/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=HIGHLEXORDER --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_2-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 22:39:24,700 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 22:39:24,703 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 22:39:24,729 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 22:39:24,729 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 22:39:24,730 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 22:39:24,732 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 22:39:24,734 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 22:39:24,735 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 22:39:24,736 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 22:39:24,737 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 22:39:24,741 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 22:39:24,741 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 22:39:24,743 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 22:39:24,747 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 22:39:24,748 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 22:39:24,749 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 22:39:24,752 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 22:39:24,753 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 22:39:24,755 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 22:39:24,759 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 22:39:24,760 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 22:39:24,761 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 22:39:24,762 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 22:39:24,769 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 22:39:24,769 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 22:39:24,769 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 22:39:24,772 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 22:39:24,772 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 22:39:24,773 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 22:39:24,773 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 22:39:24,776 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 22:39:24,777 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 22:39:24,778 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 22:39:24,779 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 22:39:24,779 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 22:39:24,780 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 22:39:24,780 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 22:39:24,780 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 22:39:24,781 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 22:39:24,783 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 22:39:24,784 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 22:39:24,840 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 22:39:24,840 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 22:39:24,846 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 22:39:24,846 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 22:39:24,846 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 22:39:24,846 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 22:39:24,847 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 22:39:24,847 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 22:39:24,847 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 22:39:24,847 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 22:39:24,847 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 22:39:24,848 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 22:39:24,848 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 22:39:24,848 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 22:39:24,848 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 22:39:24,849 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 22:39:24,850 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 22:39:24,850 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 22:39:24,850 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 22:39:24,850 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 22:39:24,851 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 22:39:24,851 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 22:39:24,851 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 22:39:24,851 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 22:39:24,851 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 22:39:24,852 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 22:39:24,852 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 22:39:24,852 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 22:39:24,852 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 22:39:24,852 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=HIGHLEXORDER;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=HIGHLEXORDER;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=HIGHLEXORDER;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=HIGHLEXORDER;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=HIGHLEXORDER;log-additional-information=true; [2020-09-24 22:39:25,317 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 22:39:25,335 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 22:39:25,340 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 22:39:25,342 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 22:39:25,342 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 22:39:25,343 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_2-2.c [2020-09-24 22:39:25,426 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2e055af4a/a4dc337246d5480eb83e0b6ea7a606fc/FLAG14a468b7d [2020-09-24 22:39:25,949 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 22:39:25,950 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_2calls_2-2.c [2020-09-24 22:39:25,958 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2e055af4a/a4dc337246d5480eb83e0b6ea7a606fc/FLAG14a468b7d [2020-09-24 22:39:26,311 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2e055af4a/a4dc337246d5480eb83e0b6ea7a606fc [2020-09-24 22:39:26,328 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 22:39:26,334 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 22:39:26,335 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 22:39:26,335 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 22:39:26,339 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 22:39:26,340 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 10:39:26" (1/1) ... [2020-09-24 22:39:26,345 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@176ea22d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:39:26, skipping insertion in model container [2020-09-24 22:39:26,345 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 10:39:26" (1/1) ... [2020-09-24 22:39:26,354 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 22:39:26,381 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 22:39:26,612 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 22:39:26,618 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 22:39:26,639 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 22:39:26,656 INFO L208 MainTranslator]: Completed translation [2020-09-24 22:39:26,657 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:39:26 WrapperNode [2020-09-24 22:39:26,657 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 22:39:26,658 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 22:39:26,658 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 22:39:26,658 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 22:39:26,672 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:39:26" (1/1) ... [2020-09-24 22:39:26,673 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:39:26" (1/1) ... [2020-09-24 22:39:26,757 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:39:26" (1/1) ... [2020-09-24 22:39:26,758 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:39:26" (1/1) ... [2020-09-24 22:39:26,762 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:39:26" (1/1) ... [2020-09-24 22:39:26,765 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:39:26" (1/1) ... [2020-09-24 22:39:26,766 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:39:26" (1/1) ... [2020-09-24 22:39:26,768 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 22:39:26,769 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 22:39:26,769 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 22:39:26,769 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 22:39:26,770 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:39:26" (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 22:39:26,858 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 22:39:26,858 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 22:39:26,858 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2020-09-24 22:39:26,859 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2020-09-24 22:39:26,859 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 22:39:26,859 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 22:39:26,859 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 22:39:26,859 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2020-09-24 22:39:26,860 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2020-09-24 22:39:26,860 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 22:39:26,860 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 22:39:26,860 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 22:39:27,080 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 22:39:27,081 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 22:39:27,086 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 10:39:27 BoogieIcfgContainer [2020-09-24 22:39:27,087 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 22:39:27,088 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 22:39:27,088 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 22:39:27,092 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 22:39:27,093 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 10:39:26" (1/3) ... [2020-09-24 22:39:27,094 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@651923f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 10:39:27, skipping insertion in model container [2020-09-24 22:39:27,094 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:39:26" (2/3) ... [2020-09-24 22:39:27,095 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@651923f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 10:39:27, skipping insertion in model container [2020-09-24 22:39:27,095 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 10:39:27" (3/3) ... [2020-09-24 22:39:27,097 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_2calls_2-2.c [2020-09-24 22:39:27,109 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 22:39:27,120 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 22:39:27,146 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 22:39:27,212 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 22:39:27,212 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 22:39:27,212 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 22:39:27,212 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 22:39:27,213 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 22:39:27,213 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 22:39:27,213 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 22:39:27,213 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 22:39:27,247 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2020-09-24 22:39:27,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-24 22:39:27,256 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:39:27,258 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:39:27,258 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:39:27,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:39:27,267 INFO L82 PathProgramCache]: Analyzing trace with hash -1089710179, now seen corresponding path program 1 times [2020-09-24 22:39:27,279 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:39:27,279 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [52716697] [2020-09-24 22:39:27,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:39:27,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:27,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:27,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:27,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 22:39:27,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:27,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-09-24 22:39:27,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:27,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:39:27,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 22:39:27,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 22:39:27,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 22:39:27,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:39:27,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:27,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:27,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:27,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:39:27,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:27,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 22:39:27,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:27,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:39:27,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:27,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:39:27,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:39:27,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 22:39:27,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:27,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:27,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:27,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:39:27,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:27,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-24 22:39:27,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:27,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:39:27,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 22:39:27,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:39:27,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 22:39:27,647 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 22:39:27,648 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [52716697] [2020-09-24 22:39:27,651 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:39:27,651 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 22:39:27,653 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493573975] [2020-09-24 22:39:27,660 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 22:39:27,660 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:39:27,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 22:39:27,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 22:39:27,680 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 5 states. [2020-09-24 22:39:27,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:39:27,824 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2020-09-24 22:39:27,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 22:39:27,826 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-24 22:39:27,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:39:27,841 INFO L225 Difference]: With dead ends: 58 [2020-09-24 22:39:27,841 INFO L226 Difference]: Without dead ends: 42 [2020-09-24 22:39:27,846 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 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 22:39:27,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-24 22:39:27,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-09-24 22:39:27,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-24 22:39:27,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-24 22:39:27,903 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 16 [2020-09-24 22:39:27,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:39:27,904 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-24 22:39:27,904 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 22:39:27,904 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-24 22:39:27,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-24 22:39:27,906 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:39:27,907 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:39:27,907 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 22:39:27,907 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:39:27,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:39:27,908 INFO L82 PathProgramCache]: Analyzing trace with hash -653728005, now seen corresponding path program 1 times [2020-09-24 22:39:27,908 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:39:27,909 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2105299557] [2020-09-24 22:39:27,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:39:27,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:27,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:27,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:28,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:28,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-24 22:39:28,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:39:28,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 171 [2020-09-24 22:39:28,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:28,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:39:28,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 22:39:28,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:39:28,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-09-24 22:39:28,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:39:28,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:28,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:28,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:28,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:39:28,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:28,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 22:39:28,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:28,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:39:28,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:28,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:39:28,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:39:28,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 22:39:28,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:28,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:28,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:28,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:39:28,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:28,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-24 22:39:28,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:28,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 22:39:28,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:28,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:39:28,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:28,218 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 22:39:28,218 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2105299557] [2020-09-24 22:39:28,219 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:39:28,219 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 22:39:28,219 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670331134] [2020-09-24 22:39:28,222 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 22:39:28,224 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:39:28,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 22:39:28,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 22:39:28,225 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 5 states. [2020-09-24 22:39:28,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:39:28,275 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2020-09-24 22:39:28,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 22:39:28,276 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-24 22:39:28,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:39:28,278 INFO L225 Difference]: With dead ends: 50 [2020-09-24 22:39:28,278 INFO L226 Difference]: Without dead ends: 44 [2020-09-24 22:39:28,280 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 22:39:28,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-24 22:39:28,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2020-09-24 22:39:28,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-24 22:39:28,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-24 22:39:28,292 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 17 [2020-09-24 22:39:28,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:39:28,292 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-24 22:39:28,292 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 22:39:28,293 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-24 22:39:28,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-24 22:39:28,295 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:39:28,295 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:39:28,295 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 22:39:28,295 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:39:28,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:39:28,296 INFO L82 PathProgramCache]: Analyzing trace with hash -1617834856, now seen corresponding path program 1 times [2020-09-24 22:39:28,296 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:39:28,296 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1805041316] [2020-09-24 22:39:28,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:39:28,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:28,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:28,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:28,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:28,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-24 22:39:28,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:39:28,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 255 [2020-09-24 22:39:28,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:28,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:39:28,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 22:39:28,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:39:28,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:39:28,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:39:28,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:28,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:28,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:28,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:39:28,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:28,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 22:39:28,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:28,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:39:28,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:28,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:39:28,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:39:28,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 22:39:28,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:28,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:28,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:28,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-24 22:39:28,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:28,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-09-24 22:39:28,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:28,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:39:28,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-24 22:39:28,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:39:28,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:28,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:39:28,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:28,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:28,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:28,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:39:28,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:28,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 22:39:28,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:28,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:39:28,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 22:39:28,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:39:28,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:28,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 22:39:28,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:28,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:28,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:28,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:39:28,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:28,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 22:39:28,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:28,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:39:28,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 22:39:28,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:39:28,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:28,786 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 22:39:28,786 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1805041316] [2020-09-24 22:39:28,787 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:39:28,787 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-24 22:39:28,787 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834001422] [2020-09-24 22:39:28,788 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 22:39:28,788 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:39:28,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 22:39:28,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-24 22:39:28,789 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 6 states. [2020-09-24 22:39:28,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:39:28,867 INFO L93 Difference]: Finished difference Result 82 states and 102 transitions. [2020-09-24 22:39:28,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 22:39:28,867 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2020-09-24 22:39:28,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:39:28,869 INFO L225 Difference]: With dead ends: 82 [2020-09-24 22:39:28,869 INFO L226 Difference]: Without dead ends: 46 [2020-09-24 22:39:28,871 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 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 22:39:28,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-09-24 22:39:28,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 44. [2020-09-24 22:39:28,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-09-24 22:39:28,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 51 transitions. [2020-09-24 22:39:28,884 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 51 transitions. Word has length 33 [2020-09-24 22:39:28,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:39:28,885 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 51 transitions. [2020-09-24 22:39:28,885 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 22:39:28,885 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 51 transitions. [2020-09-24 22:39:28,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-24 22:39:28,887 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:39:28,888 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:39:28,888 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 22:39:28,888 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:39:28,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:39:28,889 INFO L82 PathProgramCache]: Analyzing trace with hash 887160861, now seen corresponding path program 1 times [2020-09-24 22:39:28,889 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:39:28,889 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2135720179] [2020-09-24 22:39:28,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:39:28,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:28,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:29,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:29,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 22:39:29,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:29,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-09-24 22:39:29,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:29,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 22:39:29,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-24 22:39:29,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-24 22:39:29,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:29,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:39:29,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:29,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:29,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:29,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:39:29,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:29,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 22:39:29,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:29,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:39:29,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:29,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:39:29,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:29,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 22:39:29,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:29,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:29,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:29,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 22:39:29,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:29,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-09-24 22:39:29,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:29,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 22:39:29,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:29,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 22:39:29,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:29,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:39:29,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:29,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:29,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:29,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:39:29,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:29,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-24 22:39:29,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:29,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 22:39:29,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:29,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:39:29,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:29,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 22:39:29,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:29,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:29,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:29,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:39:29,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:29,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-24 22:39:29,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:29,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:39:29,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:29,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:39:29,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:29,272 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-24 22:39:29,272 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2135720179] [2020-09-24 22:39:29,272 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:39:29,273 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 22:39:29,273 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645937984] [2020-09-24 22:39:29,274 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 22:39:29,274 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:39:29,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 22:39:29,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-09-24 22:39:29,275 INFO L87 Difference]: Start difference. First operand 44 states and 51 transitions. Second operand 9 states. [2020-09-24 22:39:29,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:39:29,386 INFO L93 Difference]: Finished difference Result 65 states and 78 transitions. [2020-09-24 22:39:29,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 22:39:29,387 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 34 [2020-09-24 22:39:29,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:39:29,389 INFO L225 Difference]: With dead ends: 65 [2020-09-24 22:39:29,390 INFO L226 Difference]: Without dead ends: 59 [2020-09-24 22:39:29,390 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-09-24 22:39:29,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-09-24 22:39:29,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 52. [2020-09-24 22:39:29,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-09-24 22:39:29,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 63 transitions. [2020-09-24 22:39:29,402 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 63 transitions. Word has length 34 [2020-09-24 22:39:29,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:39:29,403 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 63 transitions. [2020-09-24 22:39:29,403 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 22:39:29,403 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 63 transitions. [2020-09-24 22:39:29,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-24 22:39:29,405 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:39:29,406 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:39:29,406 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 22:39:29,406 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:39:29,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:39:29,407 INFO L82 PathProgramCache]: Analyzing trace with hash 186293384, now seen corresponding path program 1 times [2020-09-24 22:39:29,407 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:39:29,407 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [288633153] [2020-09-24 22:39:29,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:39:29,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:29,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:29,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:29,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:29,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:29,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:29,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-24 22:39:29,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 22:39:29,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 579 [2020-09-24 22:39:29,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:29,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:39:29,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 22:39:29,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 22:39:29,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:39:30,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:39:30,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:30,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:30,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:30,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:39:30,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:30,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 22:39:30,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:30,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:39:30,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:30,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:39:30,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:30,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 22:39:30,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:30,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:30,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:30,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:30,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 22:39:30,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:39:30,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-09-24 22:39:30,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:30,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:39:30,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 22:39:30,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 22:39:30,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:39:30,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:39:30,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:30,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:30,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:30,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:39:30,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:30,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-24 22:39:30,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:30,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:39:30,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:30,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 22:39:30,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:30,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 22:39:30,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:30,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:30,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:30,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:39:30,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:30,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-24 22:39:30,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:30,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:39:30,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 22:39:30,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 22:39:30,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:39:30,241 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-24 22:39:30,242 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [288633153] [2020-09-24 22:39:30,242 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:39:30,242 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 22:39:30,243 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036137365] [2020-09-24 22:39:30,243 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 22:39:30,244 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:39:30,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 22:39:30,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 22:39:30,245 INFO L87 Difference]: Start difference. First operand 52 states and 63 transitions. Second operand 5 states. [2020-09-24 22:39:30,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:39:30,322 INFO L93 Difference]: Finished difference Result 104 states and 133 transitions. [2020-09-24 22:39:30,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 22:39:30,323 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 35 [2020-09-24 22:39:30,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:39:30,325 INFO L225 Difference]: With dead ends: 104 [2020-09-24 22:39:30,325 INFO L226 Difference]: Without dead ends: 58 [2020-09-24 22:39:30,326 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 2 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 22:39:30,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-09-24 22:39:30,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 52. [2020-09-24 22:39:30,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-09-24 22:39:30,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 62 transitions. [2020-09-24 22:39:30,337 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 62 transitions. Word has length 35 [2020-09-24 22:39:30,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:39:30,337 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 62 transitions. [2020-09-24 22:39:30,338 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 22:39:30,338 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 62 transitions. [2020-09-24 22:39:30,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-24 22:39:30,340 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:39:30,341 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:39:30,341 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 22:39:30,341 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:39:30,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:39:30,341 INFO L82 PathProgramCache]: Analyzing trace with hash -2026330267, now seen corresponding path program 1 times [2020-09-24 22:39:30,342 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:39:30,342 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1973243209] [2020-09-24 22:39:30,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:39:30,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:30,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:30,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:30,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:31,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:35,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:35,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-24 22:39:35,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 22:39:35,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-24 22:39:35,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:35,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:39:35,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-09-24 22:39:35,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:39:35,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:35,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:39:35,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:35,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:35,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:35,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:39:35,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:35,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 22:39:35,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:35,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:39:35,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:35,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:39:35,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:35,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 22:39:35,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:35,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:35,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:35,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:35,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-24 22:39:35,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:39:35,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 399 [2020-09-24 22:39:35,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:35,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:39:35,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 22:39:35,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:39:35,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:35,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:39:35,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:35,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:35,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:35,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:39:35,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:35,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 22:39:35,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:35,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:39:35,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:35,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:39:35,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:35,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 22:39:35,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:35,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:35,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:35,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-24 22:39:35,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:35,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-24 22:39:35,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:35,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:39:35,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-24 22:39:35,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:39:35,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:35,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:39:35,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:35,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:35,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:35,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:39:35,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:35,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 22:39:35,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:35,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:39:35,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 22:39:35,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:39:35,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:35,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 22:39:35,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:35,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:35,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:35,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:39:35,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:35,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 22:39:35,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:35,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:39:35,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 22:39:35,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:39:35,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:35,898 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-24 22:39:35,899 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1973243209] [2020-09-24 22:39:35,899 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:39:35,899 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-24 22:39:35,899 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810927845] [2020-09-24 22:39:35,900 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 22:39:35,900 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:39:35,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 22:39:35,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-24 22:39:35,901 INFO L87 Difference]: Start difference. First operand 52 states and 62 transitions. Second operand 6 states. [2020-09-24 22:39:35,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:39:35,972 INFO L93 Difference]: Finished difference Result 100 states and 126 transitions. [2020-09-24 22:39:35,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 22:39:35,973 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 51 [2020-09-24 22:39:35,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:39:35,975 INFO L225 Difference]: With dead ends: 100 [2020-09-24 22:39:35,975 INFO L226 Difference]: Without dead ends: 54 [2020-09-24 22:39:35,976 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 15 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 22:39:35,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-09-24 22:39:35,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-09-24 22:39:35,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-24 22:39:35,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 64 transitions. [2020-09-24 22:39:35,984 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 64 transitions. Word has length 51 [2020-09-24 22:39:35,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:39:35,985 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 64 transitions. [2020-09-24 22:39:35,985 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 22:39:35,985 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 64 transitions. [2020-09-24 22:39:35,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-24 22:39:35,987 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:39:35,988 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:39:35,988 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 22:39:35,988 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:39:35,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:39:35,989 INFO L82 PathProgramCache]: Analyzing trace with hash -945821099, now seen corresponding path program 1 times [2020-09-24 22:39:35,989 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:39:35,989 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [946290308] [2020-09-24 22:39:35,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:39:35,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:36,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:36,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:36,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:36,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:36,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:36,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:37,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:37,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-24 22:39:37,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 22:39:37,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1557 [2020-09-24 22:39:37,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:37,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 22:39:37,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 22:39:37,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-24 22:39:37,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:37,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:39:37,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:37,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:37,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:37,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:39:37,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:37,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 22:39:37,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:37,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:39:37,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:37,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:39:37,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:37,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 22:39:37,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:37,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:37,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:37,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:37,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:37,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 22:39:37,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 22:39:37,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 266 [2020-09-24 22:39:37,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:37,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 22:39:37,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 22:39:37,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-24 22:39:37,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:37,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:39:37,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:37,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:37,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:37,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:39:37,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:37,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 22:39:37,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:37,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:39:37,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:37,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 22:39:37,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:37,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 22:39:37,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:37,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:37,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:37,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:38,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:38,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 22:39:38,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 22:39:38,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-09-24 22:39:38,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:38,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:39:38,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 22:39:38,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 22:39:38,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:39:38,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:39:38,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:38,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:38,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:38,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:38,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:39:38,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:39:38,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-24 22:39:38,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:38,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:39:38,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:38,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 22:39:38,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:39:38,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 22:39:38,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:38,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:38,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:38,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:39:38,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:38,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-24 22:39:38,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:38,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:39:38,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:38,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:39:38,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:39:38,195 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-24 22:39:38,196 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [946290308] [2020-09-24 22:39:38,196 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:39:38,197 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 22:39:38,198 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30618660] [2020-09-24 22:39:38,199 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 22:39:38,199 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:39:38,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 22:39:38,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-24 22:39:38,200 INFO L87 Difference]: Start difference. First operand 54 states and 64 transitions. Second operand 8 states. [2020-09-24 22:39:38,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:39:38,413 INFO L93 Difference]: Finished difference Result 102 states and 127 transitions. [2020-09-24 22:39:38,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-24 22:39:38,414 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2020-09-24 22:39:38,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:39:38,415 INFO L225 Difference]: With dead ends: 102 [2020-09-24 22:39:38,415 INFO L226 Difference]: Without dead ends: 54 [2020-09-24 22:39:38,416 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2020-09-24 22:39:38,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-09-24 22:39:38,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-09-24 22:39:38,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-24 22:39:38,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 63 transitions. [2020-09-24 22:39:38,433 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 63 transitions. Word has length 52 [2020-09-24 22:39:38,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:39:38,434 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 63 transitions. [2020-09-24 22:39:38,434 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 22:39:38,434 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 63 transitions. [2020-09-24 22:39:38,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-24 22:39:38,437 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:39:38,437 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:39:38,439 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 22:39:38,439 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:39:38,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:39:38,440 INFO L82 PathProgramCache]: Analyzing trace with hash 104828256, now seen corresponding path program 1 times [2020-09-24 22:39:38,440 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:39:38,440 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1387871887] [2020-09-24 22:39:38,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:39:38,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:38,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:38,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:38,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:38,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:38,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:39,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:39,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:40,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:43,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:43,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-24 22:39:43,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 22:39:43,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-24 22:39:43,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:43,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 22:39:43,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-09-24 22:39:43,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-24 22:39:43,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:39:43,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:39:43,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:43,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:43,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:43,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:39:43,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:43,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 22:39:43,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:43,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:39:43,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:43,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:39:43,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:43,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 22:39:43,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:43,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:43,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:43,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:43,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:43,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:45,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:45,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-24 22:39:45,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 22:39:45,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2146 [2020-09-24 22:39:45,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:45,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 22:39:45,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 22:39:45,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-24 22:39:45,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:39:45,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:39:45,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:45,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:45,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:45,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:45,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:45,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 22:39:45,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 22:39:45,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 320 [2020-09-24 22:39:45,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:45,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:39:45,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:45,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 22:39:45,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:39:46,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:39:46,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:46,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:46,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:46,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:39:46,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:46,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-24 22:39:46,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:46,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:39:46,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:46,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 22:39:46,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:39:46,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 22:39:46,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:46,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:46,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:46,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:39:46,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:46,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 22:39:46,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:46,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:39:46,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:46,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:39:46,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:39:46,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 22:39:46,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:46,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:46,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:46,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:39:46,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:46,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 22:39:46,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:46,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:39:46,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 22:39:46,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:39:46,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:46,150 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-09-24 22:39:46,151 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1387871887] [2020-09-24 22:39:46,151 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:39:46,152 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-24 22:39:46,152 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090109042] [2020-09-24 22:39:46,153 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 22:39:46,153 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:39:46,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 22:39:46,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-09-24 22:39:46,154 INFO L87 Difference]: Start difference. First operand 54 states and 63 transitions. Second operand 11 states. [2020-09-24 22:39:46,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:39:46,400 INFO L93 Difference]: Finished difference Result 120 states and 157 transitions. [2020-09-24 22:39:46,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 22:39:46,401 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 51 [2020-09-24 22:39:46,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:39:46,403 INFO L225 Difference]: With dead ends: 120 [2020-09-24 22:39:46,403 INFO L226 Difference]: Without dead ends: 72 [2020-09-24 22:39:46,404 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2020-09-24 22:39:46,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-09-24 22:39:46,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2020-09-24 22:39:46,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-09-24 22:39:46,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 93 transitions. [2020-09-24 22:39:46,425 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 93 transitions. Word has length 51 [2020-09-24 22:39:46,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:39:46,425 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 93 transitions. [2020-09-24 22:39:46,425 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 22:39:46,425 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 93 transitions. [2020-09-24 22:39:46,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-24 22:39:46,431 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:39:46,432 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:39:46,432 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 22:39:46,432 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:39:46,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:39:46,432 INFO L82 PathProgramCache]: Analyzing trace with hash 1703786405, now seen corresponding path program 2 times [2020-09-24 22:39:46,433 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:39:46,433 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1223923361] [2020-09-24 22:39:46,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:39:46,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:46,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:46,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:46,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:46,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:46,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:48,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:48,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-24 22:39:48,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 22:39:48,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1956 [2020-09-24 22:39:48,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:48,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:39:48,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 22:39:48,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-24 22:39:48,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:48,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:39:48,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:48,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:48,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:48,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:39:48,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:48,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 22:39:48,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:48,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:39:48,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:48,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:39:48,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:48,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 22:39:48,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:48,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:48,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:48,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:48,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:48,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:49,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:49,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 22:39:49,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 22:39:49,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1068 [2020-09-24 22:39:49,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:49,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:39:49,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 22:39:49,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 22:39:49,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:49,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:39:49,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:49,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:49,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:49,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 22:39:49,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:49,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-24 22:39:49,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:49,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:39:49,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:49,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 22:39:49,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:49,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:39:49,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:49,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:49,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:49,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:39:49,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:49,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 22:39:49,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:49,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:39:49,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:49,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:39:49,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:49,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 22:39:49,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:49,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:49,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:49,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:39:49,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:49,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 22:39:49,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:49,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:39:49,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:49,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:39:49,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:49,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 22:39:49,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:49,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:49,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:49,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:49,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:39:49,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:39:49,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-24 22:39:49,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:49,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:39:49,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:49,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 22:39:49,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:49,627 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-24 22:39:49,627 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1223923361] [2020-09-24 22:39:49,627 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:39:49,628 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 22:39:49,628 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451166878] [2020-09-24 22:39:49,628 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 22:39:49,629 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:39:49,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 22:39:49,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-24 22:39:49,629 INFO L87 Difference]: Start difference. First operand 72 states and 93 transitions. Second operand 7 states. [2020-09-24 22:39:49,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:39:49,725 INFO L93 Difference]: Finished difference Result 90 states and 116 transitions. [2020-09-24 22:39:49,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 22:39:49,725 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 52 [2020-09-24 22:39:49,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:39:49,727 INFO L225 Difference]: With dead ends: 90 [2020-09-24 22:39:49,727 INFO L226 Difference]: Without dead ends: 84 [2020-09-24 22:39:49,728 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-24 22:39:49,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-09-24 22:39:49,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 76. [2020-09-24 22:39:49,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-09-24 22:39:49,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 97 transitions. [2020-09-24 22:39:49,738 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 97 transitions. Word has length 52 [2020-09-24 22:39:49,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:39:49,739 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 97 transitions. [2020-09-24 22:39:49,739 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 22:39:49,739 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 97 transitions. [2020-09-24 22:39:49,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-09-24 22:39:49,740 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:39:49,741 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:39:49,741 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 22:39:49,741 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:39:49,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:39:49,741 INFO L82 PathProgramCache]: Analyzing trace with hash -1513763016, now seen corresponding path program 1 times [2020-09-24 22:39:49,742 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:39:49,742 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1491602848] [2020-09-24 22:39:49,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:39:49,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:49,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:49,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:49,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:49,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:49,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:49,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:50,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:50,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:52,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:52,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:54,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:54,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-09-24 22:39:54,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-24 22:39:54,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-24 22:39:54,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:54,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 22:39:54,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 22:39:54,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-24 22:39:54,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:54,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:39:54,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:54,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:54,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:54,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:39:54,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:54,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 22:39:54,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:54,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:39:54,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:54,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:39:54,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:54,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 22:39:54,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:54,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:54,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:54,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:54,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:54,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:55,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:55,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:55,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:55,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:55,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:55,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:57,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:57,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:57,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:58,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:59,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:59,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-09-24 22:39:59,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-09-24 22:39:59,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-24 22:39:59,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:59,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 22:39:59,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 22:39:59,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-09-24 22:39:59,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:59,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:39:59,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:59,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:59,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:59,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:59,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 22:39:59,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:39:59,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-09-24 22:39:59,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:59,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:39:59,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:59,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 22:39:59,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:40:00,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:40:00,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:00,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:00,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:00,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:40:00,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:40:00,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 22:40:00,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:00,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:40:00,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:40:00,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 22:40:00,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:40:00,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 22:40:00,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:00,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:00,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:00,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:40:00,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:40:00,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 22:40:00,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:00,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:40:00,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:40:00,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 22:40:00,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:40:00,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 22:40:00,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:00,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:00,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:00,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:00,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:00,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:00,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:02,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:02,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 22:40:02,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 22:40:02,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2801 [2020-09-24 22:40:02,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:02,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:40:02,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 22:40:02,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 22:40:02,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:40:02,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:40:02,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:02,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:02,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:02,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 22:40:02,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:40:02,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 22:40:02,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:02,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:40:02,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:40:02,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 22:40:02,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:40:02,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:40:02,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:02,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:02,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:02,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:40:02,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:40:02,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 22:40:02,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:02,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:40:02,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:40:02,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:40:02,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:40:02,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 22:40:02,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:02,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:02,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:02,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:40:02,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:40:02,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 22:40:02,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:02,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:40:02,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:40:02,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:40:02,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:40:02,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 22:40:02,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:02,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:02,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:02,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:02,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:40:02,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:40:02,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-24 22:40:02,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:02,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:40:02,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:40:02,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 22:40:02,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:40:02,995 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 36 proven. 23 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-09-24 22:40:02,996 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1491602848] [2020-09-24 22:40:02,997 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:40:02,997 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-24 22:40:02,997 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570712636] [2020-09-24 22:40:02,998 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 22:40:02,998 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:40:02,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 22:40:02,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-09-24 22:40:03,000 INFO L87 Difference]: Start difference. First operand 76 states and 97 transitions. Second operand 10 states. [2020-09-24 22:40:03,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:40:03,253 INFO L93 Difference]: Finished difference Result 204 states and 319 transitions. [2020-09-24 22:40:03,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 22:40:03,254 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 87 [2020-09-24 22:40:03,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:40:03,257 INFO L225 Difference]: With dead ends: 204 [2020-09-24 22:40:03,257 INFO L226 Difference]: Without dead ends: 134 [2020-09-24 22:40:03,258 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2020-09-24 22:40:03,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-09-24 22:40:03,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 104. [2020-09-24 22:40:03,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-09-24 22:40:03,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 147 transitions. [2020-09-24 22:40:03,293 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 147 transitions. Word has length 87 [2020-09-24 22:40:03,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:40:03,294 INFO L479 AbstractCegarLoop]: Abstraction has 104 states and 147 transitions. [2020-09-24 22:40:03,294 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-24 22:40:03,296 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 147 transitions. [2020-09-24 22:40:03,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-09-24 22:40:03,298 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:40:03,298 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:40:03,299 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-24 22:40:03,299 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:40:03,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:40:03,299 INFO L82 PathProgramCache]: Analyzing trace with hash 589230722, now seen corresponding path program 2 times [2020-09-24 22:40:03,299 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:40:03,301 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1501091882] [2020-09-24 22:40:03,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:40:03,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:03,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:03,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:03,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:03,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:03,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:03,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:04,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:04,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:04,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:04,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:05,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:05,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:05,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:05,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:05,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:05,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:06,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:08,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:08,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:08,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-09-24 22:40:08,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-09-24 22:40:08,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-24 22:40:08,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:08,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 22:40:08,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-09-24 22:40:08,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-24 22:40:08,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:40:08,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:40:08,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:08,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:08,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:08,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:40:08,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:40:08,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 22:40:08,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:08,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:40:08,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:40:08,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:40:08,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:40:08,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 22:40:08,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:08,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:08,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:08,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:08,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:08,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:08,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:08,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:08,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:09,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:09,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:09,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:10,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:10,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:13,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:13,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-09-24 22:40:13,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-24 22:40:13,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-24 22:40:13,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:13,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 22:40:13,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-24 22:40:13,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-24 22:40:13,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:40:13,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:40:13,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:13,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:13,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:13,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 22:40:13,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:40:13,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 22:40:13,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:13,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:40:13,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:40:13,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:40:13,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:40:13,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:40:13,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:13,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:13,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:13,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:40:13,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:40:13,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 22:40:13,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:13,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:40:13,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:40:13,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:40:13,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:40:13,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 22:40:13,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:13,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:13,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:13,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:40:13,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:40:13,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 22:40:13,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:13,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:40:13,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:40:13,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:40:13,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:40:13,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 22:40:13,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:13,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:13,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:13,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:13,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:14,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:14,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-24 22:40:14,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 22:40:14,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 962 [2020-09-24 22:40:14,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:14,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 22:40:14,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 22:40:14,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-24 22:40:14,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:40:14,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:40:14,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:14,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:14,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:14,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:14,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:14,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 22:40:14,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 22:40:14,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 199 [2020-09-24 22:40:14,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:14,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:40:14,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:40:14,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 22:40:14,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:40:14,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:40:14,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:14,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:14,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:14,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:40:14,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:40:14,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-24 22:40:14,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:14,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:40:14,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:40:14,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 22:40:14,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:40:14,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 22:40:14,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:14,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:14,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:14,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:40:14,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:40:14,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 22:40:14,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:14,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:40:14,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:40:14,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:40:14,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:40:14,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 22:40:14,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:14,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:14,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:14,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:40:14,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:40:14,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 22:40:14,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:14,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:40:14,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 22:40:14,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:40:14,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:40:14,699 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 50 proven. 6 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-09-24 22:40:14,699 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1501091882] [2020-09-24 22:40:14,700 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:40:14,700 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 22:40:14,700 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693440672] [2020-09-24 22:40:14,701 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 22:40:14,701 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:40:14,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 22:40:14,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-24 22:40:14,702 INFO L87 Difference]: Start difference. First operand 104 states and 147 transitions. Second operand 9 states. [2020-09-24 22:40:14,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:40:14,922 INFO L93 Difference]: Finished difference Result 224 states and 361 transitions. [2020-09-24 22:40:14,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 22:40:14,923 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 86 [2020-09-24 22:40:14,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:40:14,925 INFO L225 Difference]: With dead ends: 224 [2020-09-24 22:40:14,925 INFO L226 Difference]: Without dead ends: 124 [2020-09-24 22:40:14,927 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2020-09-24 22:40:14,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-09-24 22:40:14,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 112. [2020-09-24 22:40:14,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-09-24 22:40:14,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 163 transitions. [2020-09-24 22:40:14,948 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 163 transitions. Word has length 86 [2020-09-24 22:40:14,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:40:14,949 INFO L479 AbstractCegarLoop]: Abstraction has 112 states and 163 transitions. [2020-09-24 22:40:14,949 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 22:40:14,950 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 163 transitions. [2020-09-24 22:40:14,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-24 22:40:14,956 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:40:14,956 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:40:14,956 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-24 22:40:14,957 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:40:14,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:40:14,957 INFO L82 PathProgramCache]: Analyzing trace with hash -387134248, now seen corresponding path program 1 times [2020-09-24 22:40:14,957 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:40:14,957 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [779529151] [2020-09-24 22:40:14,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:40:14,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:14,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:14,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:15,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:15,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:15,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:15,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:15,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:16,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:16,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:17,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:19,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:19,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-24 22:40:19,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-24 22:40:19,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-24 22:40:19,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:19,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 22:40:19,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 22:40:19,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 22:40:19,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:40:19,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:40:19,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:19,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:19,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:19,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:40:19,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:40:19,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 22:40:19,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:19,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:40:19,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:40:19,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:40:19,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:40:19,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 22:40:19,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:19,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:20,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:20,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:20,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:20,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:20,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:20,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:22,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:22,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking...