:09,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:09,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:09,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:09,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:09,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:09,904 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:30:09,905 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1122199705] [2020-09-24 18:30:09,905 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:30:09,906 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-24 18:30:09,906 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398068287] [2020-09-24 18:30:09,906 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 18:30:09,907 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:30:09,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 18:30:09,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:30:09,908 INFO L87 Difference]: Start difference. First operand 50 states and 53 transitions. Second operand 6 states. [2020-09-24 18:30:09,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:30:09,968 INFO L93 Difference]: Finished difference Result 67 states and 70 transitions. [2020-09-24 18:30:09,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:30:09,969 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 44 [2020-09-24 18:30:09,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:30:09,970 INFO L225 Difference]: With dead ends: 67 [2020-09-24 18:30:09,970 INFO L226 Difference]: Without dead ends: 65 [2020-09-24 18:30:09,971 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:30:09,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-09-24 18:30:09,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 60. [2020-09-24 18:30:09,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-09-24 18:30:09,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 63 transitions. [2020-09-24 18:30:09,980 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 63 transitions. Word has length 44 [2020-09-24 18:30:09,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:30:09,981 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 63 transitions. [2020-09-24 18:30:09,981 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 18:30:09,981 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 63 transitions. [2020-09-24 18:30:09,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-09-24 18:30:09,983 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:30:09,983 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:30:09,984 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 18:30:09,984 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:30:09,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:30:09,984 INFO L82 PathProgramCache]: Analyzing trace with hash 1388174135, now seen corresponding path program 2 times [2020-09-24 18:30:09,985 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:30:09,985 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [170174781] [2020-09-24 18:30:09,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:30:09,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:10,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:10,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:10,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:10,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-24 18:30:10,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 18:30:10,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 299 [2020-09-24 18:30:10,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:10,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:30:10,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-24 18:30:10,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 18:30:10,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:10,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:30:10,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:10,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:10,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:10,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:30:10,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:10,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 18:30:10,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:10,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:30:10,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:10,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:30:10,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:30:10,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 18:30:10,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:10,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:10,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:10,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:10,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:10,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 18:30:10,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:10,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:10,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:10,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:10,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:10,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-24 18:30:10,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:10,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:10,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:10,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:10,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:10,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 18:30:10,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:10,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:30:10,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 18:30:10,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:30:10,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:10,394 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-24 18:30:10,394 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [170174781] [2020-09-24 18:30:10,394 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:30:10,395 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 18:30:10,395 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67629785] [2020-09-24 18:30:10,395 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 18:30:10,396 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:30:10,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 18:30:10,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:30:10,397 INFO L87 Difference]: Start difference. First operand 60 states and 63 transitions. Second operand 7 states. [2020-09-24 18:30:10,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:30:10,583 INFO L93 Difference]: Finished difference Result 112 states and 121 transitions. [2020-09-24 18:30:10,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 18:30:10,584 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 54 [2020-09-24 18:30:10,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:30:10,586 INFO L225 Difference]: With dead ends: 112 [2020-09-24 18:30:10,586 INFO L226 Difference]: Without dead ends: 85 [2020-09-24 18:30:10,587 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2020-09-24 18:30:10,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-09-24 18:30:10,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 66. [2020-09-24 18:30:10,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-09-24 18:30:10,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 69 transitions. [2020-09-24 18:30:10,597 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 69 transitions. Word has length 54 [2020-09-24 18:30:10,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:30:10,597 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 69 transitions. [2020-09-24 18:30:10,597 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 18:30:10,598 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 69 transitions. [2020-09-24 18:30:10,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-09-24 18:30:10,599 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:30:10,599 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:30:10,599 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 18:30:10,600 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:30:10,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:30:10,600 INFO L82 PathProgramCache]: Analyzing trace with hash 1511501119, now seen corresponding path program 3 times [2020-09-24 18:30:10,600 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:30:10,601 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1851270157] [2020-09-24 18:30:10,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:30:10,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:10,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:10,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:11,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:11,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-09-24 18:30:11,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 18:30:11,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 897 [2020-09-24 18:30:11,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:11,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 18:30:11,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 18:30:11,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-24 18:30:11,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:30:11,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:30:11,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:11,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:11,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:11,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:30:11,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:11,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 18:30:11,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:11,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:30:11,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:11,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:30:11,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:30:11,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-24 18:30:11,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:11,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:11,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:11,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:11,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:11,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 18:30:11,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:11,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:11,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:11,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:11,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:30:11,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-24 18:30:11,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:11,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:11,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:11,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:11,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:11,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 18:30:11,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:11,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:11,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:11,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:11,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:30:11,627 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 14 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-24 18:30:11,627 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1851270157] [2020-09-24 18:30:11,628 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:30:11,628 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 18:30:11,628 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950823250] [2020-09-24 18:30:11,629 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 18:30:11,629 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:30:11,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 18:30:11,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:30:11,630 INFO L87 Difference]: Start difference. First operand 66 states and 69 transitions. Second operand 7 states. [2020-09-24 18:30:11,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:30:11,691 INFO L93 Difference]: Finished difference Result 83 states and 86 transitions. [2020-09-24 18:30:11,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 18:30:11,692 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 60 [2020-09-24 18:30:11,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:30:11,693 INFO L225 Difference]: With dead ends: 83 [2020-09-24 18:30:11,693 INFO L226 Difference]: Without dead ends: 81 [2020-09-24 18:30:11,694 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-09-24 18:30:11,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-09-24 18:30:11,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 76. [2020-09-24 18:30:11,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-09-24 18:30:11,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 79 transitions. [2020-09-24 18:30:11,703 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 79 transitions. Word has length 60 [2020-09-24 18:30:11,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:30:11,704 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 79 transitions. [2020-09-24 18:30:11,704 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 18:30:11,704 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 79 transitions. [2020-09-24 18:30:11,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-09-24 18:30:11,706 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:30:11,706 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:30:11,706 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 18:30:11,706 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:30:11,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:30:11,707 INFO L82 PathProgramCache]: Analyzing trace with hash 1318170893, now seen corresponding path program 4 times [2020-09-24 18:30:11,707 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:30:11,707 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1771141191] [2020-09-24 18:30:11,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:30:11,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:11,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:11,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:12,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:12,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 18:30:12,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 18:30:12,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 553 [2020-09-24 18:30:12,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:12,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 18:30:12,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-24 18:30:12,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 18:30:12,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:12,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:30:12,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:12,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:12,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:12,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:30:12,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:12,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 18:30:12,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:12,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:30:12,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:12,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:30:12,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:30:12,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-24 18:30:12,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:12,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:12,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:12,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:12,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:12,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-24 18:30:12,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:12,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:12,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:12,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:12,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:12,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-24 18:30:12,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:12,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:12,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:12,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:12,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:12,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 18:30:12,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:12,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:12,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:12,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:12,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:30:12,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-09-24 18:30:12,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:12,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:12,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:12,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:12,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:12,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 18:30:12,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:12,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:30:12,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 18:30:12,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:30:12,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:12,440 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 28 proven. 10 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-09-24 18:30:12,440 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1771141191] [2020-09-24 18:30:12,441 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:30:12,441 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 18:30:12,442 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895335286] [2020-09-24 18:30:12,443 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 18:30:12,444 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:30:12,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 18:30:12,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-24 18:30:12,444 INFO L87 Difference]: Start difference. First operand 76 states and 79 transitions. Second operand 9 states. [2020-09-24 18:30:12,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:30:12,727 INFO L93 Difference]: Finished difference Result 142 states and 154 transitions. [2020-09-24 18:30:12,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 18:30:12,728 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 70 [2020-09-24 18:30:12,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:30:12,731 INFO L225 Difference]: With dead ends: 142 [2020-09-24 18:30:12,732 INFO L226 Difference]: Without dead ends: 109 [2020-09-24 18:30:12,733 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=135, Unknown=0, NotChecked=0, Total=210 [2020-09-24 18:30:12,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-09-24 18:30:12,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 82. [2020-09-24 18:30:12,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-09-24 18:30:12,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 85 transitions. [2020-09-24 18:30:12,743 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 85 transitions. Word has length 70 [2020-09-24 18:30:12,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:30:12,744 INFO L479 AbstractCegarLoop]: Abstraction has 82 states and 85 transitions. [2020-09-24 18:30:12,744 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 18:30:12,744 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 85 transitions. [2020-09-24 18:30:12,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-09-24 18:30:12,746 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:30:12,746 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:30:12,747 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 18:30:12,747 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:30:12,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:30:12,748 INFO L82 PathProgramCache]: Analyzing trace with hash 1633055509, now seen corresponding path program 5 times [2020-09-24 18:30:12,748 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:30:12,748 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [876182705] [2020-09-24 18:30:12,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:30:12,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:12,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:12,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:14,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:14,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-09-24 18:30:14,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 18:30:14,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1727 [2020-09-24 18:30:14,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:14,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 18:30:14,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-24 18:30:14,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-24 18:30:14,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:14,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:30:14,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:14,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:14,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:14,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:30:14,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:14,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 18:30:14,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:14,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:30:14,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:14,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:30:14,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:14,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-09-24 18:30:14,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:14,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:14,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:14,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:14,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:14,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 18:30:14,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:14,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:14,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:14,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:14,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:14,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-24 18:30:14,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:14,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:14,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:14,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:14,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:14,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 18:30:14,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:14,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:14,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:14,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:14,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:14,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-09-24 18:30:14,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:14,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:14,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:14,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:14,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:14,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 18:30:14,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:14,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:14,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:14,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:14,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:14,652 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 30 proven. 24 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-24 18:30:14,652 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [876182705] [2020-09-24 18:30:14,652 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:30:14,652 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-24 18:30:14,653 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207538145] [2020-09-24 18:30:14,653 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 18:30:14,654 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:30:14,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 18:30:14,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-09-24 18:30:14,654 INFO L87 Difference]: Start difference. First operand 82 states and 85 transitions. Second operand 11 states. [2020-09-24 18:30:15,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:30:15,026 INFO L93 Difference]: Finished difference Result 156 states and 171 transitions. [2020-09-24 18:30:15,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-24 18:30:15,027 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 76 [2020-09-24 18:30:15,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:30:15,029 INFO L225 Difference]: With dead ends: 156 [2020-09-24 18:30:15,029 INFO L226 Difference]: Without dead ends: 123 [2020-09-24 18:30:15,030 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=119, Invalid=223, Unknown=0, NotChecked=0, Total=342 [2020-09-24 18:30:15,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-09-24 18:30:15,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 88. [2020-09-24 18:30:15,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-09-24 18:30:15,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 91 transitions. [2020-09-24 18:30:15,039 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 91 transitions. Word has length 76 [2020-09-24 18:30:15,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:30:15,040 INFO L479 AbstractCegarLoop]: Abstraction has 88 states and 91 transitions. [2020-09-24 18:30:15,040 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 18:30:15,040 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 91 transitions. [2020-09-24 18:30:15,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-09-24 18:30:15,042 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:30:15,043 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:30:15,043 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 18:30:15,043 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:30:15,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:30:15,044 INFO L82 PathProgramCache]: Analyzing trace with hash 1899204381, now seen corresponding path program 6 times [2020-09-24 18:30:15,044 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:30:15,044 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1283803299] [2020-09-24 18:30:15,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:30:15,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:15,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:15,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:15,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-09-24 18:30:15,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:15,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 340 [2020-09-24 18:30:15,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:15,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 18:30:15,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 18:30:15,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-09-24 18:30:15,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:15,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:30:15,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:15,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:15,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:15,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:30:15,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:15,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 18:30:15,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:15,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:30:15,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:15,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:30:15,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:15,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-09-24 18:30:15,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:15,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:15,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:15,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:15,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:15,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 18:30:15,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:15,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:15,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:15,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:15,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:15,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-24 18:30:15,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:15,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:15,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:15,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:15,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:15,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 18:30:15,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:15,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:15,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:15,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:15,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:15,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-09-24 18:30:15,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:15,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:15,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:15,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:15,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:15,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 18:30:15,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:15,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:15,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:15,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:15,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:15,528 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 50 proven. 24 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-24 18:30:15,529 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1283803299] [2020-09-24 18:30:15,529 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:30:15,529 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 18:30:15,530 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051905373] [2020-09-24 18:30:15,530 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 18:30:15,531 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:30:15,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 18:30:15,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-09-24 18:30:15,531 INFO L87 Difference]: Start difference. First operand 88 states and 91 transitions. Second operand 9 states. [2020-09-24 18:30:15,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:30:15,610 INFO L93 Difference]: Finished difference Result 111 states and 115 transitions. [2020-09-24 18:30:15,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-24 18:30:15,610 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 82 [2020-09-24 18:30:15,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:30:15,612 INFO L225 Difference]: With dead ends: 111 [2020-09-24 18:30:15,612 INFO L226 Difference]: Without dead ends: 109 [2020-09-24 18:30:15,612 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-09-24 18:30:15,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-09-24 18:30:15,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 104. [2020-09-24 18:30:15,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-09-24 18:30:15,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 108 transitions. [2020-09-24 18:30:15,621 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 108 transitions. Word has length 82 [2020-09-24 18:30:15,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:30:15,621 INFO L479 AbstractCegarLoop]: Abstraction has 104 states and 108 transitions. [2020-09-24 18:30:15,621 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 18:30:15,622 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 108 transitions. [2020-09-24 18:30:15,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-09-24 18:30:15,624 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:30:15,624 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 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 18:30:15,624 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 18:30:15,625 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:30:15,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:30:15,625 INFO L82 PathProgramCache]: Analyzing trace with hash -927854023, now seen corresponding path program 7 times [2020-09-24 18:30:15,625 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:30:15,626 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1505806760] [2020-09-24 18:30:15,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:30:15,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:15,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:15,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:16,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:16,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-09-24 18:30:16,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 18:30:16,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1108 [2020-09-24 18:30:16,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:16,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 18:30:16,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-24 18:30:16,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-24 18:30:16,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:16,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:30:16,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:16,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:16,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:16,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:30:16,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:16,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 18:30:16,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:16,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:30:16,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:16,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:30:16,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:16,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-09-24 18:30:16,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:16,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:16,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:16,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:16,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:16,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 18:30:16,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:16,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:16,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:16,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:16,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:16,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-24 18:30:16,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:16,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:16,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:16,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:16,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:16,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 18:30:16,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:16,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:16,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:16,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:16,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:16,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-09-24 18:30:16,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:16,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:16,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:16,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:16,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:16,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 18:30:16,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:16,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:16,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:16,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:16,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:16,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-09-24 18:30:16,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:16,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:16,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:16,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:16,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:16,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 18:30:16,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:16,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:16,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:16,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:16,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:30:16,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-24 18:30:16,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:16,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:16,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:16,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:16,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:16,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 18:30:16,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:16,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:30:16,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 18:30:16,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:30:16,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:16,958 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 78 proven. 44 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2020-09-24 18:30:16,958 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1505806760] [2020-09-24 18:30:16,958 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:30:16,959 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-24 18:30:16,959 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507531928] [2020-09-24 18:30:16,960 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-24 18:30:16,960 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:30:16,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-24 18:30:16,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2020-09-24 18:30:16,961 INFO L87 Difference]: Start difference. First operand 104 states and 108 transitions. Second operand 13 states. [2020-09-24 18:30:17,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:30:17,295 INFO L93 Difference]: Finished difference Result 198 states and 217 transitions. [2020-09-24 18:30:17,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-24 18:30:17,295 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 102 [2020-09-24 18:30:17,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:30:17,297 INFO L225 Difference]: With dead ends: 198 [2020-09-24 18:30:17,297 INFO L226 Difference]: Without dead ends: 153 [2020-09-24 18:30:17,298 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=173, Invalid=333, Unknown=0, NotChecked=0, Total=506 [2020-09-24 18:30:17,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-09-24 18:30:17,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 110. [2020-09-24 18:30:17,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-09-24 18:30:17,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 114 transitions. [2020-09-24 18:30:17,307 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 114 transitions. Word has length 102 [2020-09-24 18:30:17,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:30:17,307 INFO L479 AbstractCegarLoop]: Abstraction has 110 states and 114 transitions. [2020-09-24 18:30:17,307 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-24 18:30:17,307 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 114 transitions. [2020-09-24 18:30:17,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-09-24 18:30:17,308 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:30:17,309 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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 18:30:17,309 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-24 18:30:17,309 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:30:17,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:30:17,309 INFO L82 PathProgramCache]: Analyzing trace with hash 917288001, now seen corresponding path program 8 times [2020-09-24 18:30:17,310 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:30:17,310 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1689672765] [2020-09-24 18:30:17,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:30:17,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:17,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:17,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:21,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:21,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-09-24 18:30:21,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 18:30:21,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4104 [2020-09-24 18:30:21,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:21,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-24 18:30:21,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 18:30:21,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-09-24 18:30:21,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:30:21,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:30:21,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:21,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:21,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:21,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:30:21,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:21,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 18:30:21,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:21,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:30:21,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:21,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:30:21,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:30:21,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-09-24 18:30:21,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:21,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:21,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:21,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:21,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:21,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 18:30:21,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:21,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:21,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:21,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:21,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:30:21,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-09-24 18:30:21,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:21,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:21,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:21,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:21,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:21,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 18:30:21,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:21,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:21,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:21,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:21,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:30:21,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-09-24 18:30:21,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:21,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:21,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:21,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:21,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:21,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 18:30:21,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:21,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:21,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:21,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:21,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:30:21,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-24 18:30:21,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:21,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:21,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:21,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:21,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:21,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 18:30:21,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:21,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:21,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:21,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:21,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:30:21,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-09-24 18:30:21,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:21,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:21,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:21,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:21,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:21,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 18:30:21,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:21,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:21,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:21,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:21,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:30:21,652 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 80 proven. 70 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-09-24 18:30:21,653 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1689672765] [2020-09-24 18:30:21,653 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:30:21,653 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-24 18:30:21,654 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756623612] [2020-09-24 18:30:21,654 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 18:30:21,655 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:30:21,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 18:30:21,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-09-24 18:30:21,656 INFO L87 Difference]: Start difference. First operand 110 states and 114 transitions. Second operand 10 states. [2020-09-24 18:30:21,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:30:21,773 INFO L93 Difference]: Finished difference Result 127 states and 131 transitions. [2020-09-24 18:30:21,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 18:30:21,774 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 108 [2020-09-24 18:30:21,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:30:21,776 INFO L225 Difference]: With dead ends: 127 [2020-09-24 18:30:21,776 INFO L226 Difference]: Without dead ends: 125 [2020-09-24 18:30:21,777 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-09-24 18:30:21,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-09-24 18:30:21,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 120. [2020-09-24 18:30:21,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-09-24 18:30:21,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 124 transitions. [2020-09-24 18:30:21,787 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 124 transitions. Word has length 108 [2020-09-24 18:30:21,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:30:21,788 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 124 transitions. [2020-09-24 18:30:21,788 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-24 18:30:21,788 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 124 transitions. [2020-09-24 18:30:21,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-09-24 18:30:21,790 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:30:21,791 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 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 18:30:21,791 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-24 18:30:21,792 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:30:21,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:30:21,792 INFO L82 PathProgramCache]: Analyzing trace with hash -1617732209, now seen corresponding path program 9 times [2020-09-24 18:30:21,793 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:30:21,793 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1148015096] [2020-09-24 18:30:21,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:30:21,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:21,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:22,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:22,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:22,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-09-24 18:30:22,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 18:30:22,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 786 [2020-09-24 18:30:22,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:22,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-24 18:30:22,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-24 18:30:22,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-24 18:30:22,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:22,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:30:22,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:22,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:22,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:22,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:30:22,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:22,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 18:30:22,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:22,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:30:22,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:22,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:30:22,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:22,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-09-24 18:30:22,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:22,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:22,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:22,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:22,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:22,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 18:30:22,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:22,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:22,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:22,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:22,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:22,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-09-24 18:30:22,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:22,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:22,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:22,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:22,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:22,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 18:30:22,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:22,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:22,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:22,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:22,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:22,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-09-24 18:30:22,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:22,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:22,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:22,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:22,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:22,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 18:30:22,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:22,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:22,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:22,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:22,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:22,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-24 18:30:22,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:22,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:22,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:22,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:22,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:22,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 18:30:22,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:22,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:22,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:22,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:22,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:22,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-09-24 18:30:22,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:22,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:22,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:22,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:22,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:22,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 18:30:22,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:22,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:22,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:22,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:22,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:22,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-24 18:30:22,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:22,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:22,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:22,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:22,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:22,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 18:30:22,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:22,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:30:22,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 18:30:22,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:30:22,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:22,833 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 112 proven. 70 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2020-09-24 18:30:22,833 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1148015096] [2020-09-24 18:30:22,834 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:30:22,834 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-24 18:30:22,834 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252772920] [2020-09-24 18:30:22,835 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-24 18:30:22,835 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:30:22,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-24 18:30:22,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2020-09-24 18:30:22,836 INFO L87 Difference]: Start difference. First operand 120 states and 124 transitions. Second operand 15 states. [2020-09-24 18:30:23,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:30:23,229 INFO L93 Difference]: Finished difference Result 228 states and 250 transitions. [2020-09-24 18:30:23,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-24 18:30:23,229 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 118 [2020-09-24 18:30:23,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:30:23,231 INFO L225 Difference]: With dead ends: 228 [2020-09-24 18:30:23,231 INFO L226 Difference]: Without dead ends: 177 [2020-09-24 18:30:23,233 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=237, Invalid=465, Unknown=0, NotChecked=0, Total=702 [2020-09-24 18:30:23,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2020-09-24 18:30:23,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 126. [2020-09-24 18:30:23,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-09-24 18:30:23,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 130 transitions. [2020-09-24 18:30:23,242 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 130 transitions. Word has length 118 [2020-09-24 18:30:23,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:30:23,242 INFO L479 AbstractCegarLoop]: Abstraction has 126 states and 130 transitions. [2020-09-24 18:30:23,243 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-24 18:30:23,243 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 130 transitions. [2020-09-24 18:30:23,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-09-24 18:30:23,247 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:30:23,247 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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 18:30:23,247 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-24 18:30:23,248 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:30:23,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:30:23,248 INFO L82 PathProgramCache]: Analyzing trace with hash -581374057, now seen corresponding path program 10 times [2020-09-24 18:30:23,248 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:30:23,249 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1404137627] [2020-09-24 18:30:23,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:30:23,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:23,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:23,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:28,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:28,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-09-24 18:30:28,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 18:30:28,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-09-24 18:30:28,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:28,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-24 18:30:28,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-24 18:30:28,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-09-24 18:30:28,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:28,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:30:28,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:28,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:28,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:28,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:30:28,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:28,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 18:30:28,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:28,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:30:28,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:28,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:30:28,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:28,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-09-24 18:30:28,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:28,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:28,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:28,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:28,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:28,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 18:30:28,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:28,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:28,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:28,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:28,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:30:28,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-24 18:30:28,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:28,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:28,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:28,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:28,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:28,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 18:30:28,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:28,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:28,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:28,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:28,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:28,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-09-24 18:30:28,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:28,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:28,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:28,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:28,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:28,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 18:30:28,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:28,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:28,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:28,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:28,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:30:28,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-24 18:30:28,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:28,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:28,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:28,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:28,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:28,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 18:30:28,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:28,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:28,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:28,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:28,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:28,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-24 18:30:28,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:28,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:28,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:28,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:28,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:28,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 18:30:28,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:28,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:28,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:28,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:28,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:30:28,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-24 18:30:28,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:28,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:28,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:28,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:28,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:28,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 18:30:28,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:28,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:28,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:28,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:28,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:28,637 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 114 proven. 102 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-09-24 18:30:28,637 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1404137627] [2020-09-24 18:30:28,638 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:30:28,638 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-24 18:30:28,638 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314412756] [2020-09-24 18:30:28,639 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-24 18:30:28,639 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:30:28,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-24 18:30:28,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2020-09-24 18:30:28,640 INFO L87 Difference]: Start difference. First operand 126 states and 130 transitions. Second operand 17 states. [2020-09-24 18:30:29,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:30:29,210 INFO L93 Difference]: Finished difference Result 242 states and 267 transitions. [2020-09-24 18:30:29,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-09-24 18:30:29,211 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 124 [2020-09-24 18:30:29,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:30:29,214 INFO L225 Difference]: With dead ends: 242 [2020-09-24 18:30:29,214 INFO L226 Difference]: Without dead ends: 191 [2020-09-24 18:30:29,216 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=311, Invalid=619, Unknown=0, NotChecked=0, Total=930 [2020-09-24 18:30:29,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2020-09-24 18:30:29,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 132. [2020-09-24 18:30:29,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-09-24 18:30:29,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 136 transitions. [2020-09-24 18:30:29,232 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 136 transitions. Word has length 124 [2020-09-24 18:30:29,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:30:29,232 INFO L479 AbstractCegarLoop]: Abstraction has 132 states and 136 transitions. [2020-09-24 18:30:29,233 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-24 18:30:29,233 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 136 transitions. [2020-09-24 18:30:29,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-09-24 18:30:29,235 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:30:29,236 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 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 18:30:29,236 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-24 18:30:29,236 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:30:29,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:30:29,237 INFO L82 PathProgramCache]: Analyzing trace with hash -396698721, now seen corresponding path program 11 times [2020-09-24 18:30:29,237 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:30:29,238 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [187313355] [2020-09-24 18:30:29,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:30:29,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:29,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:30,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:30,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-09-24 18:30:30,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:30,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 751 [2020-09-24 18:30:30,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:30,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-24 18:30:30,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 18:30:30,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-09-24 18:30:30,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:30,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:30:30,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:30,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:30,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:30,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:30:30,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:30,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 18:30:30,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:30,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:30:30,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:30,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:30:30,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:30,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-09-24 18:30:30,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:30,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:30,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:30,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:30,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:30,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 18:30:30,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:30,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:30,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:30,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:30,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:30,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-09-24 18:30:30,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:30,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:30,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:30,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:30,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:30,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 18:30:30,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:30,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:30,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:30,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:30,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:30,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 18:30:30,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:30,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:30,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:30,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:30,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:30,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 18:30:30,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:30,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:30,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:30,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:30,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:30:30,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-09-24 18:30:30,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:30,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:30,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:30,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:30,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:30,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 18:30:30,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:30,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:30,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:30,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:30,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:30,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-09-24 18:30:30,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:30,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:30,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:30,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:30,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:30,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 18:30:30,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:30,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:30,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:30,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:30,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:30:30,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-09-24 18:30:30,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:30,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:30,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:30,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:30,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:30,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 18:30:30,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:30,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:30,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:30,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:30,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:30:30,247 INFO L134 CoverageAnalysis]: Checked inductivity of 314 backedges. 152 proven. 102 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-09-24 18:30:30,247 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [187313355] [2020-09-24 18:30:30,248 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:30:30,248 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-24 18:30:30,248 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473400979] [2020-09-24 18:30:30,249 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-24 18:30:30,249 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:30:30,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-24 18:30:30,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2020-09-24 18:30:30,250 INFO L87 Difference]: Start difference. First operand 132 states and 136 transitions. Second operand 12 states. [2020-09-24 18:30:30,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:30:30,362 INFO L93 Difference]: Finished difference Result 155 states and 160 transitions. [2020-09-24 18:30:30,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-24 18:30:30,363 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 130 [2020-09-24 18:30:30,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:30:30,364 INFO L225 Difference]: With dead ends: 155 [2020-09-24 18:30:30,364 INFO L226 Difference]: Without dead ends: 153 [2020-09-24 18:30:30,365 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2020-09-24 18:30:30,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-09-24 18:30:30,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 148. [2020-09-24 18:30:30,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2020-09-24 18:30:30,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 153 transitions. [2020-09-24 18:30:30,372 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 153 transitions. Word has length 130 [2020-09-24 18:30:30,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:30:30,373 INFO L479 AbstractCegarLoop]: Abstraction has 148 states and 153 transitions. [2020-09-24 18:30:30,373 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-24 18:30:30,373 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 153 transitions. [2020-09-24 18:30:30,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-09-24 18:30:30,375 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:30:30,375 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 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 18:30:30,375 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-24 18:30:30,375 INFO L427 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:30:30,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:30:30,376 INFO L82 PathProgramCache]: Analyzing trace with hash -186119749, now seen corresponding path program 12 times [2020-09-24 18:30:30,376 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:30:30,376 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [205005313] [2020-09-24 18:30:30,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:30:30,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:30,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:30,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:32,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:32,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-09-24 18:30:32,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 18:30:32,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2410 [2020-09-24 18:30:32,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:32,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-24 18:30:32,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-24 18:30:32,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-09-24 18:30:32,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:33,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:30:33,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:33,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:33,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:33,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:30:33,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:33,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 18:30:33,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:33,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:30:33,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:33,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:30:33,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:33,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-09-24 18:30:33,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:33,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:33,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:33,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:33,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:33,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 18:30:33,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:33,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:33,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:33,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:33,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:33,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-09-24 18:30:33,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:33,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:33,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:33,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:33,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:33,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 18:30:33,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:33,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:33,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:33,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:33,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:33,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 18:30:33,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:33,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:33,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:33,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:33,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:33,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 18:30:33,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:33,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:33,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:33,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:33,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:33,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-09-24 18:30:33,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:33,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:33,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:33,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:33,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:33,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 18:30:33,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:33,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:33,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:33,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:33,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:33,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-09-24 18:30:33,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:33,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:33,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:33,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:33,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:33,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 18:30:33,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:33,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:33,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:33,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:33,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:33,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-09-24 18:30:33,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:33,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:33,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:33,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:33,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:33,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 18:30:33,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:33,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:33,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:33,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:33,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:33,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-09-24 18:30:33,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:33,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:33,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:33,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:33,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:33,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 18:30:33,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:33,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:33,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:33,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:33,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:33,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-09-24 18:30:33,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:33,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:33,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:33,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:33,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:33,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 18:30:33,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:33,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:30:33,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 18:30:33,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:30:33,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:33,122 INFO L134 CoverageAnalysis]: Checked inductivity of 452 backedges. 198 proven. 140 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2020-09-24 18:30:33,123 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [205005313] [2020-09-24 18:30:33,123 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:30:33,123 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-09-24 18:30:33,123 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583040028] [2020-09-24 18:30:33,124 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-24 18:30:33,124 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:30:33,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-24 18:30:33,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=251, Unknown=0, NotChecked=0, Total=342 [2020-09-24 18:30:33,125 INFO L87 Difference]: Start difference. First operand 148 states and 153 transitions. Second operand 19 states. [2020-09-24 18:30:33,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:30:33,878 INFO L93 Difference]: Finished difference Result 284 states and 313 transitions. [2020-09-24 18:30:33,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-09-24 18:30:33,878 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 150 [2020-09-24 18:30:33,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:30:33,880 INFO L225 Difference]: With dead ends: 284 [2020-09-24 18:30:33,880 INFO L226 Difference]: Without dead ends: 221 [2020-09-24 18:30:33,881 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=395, Invalid=795, Unknown=0, NotChecked=0, Total=1190 [2020-09-24 18:30:33,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2020-09-24 18:30:33,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 154. [2020-09-24 18:30:33,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-09-24 18:30:33,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 159 transitions. [2020-09-24 18:30:33,889 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 159 transitions. Word has length 150 [2020-09-24 18:30:33,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:30:33,889 INFO L479 AbstractCegarLoop]: Abstraction has 154 states and 159 transitions. [2020-09-24 18:30:33,889 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-09-24 18:30:33,889 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 159 transitions. [2020-09-24 18:30:33,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-09-24 18:30:33,891 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:30:33,891 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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 18:30:33,891 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-24 18:30:33,892 INFO L427 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:30:33,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:30:33,892 INFO L82 PathProgramCache]: Analyzing trace with hash -693929021, now seen corresponding path program 13 times [2020-09-24 18:30:33,892 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:30:33,893 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2057825703] [2020-09-24 18:30:33,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:30:33,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:33,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:34,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:38,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:38,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-09-24 18:30:38,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 18:30:38,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-24 18:30:38,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:38,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-24 18:30:38,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 18:30:38,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 166 [2020-09-24 18:30:38,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:39,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:30:39,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:39,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:39,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:39,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:30:39,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:39,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 18:30:39,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:39,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:30:39,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:39,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:30:39,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:39,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-09-24 18:30:39,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:39,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:39,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:39,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:39,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:39,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 18:30:39,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:39,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:39,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:39,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:39,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:39,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-09-24 18:30:39,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:39,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:39,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:39,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:39,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:39,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 18:30:39,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:39,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:39,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:39,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:39,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:39,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-09-24 18:30:39,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:39,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:39,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:39,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:39,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:39,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 18:30:39,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:39,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:39,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:39,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:39,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:39,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-09-24 18:30:39,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:39,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:39,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:39,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:39,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:39,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 18:30:39,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:39,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:39,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:39,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:39,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:39,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-09-24 18:30:39,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:39,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:39,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:39,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:39,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:39,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 18:30:39,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:39,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:39,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:39,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:39,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:39,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-09-24 18:30:39,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:39,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:39,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:39,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:39,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:39,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 18:30:39,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:39,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:39,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:39,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:39,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:39,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-09-24 18:30:39,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:39,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:39,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:39,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:39,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:39,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 18:30:39,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:39,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:39,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:39,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:39,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:39,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-09-24 18:30:39,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:39,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:39,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:39,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:39,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:39,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 18:30:39,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:39,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:39,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:39,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:39,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:39,176 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 200 proven. 184 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2020-09-24 18:30:39,177 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2057825703] [2020-09-24 18:30:39,177 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:30:39,177 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-24 18:30:39,177 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783941180] [2020-09-24 18:30:39,178 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-24 18:30:39,178 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:30:39,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-24 18:30:39,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2020-09-24 18:30:39,179 INFO L87 Difference]: Start difference. First operand 154 states and 159 transitions. Second operand 13 states. [2020-09-24 18:30:39,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:30:39,284 INFO L93 Difference]: Finished difference Result 171 states and 176 transitions. [2020-09-24 18:30:39,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-24 18:30:39,284 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 156 [2020-09-24 18:30:39,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:30:39,286 INFO L225 Difference]: With dead ends: 171 [2020-09-24 18:30:39,286 INFO L226 Difference]: Without dead ends: 169 [2020-09-24 18:30:39,286 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2020-09-24 18:30:39,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2020-09-24 18:30:39,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 164. [2020-09-24 18:30:39,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-09-24 18:30:39,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 169 transitions. [2020-09-24 18:30:39,294 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 169 transitions. Word has length 156 [2020-09-24 18:30:39,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:30:39,294 INFO L479 AbstractCegarLoop]: Abstraction has 164 states and 169 transitions. [2020-09-24 18:30:39,294 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-24 18:30:39,294 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 169 transitions. [2020-09-24 18:30:39,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-09-24 18:30:39,296 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:30:39,296 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 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 18:30:39,297 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-09-24 18:30:39,297 INFO L427 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:30:39,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:30:39,297 INFO L82 PathProgramCache]: Analyzing trace with hash -1491064175, now seen corresponding path program 14 times [2020-09-24 18:30:39,298 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:30:39,298 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1831527820] [2020-09-24 18:30:39,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:30:39,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:39,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:40,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:40,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:40,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 193 [2020-09-24 18:30:40,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 18:30:40,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1663 [2020-09-24 18:30:40,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:40,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-24 18:30:40,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-24 18:30:40,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 150 [2020-09-24 18:30:40,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:41,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:30:41,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:41,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:41,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:41,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:30:41,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:41,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 18:30:41,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:41,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:30:41,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:41,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:30:41,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:41,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-09-24 18:30:41,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:41,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:41,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:41,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:41,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:41,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 18:30:41,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:41,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:41,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:41,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:41,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:41,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-09-24 18:30:41,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:41,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:41,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:41,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:41,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:41,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 18:30:41,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:41,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:41,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:41,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:41,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:41,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-09-24 18:30:41,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:41,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:41,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:41,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:41,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:41,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 18:30:41,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:41,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:41,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:41,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:41,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:41,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-09-24 18:30:41,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:41,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:41,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:41,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:41,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:41,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 18:30:41,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:41,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:41,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:41,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:41,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:41,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-09-24 18:30:41,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:41,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:41,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:41,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:41,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:41,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 18:30:41,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:41,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:41,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:41,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:41,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:41,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-09-24 18:30:41,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:41,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:41,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:41,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:41,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:41,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 18:30:41,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:41,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:41,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:41,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:41,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:41,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-09-24 18:30:41,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:41,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:41,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:41,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:41,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:41,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 18:30:41,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:41,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:41,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:41,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:41,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:41,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-09-24 18:30:41,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:41,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:41,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:41,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:41,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:41,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 18:30:41,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:41,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:41,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:41,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:41,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:41,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-09-24 18:30:41,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:41,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:41,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:41,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:41,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:41,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 18:30:41,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:41,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:30:41,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 18:30:41,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:30:41,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:41,392 INFO L134 CoverageAnalysis]: Checked inductivity of 580 backedges. 250 proven. 184 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2020-09-24 18:30:41,393 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1831527820] [2020-09-24 18:30:41,393 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:30:41,393 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-09-24 18:30:41,393 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711310730] [2020-09-24 18:30:41,394 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-09-24 18:30:41,394 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:30:41,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-09-24 18:30:41,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=309, Unknown=0, NotChecked=0, Total=420 [2020-09-24 18:30:41,395 INFO L87 Difference]: Start difference. First operand 164 states and 169 transitions. Second operand 21 states. [2020-09-24 18:30:42,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:30:42,204 INFO L93 Difference]: Finished difference Result 314 states and 346 transitions. [2020-09-24 18:30:42,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-24 18:30:42,204 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 166 [2020-09-24 18:30:42,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:30:42,206 INFO L225 Difference]: With dead ends: 314 [2020-09-24 18:30:42,206 INFO L226 Difference]: Without dead ends: 245 [2020-09-24 18:30:42,208 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=489, Invalid=993, Unknown=0, NotChecked=0, Total=1482 [2020-09-24 18:30:42,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2020-09-24 18:30:42,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 170. [2020-09-24 18:30:42,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2020-09-24 18:30:42,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 175 transitions. [2020-09-24 18:30:42,217 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 175 transitions. Word has length 166 [2020-09-24 18:30:42,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:30:42,218 INFO L479 AbstractCegarLoop]: Abstraction has 170 states and 175 transitions. [2020-09-24 18:30:42,218 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-09-24 18:30:42,218 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 175 transitions. [2020-09-24 18:30:42,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-09-24 18:30:42,220 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:30:42,220 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 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 18:30:42,220 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-09-24 18:30:42,220 INFO L427 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:30:42,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:30:42,221 INFO L82 PathProgramCache]: Analyzing trace with hash -586773351, now seen corresponding path program 15 times [2020-09-24 18:30:42,221 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:30:42,221 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [145088931] [2020-09-24 18:30:42,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:30:42,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:42,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:42,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:47,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:47,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-09-24 18:30:47,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 18:30:47,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-24 18:30:47,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:47,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-24 18:30:47,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 18:30:47,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 184 [2020-09-24 18:30:47,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:47,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:30:47,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:47,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:47,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:47,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:30:47,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:47,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 18:30:47,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:47,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:30:47,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:47,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:30:47,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:30:47,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-09-24 18:30:47,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:47,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:47,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:47,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:47,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:47,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 18:30:47,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:47,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:47,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:47,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:47,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 18:30:47,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-24 18:30:47,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:47,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:47,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:47,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:47,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:47,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 18:30:47,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:47,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:47,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:47,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:47,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:47,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-09-24 18:30:47,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:47,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:47,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:47,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:47,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:47,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 18:30:47,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:47,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:47,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:47,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:47,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:47,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-09-24 18:30:47,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:47,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:47,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:47,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:47,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:47,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 18:30:47,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:47,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:47,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:47,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:47,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:47,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-09-24 18:30:47,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:47,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:47,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:47,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:47,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:47,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 18:30:47,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:47,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:47,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:47,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:47,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:47,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-09-24 18:30:47,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:47,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:47,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:47,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:47,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:47,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 18:30:47,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:47,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:47,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:47,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:47,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-09-24 18:30:47,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-09-24 18:30:47,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:47,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:47,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:47,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:47,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:47,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 18:30:47,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:47,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:47,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:47,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:47,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:47,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2020-09-24 18:30:47,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:47,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:47,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:47,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:47,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:47,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 18:30:47,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:47,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:47,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:47,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:47,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:47,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-09-24 18:30:47,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:47,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:47,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:47,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:47,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:47,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 18:30:47,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:47,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:47,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:47,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:47,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:47,581 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 252 proven. 234 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2020-09-24 18:30:47,581 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [145088931] [2020-09-24 18:30:47,582 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:30:47,582 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-24 18:30:47,582 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833728778] [2020-09-24 18:30:47,583 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-24 18:30:47,583 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:30:47,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-24 18:30:47,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2020-09-24 18:30:47,584 INFO L87 Difference]: Start difference. First operand 170 states and 175 transitions. Second operand 14 states. [2020-09-24 18:30:47,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:30:47,727 INFO L93 Difference]: Finished difference Result 187 states and 192 transitions. [2020-09-24 18:30:47,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-24 18:30:47,727 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 172 [2020-09-24 18:30:47,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:30:47,730 INFO L225 Difference]: With dead ends: 187 [2020-09-24 18:30:47,730 INFO L226 Difference]: Without dead ends: 185 [2020-09-24 18:30:47,731 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2020-09-24 18:30:47,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-09-24 18:30:47,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 180. [2020-09-24 18:30:47,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2020-09-24 18:30:47,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 185 transitions. [2020-09-24 18:30:47,741 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 185 transitions. Word has length 172 [2020-09-24 18:30:47,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:30:47,741 INFO L479 AbstractCegarLoop]: Abstraction has 180 states and 185 transitions. [2020-09-24 18:30:47,742 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-24 18:30:47,742 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 185 transitions. [2020-09-24 18:30:47,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-09-24 18:30:47,744 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:30:47,744 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 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 18:30:47,744 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-09-24 18:30:47,744 INFO L427 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:30:47,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:30:47,745 INFO L82 PathProgramCache]: Analyzing trace with hash 270313447, now seen corresponding path program 16 times [2020-09-24 18:30:47,745 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:30:47,745 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1387565261] [2020-09-24 18:30:47,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:30:47,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:47,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:48,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:49,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:49,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 211 [2020-09-24 18:30:49,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 18:30:49,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1763 [2020-09-24 18:30:49,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:49,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-24 18:30:49,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-24 18:30:49,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 168 [2020-09-24 18:30:49,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:49,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:30:49,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:49,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:49,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:49,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:30:49,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:49,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 18:30:49,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:49,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:30:49,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:49,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:30:49,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:49,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-09-24 18:30:49,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:49,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:49,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:49,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:49,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:49,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 18:30:49,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:49,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:49,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:49,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:49,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:49,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-24 18:30:49,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:49,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:49,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:49,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:49,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:49,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 18:30:49,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:49,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:49,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:49,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:49,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:49,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-09-24 18:30:49,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:49,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:49,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:49,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:49,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:49,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 18:30:49,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:49,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:49,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:49,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:49,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:49,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-09-24 18:30:49,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:49,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:49,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:49,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:49,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:49,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 18:30:49,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:49,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:49,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:49,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:49,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:49,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-09-24 18:30:49,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:49,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:49,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:49,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:49,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:49,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 18:30:49,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:49,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:49,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:49,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:49,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:49,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-09-24 18:30:49,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:49,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:49,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:49,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:49,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:49,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 18:30:49,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:49,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:49,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:49,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:49,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:49,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-09-24 18:30:49,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:49,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:49,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:49,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:49,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:49,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 18:30:49,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:49,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:49,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:49,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:49,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:49,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2020-09-24 18:30:49,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:49,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:49,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:49,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:49,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:49,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 18:30:49,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:49,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:49,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:49,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:49,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:49,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-09-24 18:30:49,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:49,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:49,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:49,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:49,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:49,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 18:30:49,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:49,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:49,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:49,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:49,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:49,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2020-09-24 18:30:49,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:49,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:49,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:49,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:49,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:49,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 18:30:49,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:49,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:30:49,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 18:30:49,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:30:49,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:50,015 INFO L134 CoverageAnalysis]: Checked inductivity of 724 backedges. 308 proven. 234 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2020-09-24 18:30:50,016 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1387565261] [2020-09-24 18:30:50,016 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:30:50,016 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-09-24 18:30:50,016 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197983972] [2020-09-24 18:30:50,017 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-09-24 18:30:50,017 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:30:50,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-09-24 18:30:50,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=373, Unknown=0, NotChecked=0, Total=506 [2020-09-24 18:30:50,018 INFO L87 Difference]: Start difference. First operand 180 states and 185 transitions. Second operand 23 states. [2020-09-24 18:30:50,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:30:50,963 INFO L93 Difference]: Finished difference Result 344 states and 379 transitions. [2020-09-24 18:30:50,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-09-24 18:30:50,963 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 182 [2020-09-24 18:30:50,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:30:50,965 INFO L225 Difference]: With dead ends: 344 [2020-09-24 18:30:50,965 INFO L226 Difference]: Without dead ends: 269 [2020-09-24 18:30:50,967 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=593, Invalid=1213, Unknown=0, NotChecked=0, Total=1806 [2020-09-24 18:30:50,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2020-09-24 18:30:50,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 186. [2020-09-24 18:30:50,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186 states. [2020-09-24 18:30:50,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 191 transitions. [2020-09-24 18:30:50,978 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 191 transitions. Word has length 182 [2020-09-24 18:30:50,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:30:50,979 INFO L479 AbstractCegarLoop]: Abstraction has 186 states and 191 transitions. [2020-09-24 18:30:50,979 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-09-24 18:30:50,979 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 191 transitions. [2020-09-24 18:30:50,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-09-24 18:30:50,981 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:30:50,981 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 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 18:30:50,982 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-09-24 18:30:50,982 INFO L427 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:30:50,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:30:50,982 INFO L82 PathProgramCache]: Analyzing trace with hash 1179515375, now seen corresponding path program 17 times [2020-09-24 18:30:50,982 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:30:50,983 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1920065069] [2020-09-24 18:30:50,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:30:51,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:51,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:51,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:56,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:56,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 217 [2020-09-24 18:30:56,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 18:30:56,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-09-24 18:30:56,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:56,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-09-24 18:30:56,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-24 18:30:56,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 186 [2020-09-24 18:30:56,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:56,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:30:56,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:56,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:56,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:56,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:30:56,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:56,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 18:30:56,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:56,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:30:56,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:56,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:30:56,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:56,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-24 18:30:56,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:56,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:56,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:56,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:56,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:56,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 18:30:56,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:56,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:56,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:56,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:56,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:56,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-09-24 18:30:56,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:56,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:56,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:56,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:56,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:56,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 18:30:56,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:56,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:56,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:56,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:56,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:56,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-24 18:30:56,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:56,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:56,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:56,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:56,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:56,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 18:30:56,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:56,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:56,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:56,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:56,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:56,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-09-24 18:30:56,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:56,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:56,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:56,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:56,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:56,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 18:30:56,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:56,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:56,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:56,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:56,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:56,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-24 18:30:56,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:56,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:56,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:56,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:56,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:56,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 18:30:56,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:56,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:56,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:56,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:56,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:56,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-09-24 18:30:56,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:56,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:56,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:56,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:56,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:56,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 18:30:56,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:56,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:56,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:56,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:56,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:56,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-09-24 18:30:56,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:56,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:56,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:56,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:56,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:56,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 18:30:56,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:56,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:56,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:56,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:56,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:56,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-09-24 18:30:56,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:56,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:56,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:56,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:56,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:56,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 18:30:56,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:56,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:56,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:56,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:56,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:56,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2020-09-24 18:30:56,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:56,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:56,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:56,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:56,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:56,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 18:30:56,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:56,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:56,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:56,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:56,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:56,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2020-09-24 18:30:56,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:56,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:56,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:56,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:56,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:56,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 18:30:56,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:56,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:56,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:56,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:56,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:56,538 INFO L134 CoverageAnalysis]: Checked inductivity of 780 backedges. 310 proven. 290 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2020-09-24 18:30:56,538 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1920065069] [2020-09-24 18:30:56,539 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:30:56,539 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-09-24 18:30:56,539 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653374812] [2020-09-24 18:30:56,540 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-09-24 18:30:56,540 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:30:56,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-09-24 18:30:56,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=443, Unknown=0, NotChecked=0, Total=600 [2020-09-24 18:30:56,541 INFO L87 Difference]: Start difference. First operand 186 states and 191 transitions. Second operand 25 states. [2020-09-24 18:30:57,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:30:57,597 INFO L93 Difference]: Finished difference Result 358 states and 396 transitions. [2020-09-24 18:30:57,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-09-24 18:30:57,597 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 188 [2020-09-24 18:30:57,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:30:57,599 INFO L225 Difference]: With dead ends: 358 [2020-09-24 18:30:57,599 INFO L226 Difference]: Without dead ends: 283 [2020-09-24 18:30:57,601 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 220 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=707, Invalid=1455, Unknown=0, NotChecked=0, Total=2162 [2020-09-24 18:30:57,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2020-09-24 18:30:57,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 192. [2020-09-24 18:30:57,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2020-09-24 18:30:57,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 197 transitions. [2020-09-24 18:30:57,612 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 197 transitions. Word has length 188 [2020-09-24 18:30:57,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:30:57,613 INFO L479 AbstractCegarLoop]: Abstraction has 192 states and 197 transitions. [2020-09-24 18:30:57,613 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-09-24 18:30:57,613 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 197 transitions. [2020-09-24 18:30:57,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-09-24 18:30:57,615 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:30:57,615 INFO L422 BasicCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 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 18:30:57,615 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-09-24 18:30:57,615 INFO L427 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:30:57,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:30:57,616 INFO L82 PathProgramCache]: Analyzing trace with hash -1175738889, now seen corresponding path program 18 times [2020-09-24 18:30:57,616 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:30:57,616 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1139381584] [2020-09-24 18:30:57,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:30:57,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:57,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:59,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:59,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 223 [2020-09-24 18:30:59,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:59,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1469 [2020-09-24 18:30:59,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:59,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-09-24 18:30:59,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 18:30:59,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 208 [2020-09-24 18:30:59,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:59,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:30:59,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:59,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:59,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:59,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:30:59,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:59,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 18:30:59,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:59,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:30:59,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:59,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:30:59,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:59,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-24 18:30:59,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:59,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:59,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:59,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:59,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:59,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 18:30:59,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:59,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:59,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:59,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:59,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:59,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-24 18:30:59,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:59,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:59,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:59,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:59,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:59,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 18:30:59,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:59,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:59,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:59,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:59,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:59,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-24 18:30:59,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:59,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:59,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:59,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:59,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:59,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 18:30:59,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:59,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:59,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:59,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:59,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:59,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-09-24 18:30:59,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:59,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:59,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:59,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:59,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:59,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 18:30:59,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:59,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:59,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:59,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:59,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:59,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-09-24 18:30:59,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:59,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:59,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:59,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:59,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:59,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 18:30:59,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:59,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:59,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:59,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:59,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:59,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-09-24 18:30:59,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:59,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:59,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:59,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:59,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:59,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 18:30:59,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:59,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:59,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:59,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:59,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:59,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-09-24 18:30:59,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:59,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:59,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:59,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:59,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:59,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 18:30:59,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:59,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:59,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:59,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:59,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:59,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-09-24 18:30:59,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:59,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:59,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:59,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:59,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:59,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 18:30:59,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:59,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:59,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:59,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:59,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:59,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-09-24 18:30:59,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:59,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:59,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:59,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:59,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:59,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 18:30:59,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:59,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:59,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:59,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:59,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:59,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2020-09-24 18:30:59,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:59,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:30:59,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:30:59,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:30:59,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:30:59,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 18:30:59,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:30:59,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:30:59,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:30:59,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:30:59,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:30:59,440 INFO L134 CoverageAnalysis]: Checked inductivity of 842 backedges. 372 proven. 290 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2020-09-24 18:30:59,440 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1139381584] [2020-09-24 18:30:59,440 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:30:59,441 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-24 18:30:59,441 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068724968] [2020-09-24 18:30:59,442 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-24 18:30:59,442 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:30:59,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-24 18:30:59,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=145, Unknown=0, NotChecked=0, Total=240 [2020-09-24 18:30:59,443 INFO L87 Difference]: Start difference. First operand 192 states and 197 transitions. Second operand 16 states. [2020-09-24 18:30:59,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:30:59,593 INFO L93 Difference]: Finished difference Result 215 states and 221 transitions. [2020-09-24 18:30:59,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-24 18:30:59,593 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 194 [2020-09-24 18:30:59,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:30:59,595 INFO L225 Difference]: With dead ends: 215 [2020-09-24 18:30:59,596 INFO L226 Difference]: Without dead ends: 213 [2020-09-24 18:30:59,596 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=173, Unknown=0, NotChecked=0, Total=272 [2020-09-24 18:30:59,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2020-09-24 18:30:59,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 208. [2020-09-24 18:30:59,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 208 states. [2020-09-24 18:30:59,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 214 transitions. [2020-09-24 18:30:59,607 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 214 transitions. Word has length 194 [2020-09-24 18:30:59,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:30:59,608 INFO L479 AbstractCegarLoop]: Abstraction has 208 states and 214 transitions. [2020-09-24 18:30:59,608 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-24 18:30:59,608 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 214 transitions. [2020-09-24 18:30:59,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2020-09-24 18:30:59,610 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:30:59,610 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 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 18:30:59,610 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-09-24 18:30:59,611 INFO L427 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:30:59,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:30:59,611 INFO L82 PathProgramCache]: Analyzing trace with hash 1690581011, now seen corresponding path program 19 times [2020-09-24 18:30:59,611 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:30:59,611 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [430514726] [2020-09-24 18:30:59,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:30:59,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:30:59,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking...