/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --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/id_o100.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 11:09:13,964 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 11:09:13,968 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 11:09:14,009 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 11:09:14,009 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 11:09:14,017 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 11:09:14,019 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 11:09:14,022 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 11:09:14,025 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 11:09:14,028 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 11:09:14,029 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 11:09:14,030 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 11:09:14,031 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 11:09:14,033 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 11:09:14,036 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 11:09:14,038 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 11:09:14,039 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 11:09:14,040 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 11:09:14,041 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 11:09:14,049 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 11:09:14,052 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 11:09:14,053 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 11:09:14,054 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 11:09:14,055 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 11:09:14,067 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 11:09:14,068 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 11:09:14,068 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 11:09:14,075 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 11:09:14,075 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 11:09:14,079 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 11:09:14,079 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 11:09:14,080 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 11:09:14,083 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 11:09:14,084 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 11:09:14,086 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 11:09:14,087 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 11:09:14,087 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 11:09:14,088 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 11:09:14,088 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 11:09:14,089 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 11:09:14,090 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 11:09:14,091 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 11:09:14,137 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 11:09:14,137 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 11:09:14,140 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 11:09:14,140 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 11:09:14,140 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 11:09:14,140 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 11:09:14,141 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 11:09:14,141 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 11:09:14,141 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 11:09:14,141 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 11:09:14,142 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 11:09:14,143 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 11:09:14,143 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 11:09:14,143 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 11:09:14,143 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 11:09:14,144 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 11:09:14,144 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 11:09:14,144 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 11:09:14,144 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 11:09:14,144 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 11:09:14,145 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 11:09:14,145 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 11:09:14,145 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 11:09:14,145 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 11:09:14,145 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 11:09:14,146 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 11:09:14,146 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 11:09:14,146 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 11:09:14,146 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 11:09:14,146 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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; [2020-09-25 11:09:14,625 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 11:09:14,650 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 11:09:14,658 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 11:09:14,660 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 11:09:14,662 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 11:09:14,663 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/id_o100.c [2020-09-25 11:09:14,755 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/89738eb15/d91d9dde7be344da9a9b3850a5165474/FLAGe293015c1 [2020-09-25 11:09:15,272 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 11:09:15,273 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/id_o100.c [2020-09-25 11:09:15,282 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/89738eb15/d91d9dde7be344da9a9b3850a5165474/FLAGe293015c1 [2020-09-25 11:09:15,614 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/89738eb15/d91d9dde7be344da9a9b3850a5165474 [2020-09-25 11:09:15,629 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 11:09:15,635 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 11:09:15,636 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 11:09:15,636 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 11:09:15,641 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 11:09:15,642 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:09:15" (1/1) ... [2020-09-25 11:09:15,647 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ee2931e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:09:15, skipping insertion in model container [2020-09-25 11:09:15,647 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:09:15" (1/1) ... [2020-09-25 11:09:15,656 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 11:09:15,680 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 11:09:15,875 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:09:15,880 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 11:09:15,895 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:09:15,910 INFO L208 MainTranslator]: Completed translation [2020-09-25 11:09:15,911 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:09:15 WrapperNode [2020-09-25 11:09:15,911 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 11:09:15,912 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 11:09:15,912 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 11:09:15,912 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 11:09:15,929 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:09:15" (1/1) ... [2020-09-25 11:09:15,929 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:09:15" (1/1) ... [2020-09-25 11:09:15,935 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:09:15" (1/1) ... [2020-09-25 11:09:15,935 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:09:15" (1/1) ... [2020-09-25 11:09:15,938 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:09:15" (1/1) ... [2020-09-25 11:09:15,941 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:09:15" (1/1) ... [2020-09-25 11:09:15,942 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:09:15" (1/1) ... [2020-09-25 11:09:15,943 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 11:09:15,944 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 11:09:15,944 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 11:09:15,944 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 11:09:15,945 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:09:15" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 11:09:16,113 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 11:09:16,114 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 11:09:16,114 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2020-09-25 11:09:16,114 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 11:09:16,114 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-09-25 11:09:16,114 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 11:09:16,114 INFO L130 BoogieDeclarations]: Found specification of procedure id [2020-09-25 11:09:16,115 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 11:09:16,115 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 11:09:16,115 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 11:09:16,298 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 11:09:16,298 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 11:09:16,303 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:09:16 BoogieIcfgContainer [2020-09-25 11:09:16,303 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 11:09:16,314 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 11:09:16,314 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 11:09:16,319 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 11:09:16,319 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 11:09:15" (1/3) ... [2020-09-25 11:09:16,321 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e459d05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:09:16, skipping insertion in model container [2020-09-25 11:09:16,321 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:09:15" (2/3) ... [2020-09-25 11:09:16,322 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e459d05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:09:16, skipping insertion in model container [2020-09-25 11:09:16,322 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:09:16" (3/3) ... [2020-09-25 11:09:16,325 INFO L109 eAbstractionObserver]: Analyzing ICFG id_o100.c [2020-09-25 11:09:16,355 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 11:09:16,370 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 11:09:16,411 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 11:09:16,443 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 11:09:16,443 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 11:09:16,443 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 11:09:16,444 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 11:09:16,444 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 11:09:16,444 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 11:09:16,444 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 11:09:16,444 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 11:09:16,467 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-09-25 11:09:16,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-25 11:09:16,475 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:09:16,477 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:09:16,477 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:09:16,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:09:16,485 INFO L82 PathProgramCache]: Analyzing trace with hash -1651991454, now seen corresponding path program 1 times [2020-09-25 11:09:16,493 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:09:16,494 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1533126810] [2020-09-25 11:09:16,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:09:16,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:16,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:16,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:16,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:09:16,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:16,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-09-25 11:09:16,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:16,697 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:16,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:09:16,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 11:09:16,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 11:09:16,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 11:09:16,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:09:16,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:16,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:16,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:16,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:09:16,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:16,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 11:09:16,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:16,794 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:16,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:09:16,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:16,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:09:16,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:16,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 11:09:16,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:16,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:16,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:16,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:09:16,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:16,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 11:09:16,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:16,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:16,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 11:09:16,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:16,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 11:09:16,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:16,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:09:16,868 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1533126810] [2020-09-25 11:09:16,870 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:09:16,870 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 11:09:16,871 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762626982] [2020-09-25 11:09:16,877 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 11:09:16,877 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:09:16,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 11:09:16,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:09:16,894 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 5 states. [2020-09-25 11:09:16,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:09:16,984 INFO L93 Difference]: Finished difference Result 37 states and 40 transitions. [2020-09-25 11:09:16,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 11:09:16,986 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-25 11:09:16,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:09:17,003 INFO L225 Difference]: With dead ends: 37 [2020-09-25 11:09:17,003 INFO L226 Difference]: Without dead ends: 22 [2020-09-25 11:09:17,008 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 11:09:17,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-09-25 11:09:17,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-09-25 11:09:17,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-09-25 11:09:17,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2020-09-25 11:09:17,060 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 16 [2020-09-25 11:09:17,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:09:17,060 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2020-09-25 11:09:17,061 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 11:09:17,061 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2020-09-25 11:09:17,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-25 11:09:17,063 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:09:17,063 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] [2020-09-25 11:09:17,064 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 11:09:17,064 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:09:17,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:09:17,065 INFO L82 PathProgramCache]: Analyzing trace with hash 189324707, now seen corresponding path program 1 times [2020-09-25 11:09:17,065 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:09:17,065 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1544312683] [2020-09-25 11:09:17,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:09:17,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:17,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:17,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:17,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 11:09:17,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:17,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 241 [2020-09-25 11:09:17,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:17,328 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:17,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:09:17,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 11:09:17,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 11:09:17,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:17,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:09:17,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:17,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:17,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:17,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:09:17,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:17,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 11:09:17,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:17,414 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:17,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:09:17,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:17,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:09:17,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:17,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 11:09:17,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:17,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:17,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:17,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 11:09:17,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:17,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-09-25 11:09:17,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:17,495 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:17,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:09:17,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:17,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 11:09:17,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:17,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:17,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:17,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:17,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:17,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:09:17,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:17,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 11:09:17,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:17,564 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:17,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 11:09:17,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:17,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 11:09:17,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:17,592 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 11:09:17,592 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1544312683] [2020-09-25 11:09:17,593 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:09:17,593 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 11:09:17,593 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800055555] [2020-09-25 11:09:17,596 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 11:09:17,596 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:09:17,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 11:09:17,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 11:09:17,597 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand 7 states. [2020-09-25 11:09:17,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:09:17,667 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2020-09-25 11:09:17,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 11:09:17,668 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-09-25 11:09:17,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:09:17,669 INFO L225 Difference]: With dead ends: 31 [2020-09-25 11:09:17,669 INFO L226 Difference]: Without dead ends: 26 [2020-09-25 11:09:17,671 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 11:09:17,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-09-25 11:09:17,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-09-25 11:09:17,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-09-25 11:09:17,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2020-09-25 11:09:17,678 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 23 [2020-09-25 11:09:17,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:09:17,679 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2020-09-25 11:09:17,679 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 11:09:17,679 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2020-09-25 11:09:17,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-09-25 11:09:17,681 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:09:17,681 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] [2020-09-25 11:09:17,681 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 11:09:17,682 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:09:17,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:09:17,682 INFO L82 PathProgramCache]: Analyzing trace with hash -1416732684, now seen corresponding path program 2 times [2020-09-25 11:09:17,683 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:09:17,683 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1365246344] [2020-09-25 11:09:17,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:09:17,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:17,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:17,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:17,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-25 11:09:17,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:17,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 264 [2020-09-25 11:09:17,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:17,964 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:17,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 11:09:17,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-09-25 11:09:17,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 11:09:17,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:18,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:09:18,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:18,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:18,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:18,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:09:18,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:18,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 11:09:18,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:18,035 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:18,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:09:18,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:18,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:09:18,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:18,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 11:09:18,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:18,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:18,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:18,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 11:09:18,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:18,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-09-25 11:09:18,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:18,187 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:18,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 11:09:18,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:18,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 11:09:18,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:18,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:18,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:18,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:18,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:18,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 11:09:18,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:18,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-09-25 11:09:18,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:18,299 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:18,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:09:18,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:18,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 11:09:18,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 11:09:18,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:18,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:18,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:18,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:18,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:09:18,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:18,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 11:09:18,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:18,383 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:18,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 11:09:18,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:18,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 11:09:18,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:18,413 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 11:09:18,414 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1365246344] [2020-09-25 11:09:18,416 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:09:18,416 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 11:09:18,416 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524443668] [2020-09-25 11:09:18,417 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 11:09:18,417 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:09:18,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 11:09:18,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-09-25 11:09:18,419 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand 9 states. [2020-09-25 11:09:18,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:09:18,513 INFO L93 Difference]: Finished difference Result 35 states and 36 transitions. [2020-09-25 11:09:18,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 11:09:18,514 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 30 [2020-09-25 11:09:18,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:09:18,516 INFO L225 Difference]: With dead ends: 35 [2020-09-25 11:09:18,516 INFO L226 Difference]: Without dead ends: 30 [2020-09-25 11:09:18,516 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-09-25 11:09:18,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-25 11:09:18,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-09-25 11:09:18,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-09-25 11:09:18,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2020-09-25 11:09:18,523 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 30 [2020-09-25 11:09:18,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:09:18,524 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2020-09-25 11:09:18,524 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 11:09:18,524 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2020-09-25 11:09:18,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-09-25 11:09:18,525 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:09:18,526 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:09:18,526 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 11:09:18,526 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:09:18,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:09:18,527 INFO L82 PathProgramCache]: Analyzing trace with hash -209476043, now seen corresponding path program 3 times [2020-09-25 11:09:18,527 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:09:18,527 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1659920879] [2020-09-25 11:09:18,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:09:18,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:18,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:18,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:18,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-25 11:09:18,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:18,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 255 [2020-09-25 11:09:18,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:18,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:18,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 11:09:18,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-09-25 11:09:18,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 11:09:18,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:18,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:09:18,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:18,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:18,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:18,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:09:18,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:18,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 11:09:18,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:18,858 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:18,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:09:18,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:18,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:09:18,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:18,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 11:09:18,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:18,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:19,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:19,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 11:09:19,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:19,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 169 [2020-09-25 11:09:19,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:19,044 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:19,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 11:09:19,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:19,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 11:09:19,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 11:09:19,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:19,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:19,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:19,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:19,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 11:09:19,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:19,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-09-25 11:09:19,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:19,234 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:19,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 11:09:19,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:19,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 11:09:19,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:19,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:19,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:19,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:19,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:19,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 11:09:19,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:19,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-25 11:09:19,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:19,335 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:19,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:09:19,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:19,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 11:09:19,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:19,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:19,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:19,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:19,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:19,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:09:19,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:19,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 11:09:19,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:19,400 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:19,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 11:09:19,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:19,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 11:09:19,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:19,430 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-09-25 11:09:19,430 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1659920879] [2020-09-25 11:09:19,431 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:09:19,431 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 11:09:19,431 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47095215] [2020-09-25 11:09:19,432 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 11:09:19,432 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:09:19,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 11:09:19,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-09-25 11:09:19,433 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand 11 states. [2020-09-25 11:09:19,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:09:19,591 INFO L93 Difference]: Finished difference Result 39 states and 40 transitions. [2020-09-25 11:09:19,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 11:09:19,592 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 37 [2020-09-25 11:09:19,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:09:19,593 INFO L225 Difference]: With dead ends: 39 [2020-09-25 11:09:19,593 INFO L226 Difference]: Without dead ends: 34 [2020-09-25 11:09:19,595 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2020-09-25 11:09:19,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-09-25 11:09:19,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2020-09-25 11:09:19,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-09-25 11:09:19,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 35 transitions. [2020-09-25 11:09:19,607 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 35 transitions. Word has length 37 [2020-09-25 11:09:19,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:09:19,607 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 35 transitions. [2020-09-25 11:09:19,608 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 11:09:19,608 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 35 transitions. [2020-09-25 11:09:19,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-09-25 11:09:19,611 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:09:19,611 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:09:19,611 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 11:09:19,611 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:09:19,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:09:19,612 INFO L82 PathProgramCache]: Analyzing trace with hash 1007399302, now seen corresponding path program 4 times [2020-09-25 11:09:19,612 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:09:19,612 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [735503322] [2020-09-25 11:09:19,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:09:19,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:19,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:19,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:19,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 11:09:19,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:19,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 301 [2020-09-25 11:09:19,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:19,936 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:19,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 11:09:19,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-09-25 11:09:19,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 11:09:19,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:19,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:09:19,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:19,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:19,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:19,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:09:19,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:19,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 11:09:19,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:19,987 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:19,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:09:19,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:19,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:09:19,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:19,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 11:09:19,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:20,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:20,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:20,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 11:09:20,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:20,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 208 [2020-09-25 11:09:20,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:20,207 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:20,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 11:09:20,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:20,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 11:09:20,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:20,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:20,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:20,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:20,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:20,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 11:09:20,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:20,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-09-25 11:09:20,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:20,381 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:20,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 11:09:20,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:20,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 11:09:20,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:20,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:20,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:20,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:20,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:20,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 11:09:20,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:20,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-09-25 11:09:20,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:20,512 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:20,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 11:09:20,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:20,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 11:09:20,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:20,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:20,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:20,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:20,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:20,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 11:09:20,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:20,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-25 11:09:20,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:20,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:20,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:09:20,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:20,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 11:09:20,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:20,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:20,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:20,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:20,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:20,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:09:20,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:20,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 11:09:20,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:20,659 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:20,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 11:09:20,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:20,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 11:09:20,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:20,686 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-09-25 11:09:20,686 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [735503322] [2020-09-25 11:09:20,686 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:09:20,687 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 11:09:20,687 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212409199] [2020-09-25 11:09:20,688 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 11:09:20,688 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:09:20,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 11:09:20,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-09-25 11:09:20,689 INFO L87 Difference]: Start difference. First operand 34 states and 35 transitions. Second operand 13 states. [2020-09-25 11:09:20,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:09:20,859 INFO L93 Difference]: Finished difference Result 43 states and 44 transitions. [2020-09-25 11:09:20,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 11:09:20,860 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 44 [2020-09-25 11:09:20,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:09:20,861 INFO L225 Difference]: With dead ends: 43 [2020-09-25 11:09:20,861 INFO L226 Difference]: Without dead ends: 38 [2020-09-25 11:09:20,862 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2020-09-25 11:09:20,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-09-25 11:09:20,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-09-25 11:09:20,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-09-25 11:09:20,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 39 transitions. [2020-09-25 11:09:20,869 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 39 transitions. Word has length 44 [2020-09-25 11:09:20,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:09:20,869 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 39 transitions. [2020-09-25 11:09:20,869 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 11:09:20,870 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 39 transitions. [2020-09-25 11:09:20,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-25 11:09:20,871 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:09:20,871 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:09:20,871 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 11:09:20,872 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:09:20,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:09:20,872 INFO L82 PathProgramCache]: Analyzing trace with hash -1787659065, now seen corresponding path program 5 times [2020-09-25 11:09:20,872 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:09:20,873 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [227693871] [2020-09-25 11:09:20,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:09:20,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:20,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:21,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:21,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-09-25 11:09:21,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:21,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 371 [2020-09-25 11:09:21,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:21,257 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:21,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 11:09:21,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-25 11:09:21,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 11:09:21,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:21,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:09:21,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:21,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:21,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:21,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:09:21,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:21,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 11:09:21,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:21,316 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:21,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:09:21,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:21,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:09:21,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:21,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 11:09:21,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:21,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:21,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:21,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 11:09:21,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:21,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 309 [2020-09-25 11:09:21,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:21,640 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:21,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 11:09:21,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:21,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 11:09:21,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:21,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:21,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:21,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:21,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:21,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 11:09:21,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:21,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 210 [2020-09-25 11:09:21,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:21,909 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:21,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 11:09:21,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:21,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 11:09:21,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:21,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:21,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:21,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:22,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:22,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 11:09:22,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:22,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-09-25 11:09:22,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:22,121 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:22,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 11:09:22,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:22,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 11:09:22,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:22,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:22,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:22,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:22,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:22,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 11:09:22,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:22,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-09-25 11:09:22,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:22,248 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:22,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 11:09:22,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:22,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 11:09:22,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:22,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:22,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:22,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:22,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:22,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 11:09:22,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:22,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-25 11:09:22,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:22,354 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:22,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:09:22,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:22,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 11:09:22,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:22,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:22,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:22,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:22,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:22,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:09:22,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:22,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 11:09:22,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:22,421 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:22,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 11:09:22,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:22,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 11:09:22,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:22,460 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-09-25 11:09:22,460 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [227693871] [2020-09-25 11:09:22,460 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:09:22,461 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 11:09:22,461 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102157455] [2020-09-25 11:09:22,461 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 11:09:22,462 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:09:22,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 11:09:22,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2020-09-25 11:09:22,462 INFO L87 Difference]: Start difference. First operand 38 states and 39 transitions. Second operand 15 states. [2020-09-25 11:09:22,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:09:22,785 INFO L93 Difference]: Finished difference Result 47 states and 48 transitions. [2020-09-25 11:09:22,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-25 11:09:22,786 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 51 [2020-09-25 11:09:22,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:09:22,788 INFO L225 Difference]: With dead ends: 47 [2020-09-25 11:09:22,788 INFO L226 Difference]: Without dead ends: 42 [2020-09-25 11:09:22,790 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=369, Unknown=0, NotChecked=0, Total=420 [2020-09-25 11:09:22,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-25 11:09:22,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-09-25 11:09:22,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 11:09:22,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 43 transitions. [2020-09-25 11:09:22,806 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 43 transitions. Word has length 51 [2020-09-25 11:09:22,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:09:22,807 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 43 transitions. [2020-09-25 11:09:22,807 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 11:09:22,807 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 43 transitions. [2020-09-25 11:09:22,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-09-25 11:09:22,813 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:09:22,813 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:09:22,813 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 11:09:22,815 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:09:22,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:09:22,815 INFO L82 PathProgramCache]: Analyzing trace with hash -1360883432, now seen corresponding path program 6 times [2020-09-25 11:09:22,816 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:09:22,816 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [4413880] [2020-09-25 11:09:22,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:09:22,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:22,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:23,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:23,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 11:09:23,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:23,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 541 [2020-09-25 11:09:23,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:23,379 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:23,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 11:09:23,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-09-25 11:09:23,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 11:09:23,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:23,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:09:23,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:23,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:23,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:23,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:09:23,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:23,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 11:09:23,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:23,438 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:23,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:09:23,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:23,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:09:23,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:23,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 11:09:23,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:23,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:23,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:23,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-25 11:09:23,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:23,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 378 [2020-09-25 11:09:23,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:23,830 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:23,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 11:09:23,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:23,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-25 11:09:23,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:23,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:23,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:23,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:24,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:24,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 11:09:24,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:24,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 288 [2020-09-25 11:09:24,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:24,165 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:24,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 11:09:24,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:24,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 11:09:24,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:24,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:24,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:24,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:24,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:24,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 11:09:24,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:24,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 219 [2020-09-25 11:09:24,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:24,431 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:24,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 11:09:24,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:24,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 11:09:24,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 11:09:24,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:24,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:24,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:24,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:24,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 11:09:24,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:24,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-09-25 11:09:24,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:24,656 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:24,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 11:09:24,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:24,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 11:09:24,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:24,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:24,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:24,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:24,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:24,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 11:09:24,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:24,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-09-25 11:09:24,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:24,784 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:24,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 11:09:24,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:24,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 11:09:24,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:24,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:24,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:24,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:24,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:24,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 11:09:24,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:24,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-25 11:09:24,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:24,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:24,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:09:24,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:24,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 11:09:24,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:24,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:24,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:24,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:24,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:24,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:09:24,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:24,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 11:09:24,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:24,965 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:24,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 11:09:24,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:24,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 11:09:24,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 11:09:25,024 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-09-25 11:09:25,025 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [4413880] [2020-09-25 11:09:25,025 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:09:25,025 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-25 11:09:25,026 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321066264] [2020-09-25 11:09:25,027 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-25 11:09:25,028 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:09:25,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-25 11:09:25,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2020-09-25 11:09:25,029 INFO L87 Difference]: Start difference. First operand 42 states and 43 transitions. Second operand 17 states. [2020-09-25 11:09:25,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:09:25,409 INFO L93 Difference]: Finished difference Result 51 states and 52 transitions. [2020-09-25 11:09:25,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-09-25 11:09:25,409 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 58 [2020-09-25 11:09:25,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:09:25,412 INFO L225 Difference]: With dead ends: 51 [2020-09-25 11:09:25,413 INFO L226 Difference]: Without dead ends: 46 [2020-09-25 11:09:25,416 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=59, Invalid=493, Unknown=0, NotChecked=0, Total=552 [2020-09-25 11:09:25,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-09-25 11:09:25,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2020-09-25 11:09:25,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-09-25 11:09:25,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 47 transitions. [2020-09-25 11:09:25,427 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 47 transitions. Word has length 58 [2020-09-25 11:09:25,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:09:25,429 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 47 transitions. [2020-09-25 11:09:25,429 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-25 11:09:25,429 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 47 transitions. [2020-09-25 11:09:25,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-09-25 11:09:25,432 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:09:25,433 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:09:25,436 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 11:09:25,436 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:09:25,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:09:25,438 INFO L82 PathProgramCache]: Analyzing trace with hash -807968423, now seen corresponding path program 7 times [2020-09-25 11:09:25,438 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:09:25,438 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [279702227] [2020-09-25 11:09:25,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:09:25,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:25,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:26,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:26,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-25 11:09:26,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:26,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 633 [2020-09-25 11:09:26,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:26,088 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:26,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 11:09:26,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-09-25 11:09:26,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 11:09:26,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:09:26,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:09:26,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:26,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:26,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:26,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:09:26,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:26,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 11:09:26,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:26,141 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:26,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:09:26,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:26,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:09:26,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:26,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 11:09:26,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:26,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:26,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:26,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-25 11:09:26,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:26,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 541 [2020-09-25 11:09:26,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:26,702 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:26,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 11:09:26,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:26,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-25 11:09:26,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:26,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:26,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:26,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:27,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:27,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-25 11:09:27,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:27,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 389 [2020-09-25 11:09:27,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:27,139 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:27,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 11:09:27,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:27,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-25 11:09:27,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:27,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:27,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:27,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:27,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:27,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 11:09:27,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:27,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 281 [2020-09-25 11:09:27,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:27,474 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:27,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 11:09:27,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:27,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 11:09:27,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:27,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:27,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:27,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:27,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:27,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 11:09:27,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:27,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 176 [2020-09-25 11:09:27,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:27,700 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:27,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 11:09:27,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:27,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 11:09:27,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:27,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:27,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:27,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:27,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:27,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 11:09:27,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:27,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-09-25 11:09:27,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:27,870 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:27,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 11:09:27,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:27,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 11:09:27,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:27,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:27,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:27,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:27,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:27,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 11:09:27,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:27,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-09-25 11:09:27,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:27,983 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:27,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 11:09:27,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:27,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 11:09:27,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:28,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:28,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:28,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:28,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:28,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 11:09:28,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:28,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 11:09:28,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:28,076 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:28,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:09:28,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:28,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 11:09:28,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:28,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:28,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:28,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:28,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:28,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:09:28,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:28,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 11:09:28,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:28,158 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:28,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 11:09:28,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:28,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 11:09:28,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:28,208 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2020-09-25 11:09:28,208 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [279702227] [2020-09-25 11:09:28,209 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:09:28,209 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-09-25 11:09:28,209 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894149661] [2020-09-25 11:09:28,209 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-25 11:09:28,210 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:09:28,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-25 11:09:28,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2020-09-25 11:09:28,210 INFO L87 Difference]: Start difference. First operand 46 states and 47 transitions. Second operand 19 states. [2020-09-25 11:09:28,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:09:28,557 INFO L93 Difference]: Finished difference Result 55 states and 56 transitions. [2020-09-25 11:09:28,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-09-25 11:09:28,558 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 65 [2020-09-25 11:09:28,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:09:28,559 INFO L225 Difference]: With dead ends: 55 [2020-09-25 11:09:28,559 INFO L226 Difference]: Without dead ends: 50 [2020-09-25 11:09:28,560 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=67, Invalid=635, Unknown=0, NotChecked=0, Total=702 [2020-09-25 11:09:28,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-09-25 11:09:28,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-09-25 11:09:28,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 11:09:28,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 51 transitions. [2020-09-25 11:09:28,566 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 51 transitions. Word has length 65 [2020-09-25 11:09:28,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:09:28,567 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 51 transitions. [2020-09-25 11:09:28,567 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-09-25 11:09:28,567 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 51 transitions. [2020-09-25 11:09:28,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-09-25 11:09:28,568 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:09:28,569 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:09:28,569 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 11:09:28,569 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:09:28,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:09:28,569 INFO L82 PathProgramCache]: Analyzing trace with hash -705364310, now seen corresponding path program 8 times [2020-09-25 11:09:28,570 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:09:28,570 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [992978176] [2020-09-25 11:09:28,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:09:28,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:28,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:29,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:29,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-09-25 11:09:29,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:29,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 738 [2020-09-25 11:09:29,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:29,325 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:29,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-25 11:09:29,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-09-25 11:09:29,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 11:09:29,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:09:29,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:09:29,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:29,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:29,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:29,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:09:29,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:29,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 11:09:29,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:29,374 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:29,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:09:29,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:29,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:09:29,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:09:29,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 11:09:29,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:29,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:30,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:30,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-25 11:09:30,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:30,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 642 [2020-09-25 11:09:30,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:30,031 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:30,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 11:09:30,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:30,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 11:09:30,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:30,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:30,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:30,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:30,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:30,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-25 11:09:30,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:30,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 474 [2020-09-25 11:09:30,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:30,562 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:30,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 11:09:30,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:30,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-25 11:09:30,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:30,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:30,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:30,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:30,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:30,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-25 11:09:30,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:30,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 340 [2020-09-25 11:09:30,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:30,948 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:30,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 11:09:30,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:30,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-25 11:09:30,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:30,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:30,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:31,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:31,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:31,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 11:09:31,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:31,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 246 [2020-09-25 11:09:31,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:31,246 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:31,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 11:09:31,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:31,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 11:09:31,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:31,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:31,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:31,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:31,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:31,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 11:09:31,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:31,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-09-25 11:09:31,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:31,477 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:31,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 11:09:31,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:31,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 11:09:31,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:31,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:31,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:31,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:31,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:31,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 11:09:31,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:31,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-09-25 11:09:31,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:31,657 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:31,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 11:09:31,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:31,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 11:09:31,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:31,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:31,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:31,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:31,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:31,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 11:09:31,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:31,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-09-25 11:09:31,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:31,774 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:31,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 11:09:31,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:31,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 11:09:31,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:31,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:31,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:31,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:31,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:31,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 11:09:31,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:31,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 11:09:31,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:31,858 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:31,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:09:31,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:31,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 11:09:31,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:31,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:31,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:31,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:31,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:31,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:09:31,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:31,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 11:09:31,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:31,937 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:31,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 11:09:31,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:31,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 11:09:31,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:31,992 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 0 proven. 128 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-09-25 11:09:31,997 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [992978176] [2020-09-25 11:09:31,998 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:09:31,998 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-09-25 11:09:31,998 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235899268] [2020-09-25 11:09:31,999 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-09-25 11:09:32,000 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:09:32,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-09-25 11:09:32,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=381, Unknown=0, NotChecked=0, Total=420 [2020-09-25 11:09:32,000 INFO L87 Difference]: Start difference. First operand 50 states and 51 transitions. Second operand 21 states. [2020-09-25 11:09:32,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:09:32,402 INFO L93 Difference]: Finished difference Result 59 states and 60 transitions. [2020-09-25 11:09:32,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-09-25 11:09:32,403 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 72 [2020-09-25 11:09:32,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:09:32,405 INFO L225 Difference]: With dead ends: 59 [2020-09-25 11:09:32,405 INFO L226 Difference]: Without dead ends: 54 [2020-09-25 11:09:32,406 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=75, Invalid=795, Unknown=0, NotChecked=0, Total=870 [2020-09-25 11:09:32,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-09-25 11:09:32,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-09-25 11:09:32,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-25 11:09:32,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 55 transitions. [2020-09-25 11:09:32,412 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 55 transitions. Word has length 72 [2020-09-25 11:09:32,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:09:32,412 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 55 transitions. [2020-09-25 11:09:32,413 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-09-25 11:09:32,413 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 55 transitions. [2020-09-25 11:09:32,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-09-25 11:09:32,414 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:09:32,414 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:09:32,414 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 11:09:32,414 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:09:32,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:09:32,415 INFO L82 PathProgramCache]: Analyzing trace with hash -1418439701, now seen corresponding path program 9 times [2020-09-25 11:09:32,415 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:09:32,415 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [997823103] [2020-09-25 11:09:32,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:09:32,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:32,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:33,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:33,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-09-25 11:09:33,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:33,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 831 [2020-09-25 11:09:33,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:33,269 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:33,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-25 11:09:33,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 63 [2020-09-25 11:09:33,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 11:09:33,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:09:33,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:09:33,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:33,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:33,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:33,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:09:33,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:33,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 11:09:33,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:33,319 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:33,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:09:33,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:33,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:09:33,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:09:33,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 11:09:33,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:33,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:34,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:34,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-09-25 11:09:34,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:34,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 829 [2020-09-25 11:09:34,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:34,163 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:34,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-25 11:09:34,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:34,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-25 11:09:34,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:34,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:34,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:34,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:34,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:34,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-25 11:09:34,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:34,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 570 [2020-09-25 11:09:34,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:34,798 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:34,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 11:09:34,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:34,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 11:09:34,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:34,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:34,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:34,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:35,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:35,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-25 11:09:35,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:35,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 535 [2020-09-25 11:09:35,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:35,402 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:35,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 11:09:35,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:35,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-25 11:09:35,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:35,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:35,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:35,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:35,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:35,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-25 11:09:35,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:35,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 390 [2020-09-25 11:09:35,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:35,856 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:35,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 11:09:35,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:35,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-25 11:09:35,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:35,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:35,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:35,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:36,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:36,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 11:09:36,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:36,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 277 [2020-09-25 11:09:36,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:36,202 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:36,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 11:09:36,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:36,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 11:09:36,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:36,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:36,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:36,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:36,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:36,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 11:09:36,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:36,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-09-25 11:09:36,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:36,423 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:36,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 11:09:36,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:36,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 11:09:36,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:36,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:36,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:36,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:36,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:36,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 11:09:36,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:36,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-09-25 11:09:36,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:36,590 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:36,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 11:09:36,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:36,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 11:09:36,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:36,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:36,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:36,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:36,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:36,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 11:09:36,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:36,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-09-25 11:09:36,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:36,717 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:36,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 11:09:36,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:36,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 11:09:36,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:36,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:36,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:36,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:36,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:36,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 11:09:36,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:36,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 11:09:36,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:36,811 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:36,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:09:36,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:36,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 11:09:36,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:09:36,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:36,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:36,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:36,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:36,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:09:36,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:36,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 11:09:36,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:36,908 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:36,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 11:09:36,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:36,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 11:09:36,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:36,975 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 0 proven. 162 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2020-09-25 11:09:36,975 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [997823103] [2020-09-25 11:09:36,975 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:09:36,976 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-09-25 11:09:36,976 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242045448] [2020-09-25 11:09:36,977 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-09-25 11:09:36,977 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:09:36,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-09-25 11:09:36,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=463, Unknown=0, NotChecked=0, Total=506 [2020-09-25 11:09:36,978 INFO L87 Difference]: Start difference. First operand 54 states and 55 transitions. Second operand 23 states. [2020-09-25 11:09:37,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:09:37,601 INFO L93 Difference]: Finished difference Result 63 states and 64 transitions. [2020-09-25 11:09:37,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-09-25 11:09:37,601 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 79 [2020-09-25 11:09:37,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:09:37,602 INFO L225 Difference]: With dead ends: 63 [2020-09-25 11:09:37,602 INFO L226 Difference]: Without dead ends: 58 [2020-09-25 11:09:37,604 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=83, Invalid=973, Unknown=0, NotChecked=0, Total=1056 [2020-09-25 11:09:37,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-09-25 11:09:37,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2020-09-25 11:09:37,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-09-25 11:09:37,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 59 transitions. [2020-09-25 11:09:37,619 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 59 transitions. Word has length 79 [2020-09-25 11:09:37,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:09:37,623 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 59 transitions. [2020-09-25 11:09:37,623 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-09-25 11:09:37,623 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 59 transitions. [2020-09-25 11:09:37,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-09-25 11:09:37,626 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:09:37,626 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:09:37,626 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 11:09:37,627 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:09:37,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:09:37,630 INFO L82 PathProgramCache]: Analyzing trace with hash -182126020, now seen corresponding path program 10 times [2020-09-25 11:09:37,630 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:09:37,631 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1868783176] [2020-09-25 11:09:37,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:09:37,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:37,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:38,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:38,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-09-25 11:09:38,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:38,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1228 [2020-09-25 11:09:38,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:38,894 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:38,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-09-25 11:09:38,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-09-25 11:09:38,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 11:09:38,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:09:38,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:09:38,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:38,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:38,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:38,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:09:38,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:38,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 11:09:38,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:38,973 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:38,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:09:38,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:38,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:09:38,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:38,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 11:09:38,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:39,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:40,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:40,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-25 11:09:40,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:40,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1025 [2020-09-25 11:09:40,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:40,023 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:40,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-25 11:09:40,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:40,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-25 11:09:40,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:09:40,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:40,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:40,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:40,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:40,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-09-25 11:09:40,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:40,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 688 [2020-09-25 11:09:40,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:40,760 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:40,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-25 11:09:40,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:40,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-25 11:09:40,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:09:40,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:40,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:40,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:41,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:41,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-25 11:09:41,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:41,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 476 [2020-09-25 11:09:41,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:41,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:41,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 11:09:41,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:41,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 11:09:41,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:09:41,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:41,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:41,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:41,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:41,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-25 11:09:41,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:41,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 448 [2020-09-25 11:09:41,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:41,791 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:41,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 11:09:41,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:41,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-25 11:09:41,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:41,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:41,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:41,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:42,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:42,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-25 11:09:42,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:42,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 331 [2020-09-25 11:09:42,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:42,206 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:42,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 11:09:42,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:42,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-25 11:09:42,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:09:42,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:42,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:42,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:42,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:42,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 11:09:42,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:42,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 196 [2020-09-25 11:09:42,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:42,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:42,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 11:09:42,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:42,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 11:09:42,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:09:42,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:42,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:42,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:42,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:42,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 11:09:42,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:42,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-09-25 11:09:42,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:42,666 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:42,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 11:09:42,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:42,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 11:09:42,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:42,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:42,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:42,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:42,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:42,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 11:09:42,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:42,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-09-25 11:09:42,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:42,821 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:42,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 11:09:42,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:42,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 11:09:42,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:42,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:42,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:42,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:42,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:42,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 11:09:42,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:42,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-09-25 11:09:42,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:42,948 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:42,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 11:09:42,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:42,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 11:09:42,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:43,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:43,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:43,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:43,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:43,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 11:09:43,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:43,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 11:09:43,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:43,050 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:43,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:09:43,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:43,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 11:09:43,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:09:43,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:43,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:43,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:43,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:43,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:09:43,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:43,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 11:09:43,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:43,143 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:43,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 11:09:43,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:43,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 11:09:43,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:43,216 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 0 proven. 200 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2020-09-25 11:09:43,216 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1868783176] [2020-09-25 11:09:43,216 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:09:43,216 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-09-25 11:09:43,217 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164867654] [2020-09-25 11:09:43,217 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-09-25 11:09:43,218 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:09:43,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-09-25 11:09:43,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=553, Unknown=0, NotChecked=0, Total=600 [2020-09-25 11:09:43,219 INFO L87 Difference]: Start difference. First operand 58 states and 59 transitions. Second operand 25 states. [2020-09-25 11:09:43,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:09:43,906 INFO L93 Difference]: Finished difference Result 67 states and 68 transitions. [2020-09-25 11:09:43,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-09-25 11:09:43,906 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 86 [2020-09-25 11:09:43,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:09:43,907 INFO L225 Difference]: With dead ends: 67 [2020-09-25 11:09:43,908 INFO L226 Difference]: Without dead ends: 62 [2020-09-25 11:09:43,910 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=91, Invalid=1169, Unknown=0, NotChecked=0, Total=1260 [2020-09-25 11:09:43,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-09-25 11:09:43,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2020-09-25 11:09:43,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-09-25 11:09:43,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 63 transitions. [2020-09-25 11:09:43,917 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 63 transitions. Word has length 86 [2020-09-25 11:09:43,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:09:43,918 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 63 transitions. [2020-09-25 11:09:43,918 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-09-25 11:09:43,918 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 63 transitions. [2020-09-25 11:09:43,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-09-25 11:09:43,919 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:09:43,919 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:09:43,919 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 11:09:43,920 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:09:43,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:09:43,920 INFO L82 PathProgramCache]: Analyzing trace with hash 1527469181, now seen corresponding path program 11 times [2020-09-25 11:09:43,920 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:09:43,920 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [274281967] [2020-09-25 11:09:43,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:09:43,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:43,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:44,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:44,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-09-25 11:09:44,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:44,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1022 [2020-09-25 11:09:44,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:44,959 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:44,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-09-25 11:09:44,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-09-25 11:09:44,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 11:09:44,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:09:45,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:09:45,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:45,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:45,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:45,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:09:45,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:45,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 11:09:45,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:45,011 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:45,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:09:45,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:45,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:09:45,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:09:45,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 11:09:45,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:45,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:46,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:46,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-09-25 11:09:46,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:46,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1007 [2020-09-25 11:09:46,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:46,032 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:46,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-09-25 11:09:46,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:46,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-09-25 11:09:46,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:09:46,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:46,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:46,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:46,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:46,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-25 11:09:46,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:46,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 754 [2020-09-25 11:09:46,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:46,838 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:46,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-25 11:09:46,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:46,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-25 11:09:46,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:09:46,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:46,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:46,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:47,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:47,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-09-25 11:09:47,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:47,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 601 [2020-09-25 11:09:47,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:47,497 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:47,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-25 11:09:47,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:47,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-25 11:09:47,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:09:47,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:47,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:47,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:48,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:48,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-25 11:09:48,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:48,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 468 [2020-09-25 11:09:48,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:48,024 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:48,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 11:09:48,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:48,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 11:09:48,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:09:48,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:48,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:48,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:48,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:48,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-25 11:09:48,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:48,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 353 [2020-09-25 11:09:48,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:48,443 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:48,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 11:09:48,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:48,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-25 11:09:48,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:09:48,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:48,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:48,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:48,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:48,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-25 11:09:48,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:48,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 268 [2020-09-25 11:09:48,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:48,773 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:48,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 11:09:48,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:48,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-25 11:09:48,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:09:48,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:48,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:48,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:49,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:49,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 11:09:49,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:49,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 193 [2020-09-25 11:09:49,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:49,033 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:49,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 11:09:49,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:49,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 11:09:49,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:09:49,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:49,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:49,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:49,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:49,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 11:09:49,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:49,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-09-25 11:09:49,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:49,236 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:49,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 11:09:49,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:49,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 11:09:49,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:09:49,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:49,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:49,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:49,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:49,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 11:09:49,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:49,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-09-25 11:09:49,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:49,397 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:49,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 11:09:49,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:49,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 11:09:49,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:09:49,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:49,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:49,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:49,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:49,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 11:09:49,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:49,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-09-25 11:09:49,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:49,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:49,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 11:09:49,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:49,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 11:09:49,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:09:49,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:49,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:49,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:49,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:49,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 11:09:49,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:49,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-25 11:09:49,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:49,655 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:49,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:09:49,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:49,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 11:09:49,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:49,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:49,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:49,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:49,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:49,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:09:49,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:49,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 11:09:49,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:49,758 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:49,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 11:09:49,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:49,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 11:09:49,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:49,852 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 0 proven. 242 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2020-09-25 11:09:49,853 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [274281967] [2020-09-25 11:09:49,853 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:09:49,853 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-09-25 11:09:49,854 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386782808] [2020-09-25 11:09:49,854 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-09-25 11:09:49,854 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:09:49,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-09-25 11:09:49,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=651, Unknown=0, NotChecked=0, Total=702 [2020-09-25 11:09:49,855 INFO L87 Difference]: Start difference. First operand 62 states and 63 transitions. Second operand 27 states. [2020-09-25 11:09:50,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:09:50,706 INFO L93 Difference]: Finished difference Result 71 states and 72 transitions. [2020-09-25 11:09:50,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-09-25 11:09:50,707 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 93 [2020-09-25 11:09:50,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:09:50,708 INFO L225 Difference]: With dead ends: 71 [2020-09-25 11:09:50,708 INFO L226 Difference]: Without dead ends: 66 [2020-09-25 11:09:50,709 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=99, Invalid=1383, Unknown=0, NotChecked=0, Total=1482 [2020-09-25 11:09:50,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-09-25 11:09:50,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-09-25 11:09:50,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-09-25 11:09:50,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 67 transitions. [2020-09-25 11:09:50,726 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 67 transitions. Word has length 93 [2020-09-25 11:09:50,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:09:50,727 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 67 transitions. [2020-09-25 11:09:50,727 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-09-25 11:09:50,727 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 67 transitions. [2020-09-25 11:09:50,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-09-25 11:09:50,728 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:09:50,729 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:09:50,729 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-25 11:09:50,729 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:09:50,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:09:50,729 INFO L82 PathProgramCache]: Analyzing trace with hash -1034648626, now seen corresponding path program 12 times [2020-09-25 11:09:50,730 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:09:50,730 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [954872800] [2020-09-25 11:09:50,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:09:50,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:50,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:51,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:51,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-09-25 11:09:51,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:51,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1246 [2020-09-25 11:09:51,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:51,997 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:51,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-09-25 11:09:51,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-09-25 11:09:51,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-09-25 11:09:51,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:09:52,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:09:52,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:52,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:52,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:52,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:09:52,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:52,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 11:09:52,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:52,047 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:52,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:09:52,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:52,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:09:52,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:09:52,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 11:09:52,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:52,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:53,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:53,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-09-25 11:09:53,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:53,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1079 [2020-09-25 11:09:53,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:53,140 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:53,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-09-25 11:09:53,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:53,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-09-25 11:09:53,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:09:53,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:53,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:53,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:54,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:54,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-09-25 11:09:54,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:54,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1045 [2020-09-25 11:09:54,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:54,269 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:54,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-09-25 11:09:54,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:54,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-09-25 11:09:54,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:09:54,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:54,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:54,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:55,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:55,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-25 11:09:55,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:55,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 749 [2020-09-25 11:09:55,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:55,074 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:55,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-25 11:09:55,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:55,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-25 11:09:55,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:09:55,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:55,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:55,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:55,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:55,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-09-25 11:09:55,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:55,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 612 [2020-09-25 11:09:55,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:55,746 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:55,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-25 11:09:55,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:55,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-25 11:09:55,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:09:55,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:55,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:55,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:56,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:56,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-25 11:09:56,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:56,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 564 [2020-09-25 11:09:56,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:56,373 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:56,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 11:09:56,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:56,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 11:09:56,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:56,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:56,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:56,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:56,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:56,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-25 11:09:56,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:56,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 499 [2020-09-25 11:09:56,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:56,937 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:56,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 11:09:56,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:56,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-25 11:09:56,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:57,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:57,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:57,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:57,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:57,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-25 11:09:57,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:57,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 283 [2020-09-25 11:09:57,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:57,320 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:57,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 11:09:57,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:57,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-25 11:09:57,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:09:57,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:57,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:57,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:57,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:57,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 11:09:57,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:57,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 184 [2020-09-25 11:09:57,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:57,580 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:57,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 11:09:57,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:57,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 11:09:57,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:09:57,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:57,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:57,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:57,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:57,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 11:09:57,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:57,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-09-25 11:09:57,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:57,776 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:57,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 11:09:57,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:57,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 11:09:57,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:57,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:57,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:57,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:57,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:57,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 11:09:57,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:57,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-09-25 11:09:57,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:57,951 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:57,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 11:09:57,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:57,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 11:09:57,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:09:58,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:58,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:58,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:58,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:58,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 11:09:58,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:58,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-09-25 11:09:58,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:58,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:58,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 11:09:58,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:58,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 11:09:58,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:58,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:58,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:58,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:58,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:58,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 11:09:58,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:58,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 11:09:58,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:58,191 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:58,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:09:58,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:58,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 11:09:58,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:09:58,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:58,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:58,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:58,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:58,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:09:58,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:58,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 11:09:58,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:58,281 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:58,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 11:09:58,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:58,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 11:09:58,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 11:09:58,420 INFO L134 CoverageAnalysis]: Checked inductivity of 510 backedges. 0 proven. 288 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2020-09-25 11:09:58,421 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [954872800] [2020-09-25 11:09:58,421 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:09:58,422 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-09-25 11:09:58,422 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423041935] [2020-09-25 11:09:58,422 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-09-25 11:09:58,423 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:09:58,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-09-25 11:09:58,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=757, Unknown=0, NotChecked=0, Total=812 [2020-09-25 11:09:58,424 INFO L87 Difference]: Start difference. First operand 66 states and 67 transitions. Second operand 29 states. [2020-09-25 11:09:59,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:09:59,318 INFO L93 Difference]: Finished difference Result 75 states and 76 transitions. [2020-09-25 11:09:59,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-09-25 11:09:59,318 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 100 [2020-09-25 11:09:59,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:09:59,319 INFO L225 Difference]: With dead ends: 75 [2020-09-25 11:09:59,319 INFO L226 Difference]: Without dead ends: 70 [2020-09-25 11:09:59,321 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=107, Invalid=1615, Unknown=0, NotChecked=0, Total=1722 [2020-09-25 11:09:59,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-09-25 11:09:59,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2020-09-25 11:09:59,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-09-25 11:09:59,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 71 transitions. [2020-09-25 11:09:59,328 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 71 transitions. Word has length 100 [2020-09-25 11:09:59,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:09:59,329 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 71 transitions. [2020-09-25 11:09:59,329 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-09-25 11:09:59,329 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 71 transitions. [2020-09-25 11:09:59,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-09-25 11:09:59,330 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:09:59,330 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:09:59,330 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-25 11:09:59,330 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:09:59,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:09:59,333 INFO L82 PathProgramCache]: Analyzing trace with hash 996041487, now seen corresponding path program 13 times [2020-09-25 11:09:59,333 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:09:59,333 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2001572536] [2020-09-25 11:09:59,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:09:59,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:59,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:00,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:10:00,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-09-25 11:10:00,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:10:00,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1450 [2020-09-25 11:10:00,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:10:00,802 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:10:00,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-09-25 11:10:00,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-09-25 11:10:00,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-25 11:10:00,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:10:00,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:10:00,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:10:00,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:00,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:10:00,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:10:00,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:10:00,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 11:10:00,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:10:00,849 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:10:00,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:10:00,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:10:00,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:10:00,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:10:00,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 11:10:00,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:10:00,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:02,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:10:02,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-09-25 11:10:02,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:10:02,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1348 [2020-09-25 11:10:02,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:10:02,220 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:10:02,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-09-25 11:10:02,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:10:02,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-09-25 11:10:02,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:10:02,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:10:02,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:10:02,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:03,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:10:03,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-09-25 11:10:03,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:10:03,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1121 [2020-09-25 11:10:03,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:10:03,399 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:10:03,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-09-25 11:10:03,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:10:03,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-09-25 11:10:03,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:10:03,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:10:03,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:10:03,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:04,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:10:04,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-09-25 11:10:04,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:10:04,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 888 [2020-09-25 11:10:04,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:10:04,342 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:10:04,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-09-25 11:10:04,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:10:04,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-09-25 11:10:04,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:10:04,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:10:04,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:10:04,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:05,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:10:05,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-25 11:10:05,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:10:05,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 753 [2020-09-25 11:10:05,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:10:05,169 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:10:05,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-25 11:10:05,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:10:05,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-25 11:10:05,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:10:05,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:10:05,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:10:05,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:05,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:10:05,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-09-25 11:10:05,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:10:05,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 587 [2020-09-25 11:10:05,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:10:05,818 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:10:05,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-25 11:10:05,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:10:05,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-25 11:10:05,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:10:05,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:10:05,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:10:05,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:06,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:10:06,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-25 11:10:06,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:10:06,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 473 [2020-09-25 11:10:06,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:10:06,362 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:10:06,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 11:10:06,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:10:06,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 11:10:06,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:10:06,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:10:06,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:10:06,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:06,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:10:06,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-25 11:10:06,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:10:06,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 374 [2020-09-25 11:10:06,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:10:06,817 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:10:06,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 11:10:06,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:10:06,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-25 11:10:06,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:10:06,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:10:06,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:10:06,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:07,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:10:07,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-25 11:10:07,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:10:07,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 269 [2020-09-25 11:10:07,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:10:07,158 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:10:07,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 11:10:07,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:10:07,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-25 11:10:07,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:10:07,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:10:07,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:10:07,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:07,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:10:07,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 11:10:07,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:10:07,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 194 [2020-09-25 11:10:07,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:10:07,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:10:07,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 11:10:07,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:10:07,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 11:10:07,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:10:07,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:10:07,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:10:07,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:07,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:10:07,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 11:10:07,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:10:07,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-09-25 11:10:07,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:10:07,633 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:10:07,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 11:10:07,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:10:07,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 11:10:07,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:10:07,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:10:07,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:10:07,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:07,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:10:07,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 11:10:07,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:10:07,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-09-25 11:10:07,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:10:07,797 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:10:07,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 11:10:07,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:10:07,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 11:10:07,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:10:07,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:10:07,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:10:07,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:07,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:10:07,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 11:10:07,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:10:07,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-09-25 11:10:07,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:10:07,932 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:10:07,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 11:10:07,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:10:07,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 11:10:07,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:10:08,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:10:08,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:10:08,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:08,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:10:08,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 11:10:08,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:10:08,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 11:10:08,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:10:08,053 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:10:08,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:10:08,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:10:08,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 11:10:08,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:10:08,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:10:08,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:10:08,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:08,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:10:08,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:10:08,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:10:08,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 11:10:08,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:10:08,162 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:10:08,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 11:10:08,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:10:08,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 11:10:08,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:10:08,255 INFO L134 CoverageAnalysis]: Checked inductivity of 598 backedges. 0 proven. 338 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2020-09-25 11:10:08,255 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2001572536] [2020-09-25 11:10:08,256 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:10:08,256 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-09-25 11:10:08,256 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035837766] [2020-09-25 11:10:08,256 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-09-25 11:10:08,257 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:10:08,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-09-25 11:10:08,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=871, Unknown=0, NotChecked=0, Total=930 [2020-09-25 11:10:08,258 INFO L87 Difference]: Start difference. First operand 70 states and 71 transitions. Second operand 31 states. [2020-09-25 11:10:09,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:10:09,358 INFO L93 Difference]: Finished difference Result 79 states and 80 transitions. [2020-09-25 11:10:09,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-09-25 11:10:09,364 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 107 [2020-09-25 11:10:09,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:10:09,365 INFO L225 Difference]: With dead ends: 79 [2020-09-25 11:10:09,365 INFO L226 Difference]: Without dead ends: 74 [2020-09-25 11:10:09,366 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=115, Invalid=1865, Unknown=0, NotChecked=0, Total=1980 [2020-09-25 11:10:09,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-09-25 11:10:09,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2020-09-25 11:10:09,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-09-25 11:10:09,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 75 transitions. [2020-09-25 11:10:09,375 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 75 transitions. Word has length 107 [2020-09-25 11:10:09,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:10:09,375 INFO L479 AbstractCegarLoop]: Abstraction has 74 states and 75 transitions. [2020-09-25 11:10:09,375 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-09-25 11:10:09,375 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 75 transitions. [2020-09-25 11:10:09,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-09-25 11:10:09,379 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:10:09,380 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:10:09,380 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-25 11:10:09,380 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:10:09,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:10:09,380 INFO L82 PathProgramCache]: Analyzing trace with hash 1701157728, now seen corresponding path program 14 times [2020-09-25 11:10:09,381 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:10:09,381 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1250816371] [2020-09-25 11:10:09,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:10:09,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:10:09,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking...