/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 SequenceOfStatements --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 --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-examples/standard_compareModified_ground.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 17:47:47,011 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 17:47:47,013 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 17:47:47,038 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 17:47:47,038 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 17:47:47,039 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 17:47:47,041 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 17:47:47,042 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 17:47:47,044 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 17:47:47,045 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 17:47:47,046 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 17:47:47,047 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 17:47:47,048 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 17:47:47,049 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 17:47:47,050 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 17:47:47,051 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 17:47:47,052 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 17:47:47,053 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 17:47:47,054 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 17:47:47,056 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 17:47:47,058 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 17:47:47,059 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 17:47:47,060 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 17:47:47,061 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 17:47:47,063 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 17:47:47,063 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 17:47:47,064 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 17:47:47,064 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 17:47:47,065 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 17:47:47,066 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 17:47:47,066 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 17:47:47,067 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 17:47:47,067 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 17:47:47,068 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 17:47:47,069 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 17:47:47,069 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 17:47:47,070 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 17:47:47,070 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 17:47:47,071 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 17:47:47,071 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 17:47:47,072 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 17:47:47,073 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 [2020-10-14 17:47:47,110 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 17:47:47,111 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 17:47:47,112 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 17:47:47,112 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 17:47:47,112 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 17:47:47,113 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 17:47:47,113 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 17:47:47,113 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 17:47:47,113 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 17:47:47,113 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 17:47:47,114 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 17:47:47,114 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 17:47:47,114 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 17:47:47,114 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 17:47:47,114 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 17:47:47,115 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 17:47:47,115 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 17:47:47,115 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 17:47:47,115 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 17:47:47,115 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 17:47:47,116 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 17:47:47,116 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 17:47:47,116 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 17:47:47,116 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 17:47:47,116 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 17:47:47,117 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 17:47:47,117 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 17:47:47,117 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 17:47:47,117 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 17:47:47,117 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 -> SequenceOfStatements 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;unknown-allowed=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;unknown-allowed=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;unknown-allowed=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;unknown-allowed=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;unknown-allowed=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;unknown-allowed=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;unknown-allowed=true; [2020-10-14 17:47:47,412 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 17:47:47,431 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 17:47:47,438 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 17:47:47,441 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 17:47:47,443 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 17:47:47,444 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_compareModified_ground.i [2020-10-14 17:47:47,504 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5467aabb7/56399d8ecbb84131afda602a871260aa/FLAG84235d0fe [2020-10-14 17:47:47,902 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 17:47:47,903 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-examples/standard_compareModified_ground.i [2020-10-14 17:47:47,910 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5467aabb7/56399d8ecbb84131afda602a871260aa/FLAG84235d0fe [2020-10-14 17:47:48,293 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5467aabb7/56399d8ecbb84131afda602a871260aa [2020-10-14 17:47:48,301 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 17:47:48,303 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 17:47:48,305 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 17:47:48,305 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 17:47:48,309 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 17:47:48,310 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 05:47:48" (1/1) ... [2020-10-14 17:47:48,314 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57916dbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:47:48, skipping insertion in model container [2020-10-14 17:47:48,315 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 05:47:48" (1/1) ... [2020-10-14 17:47:48,324 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 17:47:48,345 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 17:47:48,522 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 17:47:48,527 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 17:47:48,554 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 17:47:48,575 INFO L208 MainTranslator]: Completed translation [2020-10-14 17:47:48,575 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:47:48 WrapperNode [2020-10-14 17:47:48,575 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 17:47:48,576 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 17:47:48,576 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 17:47:48,576 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 17:47:48,676 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:47:48" (1/1) ... [2020-10-14 17:47:48,676 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:47:48" (1/1) ... [2020-10-14 17:47:48,685 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:47:48" (1/1) ... [2020-10-14 17:47:48,685 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:47:48" (1/1) ... [2020-10-14 17:47:48,694 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:47:48" (1/1) ... [2020-10-14 17:47:48,700 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:47:48" (1/1) ... [2020-10-14 17:47:48,702 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:47:48" (1/1) ... [2020-10-14 17:47:48,705 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 17:47:48,705 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 17:47:48,705 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 17:47:48,706 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 17:47:48,707 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:47:48" (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 [2020-10-14 17:47:48,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 17:47:48,781 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 17:47:48,781 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-14 17:47:48,781 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 17:47:48,781 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 17:47:48,781 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-14 17:47:48,781 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 17:47:48,782 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 17:47:48,782 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-14 17:47:48,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-14 17:47:48,782 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-14 17:47:48,782 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 17:47:48,782 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 17:47:48,783 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 17:47:49,073 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 17:47:49,074 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-14 17:47:49,079 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 05:47:49 BoogieIcfgContainer [2020-10-14 17:47:49,079 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 17:47:49,080 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 17:47:49,081 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 17:47:49,084 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 17:47:49,084 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 05:47:48" (1/3) ... [2020-10-14 17:47:49,085 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c765aef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 05:47:49, skipping insertion in model container [2020-10-14 17:47:49,085 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:47:48" (2/3) ... [2020-10-14 17:47:49,086 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c765aef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 05:47:49, skipping insertion in model container [2020-10-14 17:47:49,086 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 05:47:49" (3/3) ... [2020-10-14 17:47:49,088 INFO L109 eAbstractionObserver]: Analyzing ICFG standard_compareModified_ground.i [2020-10-14 17:47:49,099 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 17:47:49,107 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 17:47:49,135 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 17:47:49,172 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 17:47:49,172 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 17:47:49,173 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 17:47:49,173 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 17:47:49,173 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 17:47:49,173 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 17:47:49,173 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 17:47:49,173 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 17:47:49,194 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-10-14 17:47:49,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-14 17:47:49,201 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:47:49,203 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:47:49,203 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:47:49,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:47:49,209 INFO L82 PathProgramCache]: Analyzing trace with hash 1992705634, now seen corresponding path program 1 times [2020-10-14 17:47:49,217 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:47:49,217 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1628792366] [2020-10-14 17:47:49,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:47:49,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:47:49,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:47:49,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:47:49,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:47:49,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-14 17:47:49,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:47:49,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-10-14 17:47:49,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:47:49,496 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:47:49,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:47:49,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 17:47:49,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:47:49,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 17:47:49,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:47:49,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:47:49,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:47:49,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:47:49,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:47:49,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:47:49,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 17:47:49,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:47:49,571 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:47:49,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:47:49,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:47:49,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:47:49,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 17:47:49,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 17:47:49,583 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1628792366] [2020-10-14 17:47:49,586 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 17:47:49,587 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 17:47:49,588 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069206065] [2020-10-14 17:47:49,593 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 17:47:49,594 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:47:49,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 17:47:49,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 17:47:49,614 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 3 states. [2020-10-14 17:47:49,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:47:49,746 INFO L93 Difference]: Finished difference Result 58 states and 80 transitions. [2020-10-14 17:47:49,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 17:47:49,748 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-10-14 17:47:49,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:47:49,768 INFO L225 Difference]: With dead ends: 58 [2020-10-14 17:47:49,769 INFO L226 Difference]: Without dead ends: 28 [2020-10-14 17:47:49,773 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 17:47:49,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-14 17:47:49,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-10-14 17:47:49,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-14 17:47:49,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2020-10-14 17:47:49,813 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 34 transitions. Word has length 15 [2020-10-14 17:47:49,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:47:49,814 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 34 transitions. [2020-10-14 17:47:49,814 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 17:47:49,814 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2020-10-14 17:47:49,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-14 17:47:49,815 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:47:49,816 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:47:49,816 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 17:47:49,816 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:47:49,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:47:49,817 INFO L82 PathProgramCache]: Analyzing trace with hash -2038513977, now seen corresponding path program 1 times [2020-10-14 17:47:49,817 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:47:49,818 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1231139032] [2020-10-14 17:47:49,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:47:49,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:47:49,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:47:49,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:47:50,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:47:50,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-14 17:47:50,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:47:50,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 190 [2020-10-14 17:47:50,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:47:50,031 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:47:50,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:47:50,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 17:47:50,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-14 17:47:50,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:47:50,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:47:50,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:47:50,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:47:50,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:47:50,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:47:50,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:47:50,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 17:47:50,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:47:50,077 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:47:50,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:47:50,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:47:50,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:47:50,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:47:50,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 17:47:50,083 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1231139032] [2020-10-14 17:47:50,084 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 17:47:50,084 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 17:47:50,084 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997655803] [2020-10-14 17:47:50,086 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 17:47:50,087 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:47:50,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 17:47:50,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 17:47:50,088 INFO L87 Difference]: Start difference. First operand 28 states and 34 transitions. Second operand 4 states. [2020-10-14 17:47:50,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:47:50,179 INFO L93 Difference]: Finished difference Result 48 states and 59 transitions. [2020-10-14 17:47:50,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 17:47:50,180 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-10-14 17:47:50,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:47:50,181 INFO L225 Difference]: With dead ends: 48 [2020-10-14 17:47:50,181 INFO L226 Difference]: Without dead ends: 31 [2020-10-14 17:47:50,183 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 17:47:50,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-10-14 17:47:50,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 29. [2020-10-14 17:47:50,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-14 17:47:50,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2020-10-14 17:47:50,192 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 35 transitions. Word has length 15 [2020-10-14 17:47:50,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:47:50,192 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 35 transitions. [2020-10-14 17:47:50,193 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 17:47:50,193 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2020-10-14 17:47:50,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-14 17:47:50,194 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:47:50,194 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:47:50,195 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 17:47:50,195 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:47:50,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:47:50,195 INFO L82 PathProgramCache]: Analyzing trace with hash 1973834535, now seen corresponding path program 1 times [2020-10-14 17:47:50,196 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:47:50,196 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [126883381] [2020-10-14 17:47:50,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:47:50,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:47:50,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:47:50,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:47:50,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:47:50,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:47:50,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 17:47:50,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 17:47:50,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 357 [2020-10-14 17:47:50,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:47:50,569 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:47:50,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:47:50,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 17:47:50,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 17:47:50,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:47:50,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:47:50,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:47:50,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:47:50,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:47:50,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:47:50,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:47:50,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 17:47:50,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:47:50,625 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:47:50,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:47:50,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:47:50,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:47:50,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:47:50,630 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 17:47:50,631 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [126883381] [2020-10-14 17:47:50,631 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 17:47:50,631 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 17:47:50,632 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929664817] [2020-10-14 17:47:50,632 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 17:47:50,632 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:47:50,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 17:47:50,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 17:47:50,633 INFO L87 Difference]: Start difference. First operand 29 states and 35 transitions. Second operand 4 states. [2020-10-14 17:47:50,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:47:50,724 INFO L93 Difference]: Finished difference Result 54 states and 66 transitions. [2020-10-14 17:47:50,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 17:47:50,725 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-10-14 17:47:50,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:47:50,727 INFO L225 Difference]: With dead ends: 54 [2020-10-14 17:47:50,727 INFO L226 Difference]: Without dead ends: 39 [2020-10-14 17:47:50,728 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 17:47:50,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-10-14 17:47:50,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 34. [2020-10-14 17:47:50,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-14 17:47:50,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 42 transitions. [2020-10-14 17:47:50,737 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 42 transitions. Word has length 18 [2020-10-14 17:47:50,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:47:50,738 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 42 transitions. [2020-10-14 17:47:50,738 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 17:47:50,738 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 42 transitions. [2020-10-14 17:47:50,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-14 17:47:50,739 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:47:50,739 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:47:50,740 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 17:47:50,740 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:47:50,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:47:50,740 INFO L82 PathProgramCache]: Analyzing trace with hash 1580807525, now seen corresponding path program 1 times [2020-10-14 17:47:50,741 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:47:50,741 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1868758924] [2020-10-14 17:47:50,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:47:50,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:47:50,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:47:50,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:47:50,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:47:50,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:47:50,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 17:47:50,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 17:47:50,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 193 [2020-10-14 17:47:50,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:47:50,945 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:47:50,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 17:47:50,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 17:47:50,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 17:47:50,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:47:51,184 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 27 [2020-10-14 17:47:51,404 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 41 [2020-10-14 17:47:51,619 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 37 [2020-10-14 17:47:51,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:47:51,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:47:51,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:47:51,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:47:51,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:47:51,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:47:51,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:47:51,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:47:51,742 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:47:51,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:47:51,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:47:51,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:47:51,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:47:51,747 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 17:47:51,747 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1868758924] [2020-10-14 17:47:51,748 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:47:51,748 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 17:47:51,748 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105397002] [2020-10-14 17:47:51,749 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 17:47:51,749 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:47:51,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 17:47:51,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-10-14 17:47:51,750 INFO L87 Difference]: Start difference. First operand 34 states and 42 transitions. Second operand 11 states. [2020-10-14 17:47:52,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:47:52,103 INFO L93 Difference]: Finished difference Result 75 states and 94 transitions. [2020-10-14 17:47:52,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 17:47:52,104 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 18 [2020-10-14 17:47:52,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:47:52,106 INFO L225 Difference]: With dead ends: 75 [2020-10-14 17:47:52,106 INFO L226 Difference]: Without dead ends: 64 [2020-10-14 17:47:52,107 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2020-10-14 17:47:52,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-14 17:47:52,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 45. [2020-10-14 17:47:52,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-14 17:47:52,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 56 transitions. [2020-10-14 17:47:52,119 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 56 transitions. Word has length 18 [2020-10-14 17:47:52,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:47:52,119 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 56 transitions. [2020-10-14 17:47:52,119 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 17:47:52,120 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 56 transitions. [2020-10-14 17:47:52,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-14 17:47:52,120 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:47:52,121 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:47:52,121 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 17:47:52,121 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:47:52,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:47:52,122 INFO L82 PathProgramCache]: Analyzing trace with hash -740641946, now seen corresponding path program 1 times [2020-10-14 17:47:52,122 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:47:52,122 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1251143409] [2020-10-14 17:47:52,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:47:52,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:47:52,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:47:52,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:47:52,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:47:52,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:47:52,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-14 17:47:52,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 17:47:52,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-10-14 17:47:52,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:47:52,292 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:47:52,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 17:47:52,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 17:47:52,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 17:47:52,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:47:52,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:47:52,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:47:52,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:47:52,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:47:52,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:47:52,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:47:52,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:47:52,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:47:52,506 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:47:52,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:47:52,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:47:52,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:47:52,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:47:52,510 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 17:47:52,510 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1251143409] [2020-10-14 17:47:52,511 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:47:52,511 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 17:47:52,511 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522592534] [2020-10-14 17:47:52,512 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 17:47:52,512 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:47:52,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 17:47:52,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-14 17:47:52,513 INFO L87 Difference]: Start difference. First operand 45 states and 56 transitions. Second operand 9 states. [2020-10-14 17:47:52,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:47:52,800 INFO L93 Difference]: Finished difference Result 61 states and 74 transitions. [2020-10-14 17:47:52,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 17:47:52,801 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 19 [2020-10-14 17:47:52,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:47:52,804 INFO L225 Difference]: With dead ends: 61 [2020-10-14 17:47:52,804 INFO L226 Difference]: Without dead ends: 59 [2020-10-14 17:47:52,805 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2020-10-14 17:47:52,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-10-14 17:47:52,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 51. [2020-10-14 17:47:52,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-14 17:47:52,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 62 transitions. [2020-10-14 17:47:52,814 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 62 transitions. Word has length 19 [2020-10-14 17:47:52,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:47:52,815 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 62 transitions. [2020-10-14 17:47:52,815 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 17:47:52,815 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 62 transitions. [2020-10-14 17:47:52,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-14 17:47:52,816 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:47:52,816 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:47:52,817 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 17:47:52,817 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:47:52,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:47:52,817 INFO L82 PathProgramCache]: Analyzing trace with hash -366292473, now seen corresponding path program 2 times [2020-10-14 17:47:52,818 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:47:52,818 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [86373030] [2020-10-14 17:47:52,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:47:52,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:47:52,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:47:52,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:47:52,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:47:53,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:47:53,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-14 17:47:53,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 17:47:53,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 350 [2020-10-14 17:47:53,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:47:53,177 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:47:53,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 17:47:53,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 17:47:53,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 17:47:53,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 17:47:53,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:47:53,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:47:53,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:47:53,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:47:53,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:47:53,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:47:53,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 17:47:53,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:47:53,596 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:47:53,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:47:53,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:47:53,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:47:53,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:47:53,601 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 17:47:53,601 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [86373030] [2020-10-14 17:47:53,602 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:47:53,602 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 17:47:53,602 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716167498] [2020-10-14 17:47:53,603 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 17:47:53,603 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:47:53,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 17:47:53,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-10-14 17:47:53,604 INFO L87 Difference]: Start difference. First operand 51 states and 62 transitions. Second operand 12 states. [2020-10-14 17:47:53,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:47:53,978 INFO L93 Difference]: Finished difference Result 91 states and 108 transitions. [2020-10-14 17:47:53,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 17:47:53,979 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 21 [2020-10-14 17:47:53,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:47:53,980 INFO L225 Difference]: With dead ends: 91 [2020-10-14 17:47:53,980 INFO L226 Difference]: Without dead ends: 74 [2020-10-14 17:47:53,981 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2020-10-14 17:47:53,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-14 17:47:53,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 46. [2020-10-14 17:47:53,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-14 17:47:53,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 54 transitions. [2020-10-14 17:47:53,991 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 54 transitions. Word has length 21 [2020-10-14 17:47:53,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:47:53,991 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 54 transitions. [2020-10-14 17:47:53,991 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 17:47:53,991 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 54 transitions. [2020-10-14 17:47:53,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-14 17:47:53,992 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:47:53,992 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:47:53,993 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 17:47:53,993 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:47:53,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:47:53,994 INFO L82 PathProgramCache]: Analyzing trace with hash -683039127, now seen corresponding path program 1 times [2020-10-14 17:47:53,994 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:47:53,994 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1202232772] [2020-10-14 17:47:53,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:47:54,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:47:54,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:47:54,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:47:54,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:47:54,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-14 17:47:54,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:47:54,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-14 17:47:54,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:47:54,064 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:47:54,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 17:47:54,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 17:47:54,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:47:54,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:47:54,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:47:54,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:47:54,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:47:54,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:47:54,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:47:54,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:47:54,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:47:54,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:47:54,090 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:47:54,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:47:54,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:47:54,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:47:54,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:47:54,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-14 17:47:54,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:47:54,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:47:54,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:47:54,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:47:54,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:47:54,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:47:54,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:47:54,097 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:47:54,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:47:54,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:47:54,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:47:54,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:47:54,101 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-14 17:47:54,101 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1202232772] [2020-10-14 17:47:54,101 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:47:54,101 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 17:47:54,102 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448753743] [2020-10-14 17:47:54,102 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 17:47:54,102 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:47:54,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 17:47:54,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 17:47:54,103 INFO L87 Difference]: Start difference. First operand 46 states and 54 transitions. Second operand 5 states. [2020-10-14 17:47:54,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:47:54,170 INFO L93 Difference]: Finished difference Result 86 states and 102 transitions. [2020-10-14 17:47:54,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 17:47:54,170 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2020-10-14 17:47:54,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:47:54,172 INFO L225 Difference]: With dead ends: 86 [2020-10-14 17:47:54,172 INFO L226 Difference]: Without dead ends: 55 [2020-10-14 17:47:54,173 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 17:47:54,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-10-14 17:47:54,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 51. [2020-10-14 17:47:54,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-14 17:47:54,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 60 transitions. [2020-10-14 17:47:54,181 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 60 transitions. Word has length 26 [2020-10-14 17:47:54,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:47:54,182 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 60 transitions. [2020-10-14 17:47:54,182 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 17:47:54,182 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 60 transitions. [2020-10-14 17:47:54,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-14 17:47:54,183 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:47:54,183 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:47:54,184 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 17:47:54,184 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:47:54,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:47:54,184 INFO L82 PathProgramCache]: Analyzing trace with hash 1764589835, now seen corresponding path program 2 times [2020-10-14 17:47:54,185 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:47:54,185 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2124863508] [2020-10-14 17:47:54,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:47:54,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:47:54,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:47:54,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:47:54,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:47:54,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:47:54,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-14 17:47:54,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 17:47:54,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 267 [2020-10-14 17:47:54,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:47:54,462 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:47:54,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 17:47:54,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 17:47:54,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-14 17:47:54,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:47:54,639 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 28 [2020-10-14 17:47:54,762 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-10-14 17:47:54,940 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 45 [2020-10-14 17:47:55,088 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 44 [2020-10-14 17:47:55,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:47:55,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:47:55,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:47:55,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:47:55,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:47:55,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:47:55,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 17:47:55,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:47:55,214 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:47:55,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:47:55,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:47:55,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:47:55,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:47:55,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-14 17:47:55,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:47:55,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:47:55,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:47:55,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:47:55,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:47:55,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 17:47:55,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:47:55,224 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:47:55,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:47:55,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:47:55,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:47:55,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:47:55,232 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 17:47:55,232 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2124863508] [2020-10-14 17:47:55,233 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:47:55,233 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 17:47:55,233 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023065774] [2020-10-14 17:47:55,233 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 17:47:55,234 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:47:55,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 17:47:55,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-10-14 17:47:55,234 INFO L87 Difference]: Start difference. First operand 51 states and 60 transitions. Second operand 13 states. [2020-10-14 17:47:55,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:47:55,804 INFO L93 Difference]: Finished difference Result 92 states and 114 transitions. [2020-10-14 17:47:55,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 17:47:55,804 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 29 [2020-10-14 17:47:55,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:47:55,806 INFO L225 Difference]: With dead ends: 92 [2020-10-14 17:47:55,806 INFO L226 Difference]: Without dead ends: 90 [2020-10-14 17:47:55,807 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=70, Invalid=392, Unknown=0, NotChecked=0, Total=462 [2020-10-14 17:47:55,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-10-14 17:47:55,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 66. [2020-10-14 17:47:55,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-14 17:47:55,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 80 transitions. [2020-10-14 17:47:55,818 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 80 transitions. Word has length 29 [2020-10-14 17:47:55,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:47:55,818 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 80 transitions. [2020-10-14 17:47:55,818 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 17:47:55,819 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 80 transitions. [2020-10-14 17:47:55,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-14 17:47:55,820 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:47:55,820 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:47:55,820 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 17:47:55,820 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:47:55,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:47:55,821 INFO L82 PathProgramCache]: Analyzing trace with hash -626060679, now seen corresponding path program 1 times [2020-10-14 17:47:55,821 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:47:55,821 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [905879281] [2020-10-14 17:47:55,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:47:55,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:47:55,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:47:55,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:47:55,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:47:56,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:47:56,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-14 17:47:56,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 17:47:56,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 203 [2020-10-14 17:47:56,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:47:56,033 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:47:56,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 17:47:56,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 17:47:56,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 17:47:56,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:47:56,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:47:56,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:47:56,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:47:56,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:47:56,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:47:56,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:47:56,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:47:56,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:47:56,306 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:47:56,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:47:56,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:47:56,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:47:56,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:47:56,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-14 17:47:56,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:47:56,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:47:56,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:47:56,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:47:56,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:47:56,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 17:47:56,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:47:56,315 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:47:56,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:47:56,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:47:56,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:47:56,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:47:56,322 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 17:47:56,322 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [905879281] [2020-10-14 17:47:56,323 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:47:56,323 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 17:47:56,323 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637411817] [2020-10-14 17:47:56,324 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 17:47:56,324 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:47:56,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 17:47:56,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-10-14 17:47:56,325 INFO L87 Difference]: Start difference. First operand 66 states and 80 transitions. Second operand 11 states. [2020-10-14 17:47:56,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:47:56,751 INFO L93 Difference]: Finished difference Result 87 states and 104 transitions. [2020-10-14 17:47:56,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 17:47:56,752 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 30 [2020-10-14 17:47:56,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:47:56,754 INFO L225 Difference]: With dead ends: 87 [2020-10-14 17:47:56,754 INFO L226 Difference]: Without dead ends: 85 [2020-10-14 17:47:56,755 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2020-10-14 17:47:56,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-10-14 17:47:56,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 74. [2020-10-14 17:47:56,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-10-14 17:47:56,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 88 transitions. [2020-10-14 17:47:56,780 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 88 transitions. Word has length 30 [2020-10-14 17:47:56,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:47:56,780 INFO L479 AbstractCegarLoop]: Abstraction has 74 states and 88 transitions. [2020-10-14 17:47:56,780 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 17:47:56,780 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 88 transitions. [2020-10-14 17:47:56,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-14 17:47:56,784 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:47:56,784 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:47:56,785 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 17:47:56,785 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:47:56,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:47:56,786 INFO L82 PathProgramCache]: Analyzing trace with hash -875754711, now seen corresponding path program 3 times [2020-10-14 17:47:56,786 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:47:56,786 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [918480701] [2020-10-14 17:47:56,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:47:56,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:47:56,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:47:56,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:47:56,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:47:57,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:47:57,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-14 17:47:57,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 17:47:57,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 464 [2020-10-14 17:47:57,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:47:57,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:47:57,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 17:47:57,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 17:47:57,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 17:47:57,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 24 [2020-10-14 17:47:58,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:47:58,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:47:58,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:47:58,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:47:58,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:47:58,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:47:58,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:47:58,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:47:58,058 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:47:58,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:47:58,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:47:58,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:47:58,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:47:58,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 17:47:58,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:47:58,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:47:58,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:47:58,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:47:58,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:47:58,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 17:47:58,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:47:58,070 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:47:58,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:47:58,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:47:58,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:47:58,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:47:58,086 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 17:47:58,087 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [918480701] [2020-10-14 17:47:58,087 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:47:58,087 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 17:47:58,088 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067394645] [2020-10-14 17:47:58,088 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 17:47:58,089 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:47:58,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 17:47:58,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-10-14 17:47:58,090 INFO L87 Difference]: Start difference. First operand 74 states and 88 transitions. Second operand 14 states. [2020-10-14 17:47:58,538 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2020-10-14 17:47:59,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:47:59,144 INFO L93 Difference]: Finished difference Result 111 states and 134 transitions. [2020-10-14 17:47:59,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 17:47:59,145 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 32 [2020-10-14 17:47:59,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:47:59,146 INFO L225 Difference]: With dead ends: 111 [2020-10-14 17:47:59,146 INFO L226 Difference]: Without dead ends: 109 [2020-10-14 17:47:59,147 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=77, Invalid=429, Unknown=0, NotChecked=0, Total=506 [2020-10-14 17:47:59,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-10-14 17:47:59,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 67. [2020-10-14 17:47:59,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-14 17:47:59,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 77 transitions. [2020-10-14 17:47:59,158 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 77 transitions. Word has length 32 [2020-10-14 17:47:59,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:47:59,158 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 77 transitions. [2020-10-14 17:47:59,158 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 17:47:59,158 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 77 transitions. [2020-10-14 17:47:59,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-14 17:47:59,160 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:47:59,160 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:47:59,160 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 17:47:59,160 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:47:59,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:47:59,161 INFO L82 PathProgramCache]: Analyzing trace with hash -551359473, now seen corresponding path program 4 times [2020-10-14 17:47:59,161 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:47:59,161 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [821122910] [2020-10-14 17:47:59,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:47:59,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:47:59,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:47:59,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:47:59,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:47:59,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-14 17:47:59,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:47:59,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-14 17:47:59,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:47:59,282 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:47:59,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 17:47:59,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 17:47:59,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 17:47:59,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:47:59,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:47:59,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:47:59,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:47:59,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:47:59,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:47:59,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:47:59,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 17:47:59,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:47:59,328 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:47:59,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:47:59,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:47:59,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:47:59,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:47:59,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-14 17:47:59,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:47:59,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:47:59,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:47:59,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:47:59,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:47:59,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:47:59,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:47:59,336 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:47:59,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:47:59,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:47:59,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:47:59,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:47:59,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-14 17:47:59,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:47:59,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:47:59,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:47:59,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:47:59,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:47:59,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:47:59,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:47:59,341 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:47:59,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:47:59,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:47:59,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:47:59,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:47:59,345 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-14 17:47:59,345 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [821122910] [2020-10-14 17:47:59,345 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:47:59,346 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 17:47:59,346 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137494104] [2020-10-14 17:47:59,348 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 17:47:59,348 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:47:59,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 17:47:59,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 17:47:59,348 INFO L87 Difference]: Start difference. First operand 67 states and 77 transitions. Second operand 6 states. [2020-10-14 17:47:59,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:47:59,435 INFO L93 Difference]: Finished difference Result 124 states and 144 transitions. [2020-10-14 17:47:59,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 17:47:59,435 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 37 [2020-10-14 17:47:59,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:47:59,437 INFO L225 Difference]: With dead ends: 124 [2020-10-14 17:47:59,437 INFO L226 Difference]: Without dead ends: 77 [2020-10-14 17:47:59,439 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 17:47:59,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-10-14 17:47:59,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 73. [2020-10-14 17:47:59,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-14 17:47:59,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 85 transitions. [2020-10-14 17:47:59,453 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 85 transitions. Word has length 37 [2020-10-14 17:47:59,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:47:59,454 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 85 transitions. [2020-10-14 17:47:59,454 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 17:47:59,454 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 85 transitions. [2020-10-14 17:47:59,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-14 17:47:59,458 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:47:59,459 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:47:59,459 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 17:47:59,459 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:47:59,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:47:59,460 INFO L82 PathProgramCache]: Analyzing trace with hash 1990031405, now seen corresponding path program 5 times [2020-10-14 17:47:59,460 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:47:59,460 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2082339536] [2020-10-14 17:47:59,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:47:59,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:47:59,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:47:59,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:47:59,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:47:59,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:47:59,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-14 17:47:59,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 17:47:59,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 435 [2020-10-14 17:47:59,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:47:59,904 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:47:59,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 17:47:59,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 17:47:59,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-14 17:47:59,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:48:00,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:48:00,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:00,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:00,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:00,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:48:00,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:00,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:48:00,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:00,734 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:00,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:48:00,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:48:00,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:48:00,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:48:00,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 17:48:00,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:00,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:00,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:00,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:48:00,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:00,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 17:48:00,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:00,747 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:00,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:48:00,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:48:00,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:48:00,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:48:00,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-14 17:48:00,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:00,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:00,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:00,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:48:00,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:00,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 17:48:00,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:00,761 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:00,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:48:00,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:48:00,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:48:00,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:48:00,784 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 4 proven. 20 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 17:48:00,785 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2082339536] [2020-10-14 17:48:00,785 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:48:00,785 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 17:48:00,786 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163282399] [2020-10-14 17:48:00,786 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 17:48:00,787 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:48:00,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 17:48:00,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2020-10-14 17:48:00,788 INFO L87 Difference]: Start difference. First operand 73 states and 85 transitions. Second operand 15 states. [2020-10-14 17:48:01,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:48:01,494 INFO L93 Difference]: Finished difference Result 129 states and 158 transitions. [2020-10-14 17:48:01,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 17:48:01,495 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 40 [2020-10-14 17:48:01,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:48:01,496 INFO L225 Difference]: With dead ends: 129 [2020-10-14 17:48:01,496 INFO L226 Difference]: Without dead ends: 127 [2020-10-14 17:48:01,497 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=63, Invalid=399, Unknown=0, NotChecked=0, Total=462 [2020-10-14 17:48:01,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-10-14 17:48:01,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 92. [2020-10-14 17:48:01,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-10-14 17:48:01,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 111 transitions. [2020-10-14 17:48:01,511 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 111 transitions. Word has length 40 [2020-10-14 17:48:01,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:48:01,511 INFO L479 AbstractCegarLoop]: Abstraction has 92 states and 111 transitions. [2020-10-14 17:48:01,511 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 17:48:01,511 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 111 transitions. [2020-10-14 17:48:01,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-14 17:48:01,512 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:48:01,512 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:48:01,513 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 17:48:01,513 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:48:01,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:48:01,513 INFO L82 PathProgramCache]: Analyzing trace with hash -228316724, now seen corresponding path program 2 times [2020-10-14 17:48:01,513 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:48:01,514 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1017291100] [2020-10-14 17:48:01,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:48:01,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:01,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:01,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:01,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:01,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:01,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-14 17:48:01,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 17:48:01,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 243 [2020-10-14 17:48:01,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:01,765 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:01,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 17:48:01,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 17:48:01,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-14 17:48:01,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:48:02,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:48:02,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:02,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:02,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:02,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:48:02,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:02,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:48:02,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:02,190 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:02,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:48:02,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:48:02,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:48:02,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:48:02,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-14 17:48:02,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:02,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:02,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:02,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:48:02,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:02,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 17:48:02,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:02,200 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:02,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:48:02,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:48:02,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:48:02,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:48:02,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 17:48:02,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:02,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:02,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:02,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:48:02,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:02,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 17:48:02,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:02,208 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:02,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:48:02,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:48:02,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:48:02,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:48:02,217 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 4 proven. 20 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 17:48:02,218 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1017291100] [2020-10-14 17:48:02,218 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:48:02,218 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 17:48:02,218 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603446335] [2020-10-14 17:48:02,219 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 17:48:02,219 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:48:02,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 17:48:02,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-10-14 17:48:02,220 INFO L87 Difference]: Start difference. First operand 92 states and 111 transitions. Second operand 13 states. [2020-10-14 17:48:02,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:48:02,905 INFO L93 Difference]: Finished difference Result 114 states and 136 transitions. [2020-10-14 17:48:02,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 17:48:02,907 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 41 [2020-10-14 17:48:02,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:48:02,908 INFO L225 Difference]: With dead ends: 114 [2020-10-14 17:48:02,909 INFO L226 Difference]: Without dead ends: 112 [2020-10-14 17:48:02,910 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=56, Invalid=324, Unknown=0, NotChecked=0, Total=380 [2020-10-14 17:48:02,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-10-14 17:48:02,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 100. [2020-10-14 17:48:02,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-10-14 17:48:02,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 119 transitions. [2020-10-14 17:48:02,929 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 119 transitions. Word has length 41 [2020-10-14 17:48:02,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:48:02,930 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 119 transitions. [2020-10-14 17:48:02,930 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 17:48:02,930 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 119 transitions. [2020-10-14 17:48:02,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-14 17:48:02,931 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:48:02,931 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:48:02,931 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 17:48:02,931 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:48:02,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:48:02,932 INFO L82 PathProgramCache]: Analyzing trace with hash 882184015, now seen corresponding path program 6 times [2020-10-14 17:48:02,932 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:48:02,932 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1397533873] [2020-10-14 17:48:02,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:48:02,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:02,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:02,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:03,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:03,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:03,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-14 17:48:03,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 17:48:03,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 526 [2020-10-14 17:48:03,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:03,467 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:03,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 17:48:03,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 17:48:03,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-14 17:48:03,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:48:04,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:48:04,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:04,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:04,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:04,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:48:04,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:04,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:48:04,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:04,307 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:04,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:48:04,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:48:04,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:48:04,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:48:04,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 17:48:04,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:04,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:04,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:04,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:48:04,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:04,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 17:48:04,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:04,319 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:04,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:48:04,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:48:04,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:48:04,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:48:04,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-14 17:48:04,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:04,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:04,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:04,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:48:04,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:04,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 17:48:04,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:04,332 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:04,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:48:04,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:48:04,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:48:04,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:48:04,349 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 4 proven. 30 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 17:48:04,349 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1397533873] [2020-10-14 17:48:04,349 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:48:04,349 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 17:48:04,350 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248375638] [2020-10-14 17:48:04,351 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 17:48:04,351 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:48:04,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 17:48:04,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2020-10-14 17:48:04,352 INFO L87 Difference]: Start difference. First operand 100 states and 119 transitions. Second operand 16 states. [2020-10-14 17:48:05,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:48:05,728 INFO L93 Difference]: Finished difference Result 142 states and 171 transitions. [2020-10-14 17:48:05,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-14 17:48:05,731 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 43 [2020-10-14 17:48:05,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:48:05,733 INFO L225 Difference]: With dead ends: 142 [2020-10-14 17:48:05,733 INFO L226 Difference]: Without dead ends: 140 [2020-10-14 17:48:05,736 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=91, Invalid=611, Unknown=0, NotChecked=0, Total=702 [2020-10-14 17:48:05,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-10-14 17:48:05,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 89. [2020-10-14 17:48:05,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-10-14 17:48:05,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 102 transitions. [2020-10-14 17:48:05,756 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 102 transitions. Word has length 43 [2020-10-14 17:48:05,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:48:05,756 INFO L479 AbstractCegarLoop]: Abstraction has 89 states and 102 transitions. [2020-10-14 17:48:05,757 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 17:48:05,757 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 102 transitions. [2020-10-14 17:48:05,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-14 17:48:05,758 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:48:05,758 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:48:05,758 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 17:48:05,759 INFO L427 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:48:05,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:48:05,759 INFO L82 PathProgramCache]: Analyzing trace with hash -977100495, now seen corresponding path program 7 times [2020-10-14 17:48:05,759 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:48:05,759 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [563852274] [2020-10-14 17:48:05,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:48:05,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:05,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:05,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:05,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:05,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-14 17:48:05,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:48:05,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-10-14 17:48:05,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:05,908 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:05,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 17:48:05,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 17:48:05,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 17:48:05,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:48:05,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:48:05,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:05,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:05,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:05,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:48:05,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:05,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:48:05,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:05,950 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:05,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:48:05,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:48:05,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:48:05,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:48:05,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 17:48:05,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:05,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:05,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:05,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:48:05,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:05,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:48:05,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:05,956 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:05,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:48:05,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:48:05,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:48:05,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:48:05,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-14 17:48:05,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:05,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:05,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:05,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:48:05,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:05,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:48:05,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:05,961 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:05,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:48:05,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:48:05,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:48:05,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:48:05,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-14 17:48:05,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:05,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:05,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:05,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:48:05,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:05,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:48:05,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:05,966 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:05,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:48:05,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:48:05,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:48:05,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:48:05,970 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-10-14 17:48:05,970 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [563852274] [2020-10-14 17:48:05,971 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:48:05,971 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 17:48:05,971 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563166116] [2020-10-14 17:48:05,972 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 17:48:05,972 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:48:05,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 17:48:05,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-14 17:48:05,973 INFO L87 Difference]: Start difference. First operand 89 states and 102 transitions. Second operand 7 states. [2020-10-14 17:48:06,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:48:06,061 INFO L93 Difference]: Finished difference Result 162 states and 186 transitions. [2020-10-14 17:48:06,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 17:48:06,061 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 48 [2020-10-14 17:48:06,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:48:06,062 INFO L225 Difference]: With dead ends: 162 [2020-10-14 17:48:06,063 INFO L226 Difference]: Without dead ends: 99 [2020-10-14 17:48:06,064 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-14 17:48:06,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-10-14 17:48:06,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 95. [2020-10-14 17:48:06,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-10-14 17:48:06,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 110 transitions. [2020-10-14 17:48:06,087 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 110 transitions. Word has length 48 [2020-10-14 17:48:06,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:48:06,088 INFO L479 AbstractCegarLoop]: Abstraction has 95 states and 110 transitions. [2020-10-14 17:48:06,088 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 17:48:06,088 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 110 transitions. [2020-10-14 17:48:06,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-14 17:48:06,089 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:48:06,089 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:48:06,089 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 17:48:06,089 INFO L427 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:48:06,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:48:06,090 INFO L82 PathProgramCache]: Analyzing trace with hash -1421216173, now seen corresponding path program 8 times [2020-10-14 17:48:06,090 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:48:06,090 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1973284149] [2020-10-14 17:48:06,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:48:06,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:06,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:06,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:06,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:06,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:06,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-14 17:48:06,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 17:48:06,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 500 [2020-10-14 17:48:06,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:06,600 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:06,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 17:48:06,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 17:48:06,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-14 17:48:06,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:48:07,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:48:07,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:07,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:07,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:07,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:48:07,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:07,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:48:07,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:07,585 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:07,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:48:07,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:48:07,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:48:07,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 17:48:07,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 17:48:07,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:07,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:07,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:07,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:48:07,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:07,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 17:48:07,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:07,600 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:07,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:48:07,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:48:07,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:48:07,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:48:07,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-14 17:48:07,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:07,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:07,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:07,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:48:07,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:07,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 17:48:07,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:07,610 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:07,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:48:07,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:48:07,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:48:07,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:48:07,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-14 17:48:07,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:07,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:07,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:07,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:48:07,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:07,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 17:48:07,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:07,636 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:07,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:48:07,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:48:07,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:48:07,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 16 [2020-10-14 17:48:07,656 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 6 proven. 40 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-14 17:48:07,657 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1973284149] [2020-10-14 17:48:07,659 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:48:07,660 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 17:48:07,660 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903052736] [2020-10-14 17:48:07,660 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 17:48:07,660 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:48:07,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 17:48:07,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=238, Unknown=0, NotChecked=0, Total=272 [2020-10-14 17:48:07,661 INFO L87 Difference]: Start difference. First operand 95 states and 110 transitions. Second operand 17 states. [2020-10-14 17:48:09,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:48:09,117 INFO L93 Difference]: Finished difference Result 154 states and 188 transitions. [2020-10-14 17:48:09,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-14 17:48:09,118 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 51 [2020-10-14 17:48:09,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:48:09,119 INFO L225 Difference]: With dead ends: 154 [2020-10-14 17:48:09,120 INFO L226 Difference]: Without dead ends: 152 [2020-10-14 17:48:09,121 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=89, Invalid=723, Unknown=0, NotChecked=0, Total=812 [2020-10-14 17:48:09,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2020-10-14 17:48:09,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 118. [2020-10-14 17:48:09,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-10-14 17:48:09,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 142 transitions. [2020-10-14 17:48:09,136 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 142 transitions. Word has length 51 [2020-10-14 17:48:09,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:48:09,136 INFO L479 AbstractCegarLoop]: Abstraction has 118 states and 142 transitions. [2020-10-14 17:48:09,136 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 17:48:09,136 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 142 transitions. [2020-10-14 17:48:09,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-14 17:48:09,137 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:48:09,137 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:48:09,138 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 17:48:09,138 INFO L427 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:48:09,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:48:09,138 INFO L82 PathProgramCache]: Analyzing trace with hash -1499120929, now seen corresponding path program 3 times [2020-10-14 17:48:09,138 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:48:09,139 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [998550769] [2020-10-14 17:48:09,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:48:09,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:09,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:09,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:09,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:09,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:09,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-14 17:48:09,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 17:48:09,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 468 [2020-10-14 17:48:09,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:09,615 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:09,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 17:48:09,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 17:48:09,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-14 17:48:09,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:48:10,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:48:10,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:10,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:10,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:10,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:48:10,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:10,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:48:10,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:10,089 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:10,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:48:10,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:48:10,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:48:10,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:48:10,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-14 17:48:10,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:10,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:10,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:10,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:48:10,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:10,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 17:48:10,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:10,097 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:10,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:48:10,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:48:10,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:48:10,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:48:10,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-14 17:48:10,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:10,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:10,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:10,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:48:10,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:10,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 17:48:10,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:10,110 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:10,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:48:10,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:48:10,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:48:10,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:48:10,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-14 17:48:10,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:10,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:10,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:10,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:48:10,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:10,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 17:48:10,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:10,125 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:10,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:48:10,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:48:10,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:48:10,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:48:10,150 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 6 proven. 40 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-14 17:48:10,151 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [998550769] [2020-10-14 17:48:10,151 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:48:10,151 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 17:48:10,151 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904629755] [2020-10-14 17:48:10,152 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 17:48:10,152 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:48:10,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 17:48:10,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2020-10-14 17:48:10,153 INFO L87 Difference]: Start difference. First operand 118 states and 142 transitions. Second operand 15 states. [2020-10-14 17:48:11,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:48:11,021 INFO L93 Difference]: Finished difference Result 141 states and 168 transitions. [2020-10-14 17:48:11,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 17:48:11,029 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 52 [2020-10-14 17:48:11,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:48:11,030 INFO L225 Difference]: With dead ends: 141 [2020-10-14 17:48:11,030 INFO L226 Difference]: Without dead ends: 139 [2020-10-14 17:48:11,033 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=59, Invalid=403, Unknown=0, NotChecked=0, Total=462 [2020-10-14 17:48:11,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-10-14 17:48:11,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 126. [2020-10-14 17:48:11,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-10-14 17:48:11,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 150 transitions. [2020-10-14 17:48:11,059 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 150 transitions. Word has length 52 [2020-10-14 17:48:11,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:48:11,059 INFO L479 AbstractCegarLoop]: Abstraction has 126 states and 150 transitions. [2020-10-14 17:48:11,060 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 17:48:11,060 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 150 transitions. [2020-10-14 17:48:11,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-14 17:48:11,060 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:48:11,061 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:48:11,061 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 17:48:11,061 INFO L427 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:48:11,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:48:11,061 INFO L82 PathProgramCache]: Analyzing trace with hash 722859505, now seen corresponding path program 9 times [2020-10-14 17:48:11,062 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:48:11,062 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [20700189] [2020-10-14 17:48:11,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:48:11,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:11,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:11,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:11,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:11,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:11,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-14 17:48:11,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 17:48:11,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 582 [2020-10-14 17:48:11,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:11,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:11,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 17:48:11,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 17:48:11,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-14 17:48:11,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:48:12,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:48:12,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:12,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:12,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:12,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:48:12,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:12,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:48:12,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:12,366 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:12,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:48:12,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:48:12,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:48:12,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:48:12,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-14 17:48:12,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:12,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:12,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:12,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:48:12,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:12,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 17:48:12,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:12,374 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:12,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:48:12,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:48:12,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:48:12,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:48:12,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-14 17:48:12,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:12,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:12,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:12,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:48:12,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:12,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:48:12,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:12,381 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:12,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:48:12,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:48:12,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:48:12,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:48:12,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-14 17:48:12,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:12,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:12,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:12,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:48:12,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:12,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:48:12,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:12,388 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:12,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:48:12,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:48:12,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:48:12,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:48:12,406 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 6 proven. 53 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-14 17:48:12,406 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [20700189] [2020-10-14 17:48:12,406 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:48:12,406 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-14 17:48:12,407 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565946946] [2020-10-14 17:48:12,407 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-14 17:48:12,407 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:48:12,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-14 17:48:12,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2020-10-14 17:48:12,408 INFO L87 Difference]: Start difference. First operand 126 states and 150 transitions. Second operand 18 states. [2020-10-14 17:48:13,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:48:13,367 INFO L93 Difference]: Finished difference Result 170 states and 203 transitions. [2020-10-14 17:48:13,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 17:48:13,373 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 54 [2020-10-14 17:48:13,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:48:13,375 INFO L225 Difference]: With dead ends: 170 [2020-10-14 17:48:13,375 INFO L226 Difference]: Without dead ends: 168 [2020-10-14 17:48:13,376 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=80, Invalid=570, Unknown=0, NotChecked=0, Total=650 [2020-10-14 17:48:13,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2020-10-14 17:48:13,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 111. [2020-10-14 17:48:13,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-10-14 17:48:13,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 127 transitions. [2020-10-14 17:48:13,389 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 127 transitions. Word has length 54 [2020-10-14 17:48:13,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:48:13,389 INFO L479 AbstractCegarLoop]: Abstraction has 111 states and 127 transitions. [2020-10-14 17:48:13,390 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-14 17:48:13,390 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 127 transitions. [2020-10-14 17:48:13,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-14 17:48:13,390 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:48:13,391 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:48:13,391 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 17:48:13,391 INFO L427 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:48:13,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:48:13,391 INFO L82 PathProgramCache]: Analyzing trace with hash 1060739415, now seen corresponding path program 10 times [2020-10-14 17:48:13,392 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:48:13,392 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1215923303] [2020-10-14 17:48:13,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:48:13,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:13,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:13,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:13,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:13,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 17:48:13,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:48:13,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 180 [2020-10-14 17:48:13,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:13,580 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:13,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 17:48:13,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 17:48:13,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 17:48:13,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:48:13,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:48:13,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:13,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:13,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:13,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:48:13,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:13,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:48:13,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:13,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:13,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:48:13,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:48:13,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:48:13,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:48:13,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 17:48:13,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:13,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:13,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:13,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:48:13,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:13,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:48:13,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:13,628 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:13,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:48:13,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:48:13,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:48:13,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:48:13,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-14 17:48:13,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:13,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:13,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:13,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:48:13,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:13,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:48:13,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:13,635 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:13,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:48:13,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:48:13,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:48:13,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:48:13,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-14 17:48:13,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:13,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:13,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:13,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:48:13,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:13,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:48:13,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:13,644 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:13,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:48:13,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:48:13,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:48:13,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:48:13,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-14 17:48:13,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:13,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:13,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:13,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:48:13,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:13,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:48:13,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:13,648 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:13,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:48:13,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:48:13,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:48:13,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:48:13,653 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 8 proven. 22 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2020-10-14 17:48:13,653 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1215923303] [2020-10-14 17:48:13,653 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:48:13,654 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 17:48:13,654 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080088098] [2020-10-14 17:48:13,655 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 17:48:13,655 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:48:13,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 17:48:13,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 17:48:13,656 INFO L87 Difference]: Start difference. First operand 111 states and 127 transitions. Second operand 8 states. [2020-10-14 17:48:13,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:48:13,741 INFO L93 Difference]: Finished difference Result 200 states and 228 transitions. [2020-10-14 17:48:13,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 17:48:13,742 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 59 [2020-10-14 17:48:13,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:48:13,743 INFO L225 Difference]: With dead ends: 200 [2020-10-14 17:48:13,743 INFO L226 Difference]: Without dead ends: 121 [2020-10-14 17:48:13,744 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 17:48:13,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-10-14 17:48:13,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 117. [2020-10-14 17:48:13,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-10-14 17:48:13,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 135 transitions. [2020-10-14 17:48:13,757 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 135 transitions. Word has length 59 [2020-10-14 17:48:13,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:48:13,757 INFO L479 AbstractCegarLoop]: Abstraction has 117 states and 135 transitions. [2020-10-14 17:48:13,757 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 17:48:13,757 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 135 transitions. [2020-10-14 17:48:13,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-14 17:48:13,758 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:48:13,758 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:48:13,758 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 17:48:13,759 INFO L427 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:48:13,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:48:13,759 INFO L82 PathProgramCache]: Analyzing trace with hash 1892883189, now seen corresponding path program 11 times [2020-10-14 17:48:13,759 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:48:13,759 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1920010228] [2020-10-14 17:48:13,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:48:13,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:13,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:13,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:13,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:14,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:14,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-14 17:48:14,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 17:48:14,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 692 [2020-10-14 17:48:14,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:14,461 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:14,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 17:48:14,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 17:48:14,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-14 17:48:14,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:48:14,661 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 28 [2020-10-14 17:48:14,777 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 33 [2020-10-14 17:48:14,896 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 34 [2020-10-14 17:48:15,024 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 34 [2020-10-14 17:48:15,156 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 30 [2020-10-14 17:48:15,325 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 44 [2020-10-14 17:48:15,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:48:15,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:15,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:15,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:15,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:48:15,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:15,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:48:15,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:15,804 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:15,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:48:15,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:48:15,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:48:15,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:48:15,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-14 17:48:15,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:15,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:15,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:15,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:48:15,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:15,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 17:48:15,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:15,811 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:15,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:48:15,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:48:15,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:48:15,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:48:15,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-14 17:48:15,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:15,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:15,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:15,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:48:15,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:15,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 17:48:15,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:15,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:15,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:48:15,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:48:15,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:48:15,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:48:15,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-14 17:48:15,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:15,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:15,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:15,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:48:15,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:15,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 17:48:15,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:15,827 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:15,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:48:15,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:48:15,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:48:15,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:48:15,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-14 17:48:15,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:15,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:15,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:15,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:48:15,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:15,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 17:48:15,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:15,836 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:15,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:48:15,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:48:15,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:48:15,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:48:15,861 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 8 proven. 67 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-14 17:48:15,862 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1920010228] [2020-10-14 17:48:15,862 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:48:15,862 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-14 17:48:15,862 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684313420] [2020-10-14 17:48:15,863 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-14 17:48:15,863 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:48:15,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-14 17:48:15,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2020-10-14 17:48:15,864 INFO L87 Difference]: Start difference. First operand 117 states and 135 transitions. Second operand 19 states. [2020-10-14 17:48:17,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:48:17,631 INFO L93 Difference]: Finished difference Result 185 states and 225 transitions. [2020-10-14 17:48:17,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-14 17:48:17,631 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 62 [2020-10-14 17:48:17,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:48:17,633 INFO L225 Difference]: With dead ends: 185 [2020-10-14 17:48:17,633 INFO L226 Difference]: Without dead ends: 183 [2020-10-14 17:48:17,634 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=103, Invalid=953, Unknown=0, NotChecked=0, Total=1056 [2020-10-14 17:48:17,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-10-14 17:48:17,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 144. [2020-10-14 17:48:17,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-10-14 17:48:17,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 173 transitions. [2020-10-14 17:48:17,651 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 173 transitions. Word has length 62 [2020-10-14 17:48:17,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:48:17,652 INFO L479 AbstractCegarLoop]: Abstraction has 144 states and 173 transitions. [2020-10-14 17:48:17,652 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-14 17:48:17,652 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 173 transitions. [2020-10-14 17:48:17,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-14 17:48:17,653 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:48:17,653 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:48:17,653 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-14 17:48:17,654 INFO L427 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:48:17,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:48:17,654 INFO L82 PathProgramCache]: Analyzing trace with hash 2143097906, now seen corresponding path program 4 times [2020-10-14 17:48:17,654 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:48:17,654 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [959718841] [2020-10-14 17:48:17,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:48:17,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:17,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:17,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:17,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:18,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:18,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-14 17:48:18,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 17:48:18,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 697 [2020-10-14 17:48:18,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:18,367 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:18,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 17:48:18,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 17:48:18,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-14 17:48:18,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:48:18,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:48:18,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:18,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:18,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:18,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:48:18,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:18,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:48:18,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:18,897 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:18,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:48:18,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:48:18,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:48:18,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:48:18,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 17:48:18,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:18,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:18,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:18,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:48:18,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:18,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 17:48:18,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:18,908 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:18,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:48:18,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:48:18,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:48:18,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:48:18,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-14 17:48:18,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:18,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:18,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:18,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:48:18,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:18,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 17:48:18,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:18,918 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:18,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:48:18,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:48:18,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:48:18,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:48:18,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-14 17:48:18,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:18,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:18,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:18,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:48:18,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:18,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 17:48:18,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:18,929 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:18,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:48:18,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:48:18,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:48:18,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:48:18,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-14 17:48:18,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:18,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:18,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:18,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:48:18,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:18,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 17:48:18,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:18,940 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:18,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:48:18,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:48:18,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:48:18,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:48:18,964 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 8 proven. 67 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-14 17:48:18,964 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [959718841] [2020-10-14 17:48:18,965 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:48:18,965 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 17:48:18,965 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394460713] [2020-10-14 17:48:18,967 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 17:48:18,967 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:48:18,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 17:48:18,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2020-10-14 17:48:18,968 INFO L87 Difference]: Start difference. First operand 144 states and 173 transitions. Second operand 17 states. [2020-10-14 17:48:19,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:48:19,938 INFO L93 Difference]: Finished difference Result 168 states and 200 transitions. [2020-10-14 17:48:19,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 17:48:19,938 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 63 [2020-10-14 17:48:19,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:48:19,940 INFO L225 Difference]: With dead ends: 168 [2020-10-14 17:48:19,940 INFO L226 Difference]: Without dead ends: 166 [2020-10-14 17:48:19,941 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=69, Invalid=531, Unknown=0, NotChecked=0, Total=600 [2020-10-14 17:48:19,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-10-14 17:48:19,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 152. [2020-10-14 17:48:19,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-10-14 17:48:19,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 181 transitions. [2020-10-14 17:48:19,980 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 181 transitions. Word has length 63 [2020-10-14 17:48:19,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:48:19,981 INFO L479 AbstractCegarLoop]: Abstraction has 152 states and 181 transitions. [2020-10-14 17:48:19,981 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 17:48:19,981 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 181 transitions. [2020-10-14 17:48:19,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-14 17:48:19,984 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:48:19,984 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:48:19,984 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-14 17:48:19,984 INFO L427 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:48:19,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:48:19,984 INFO L82 PathProgramCache]: Analyzing trace with hash 1736821911, now seen corresponding path program 12 times [2020-10-14 17:48:19,985 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:48:19,985 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2064142864] [2020-10-14 17:48:19,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:48:19,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:19,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:20,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:20,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:20,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:20,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 17:48:20,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 17:48:20,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 725 [2020-10-14 17:48:20,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:20,718 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:20,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-14 17:48:20,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 17:48:20,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-14 17:48:20,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:48:20,976 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 30 [2020-10-14 17:48:21,184 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 31 [2020-10-14 17:48:22,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:48:22,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:22,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:22,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:22,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:48:22,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:22,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:48:22,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:22,109 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:22,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:48:22,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:48:22,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:48:22,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:48:22,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 17:48:22,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:22,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:22,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:22,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:48:22,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:22,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 17:48:22,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:22,117 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:22,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:48:22,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:48:22,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:48:22,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:48:22,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-14 17:48:22,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:22,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:22,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:22,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:48:22,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:22,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 17:48:22,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:22,126 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:22,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:48:22,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:48:22,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:48:22,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:48:22,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-14 17:48:22,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:22,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:22,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:22,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:48:22,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:22,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 17:48:22,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:22,134 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:22,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:48:22,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:48:22,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:48:22,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:48:22,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-14 17:48:22,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:22,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:22,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:22,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:48:22,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:22,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 17:48:22,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:22,143 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:22,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:48:22,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:48:22,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:48:22,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:48:22,174 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 8 proven. 83 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-14 17:48:22,175 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2064142864] [2020-10-14 17:48:22,175 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:48:22,175 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-14 17:48:22,176 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496942686] [2020-10-14 17:48:22,176 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-14 17:48:22,176 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:48:22,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-14 17:48:22,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=337, Unknown=0, NotChecked=0, Total=380 [2020-10-14 17:48:22,177 INFO L87 Difference]: Start difference. First operand 152 states and 181 transitions. Second operand 20 states. [2020-10-14 17:48:24,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:48:24,356 INFO L93 Difference]: Finished difference Result 227 states and 274 transitions. [2020-10-14 17:48:24,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-14 17:48:24,358 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 65 [2020-10-14 17:48:24,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:48:24,360 INFO L225 Difference]: With dead ends: 227 [2020-10-14 17:48:24,360 INFO L226 Difference]: Without dead ends: 225 [2020-10-14 17:48:24,362 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=117, Invalid=1073, Unknown=0, NotChecked=0, Total=1190 [2020-10-14 17:48:24,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2020-10-14 17:48:24,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 133. [2020-10-14 17:48:24,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-10-14 17:48:24,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 152 transitions. [2020-10-14 17:48:24,380 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 152 transitions. Word has length 65 [2020-10-14 17:48:24,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:48:24,380 INFO L479 AbstractCegarLoop]: Abstraction has 133 states and 152 transitions. [2020-10-14 17:48:24,380 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-14 17:48:24,381 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 152 transitions. [2020-10-14 17:48:24,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-14 17:48:24,381 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:48:24,381 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:48:24,382 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-14 17:48:24,382 INFO L427 AbstractCegarLoop]: === Iteration 23 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:48:24,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:48:24,382 INFO L82 PathProgramCache]: Analyzing trace with hash -559088647, now seen corresponding path program 13 times [2020-10-14 17:48:24,382 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:48:24,382 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1580076589] [2020-10-14 17:48:24,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:48:24,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:24,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:24,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:24,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:24,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 17:48:24,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:48:24,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 280 [2020-10-14 17:48:24,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:24,670 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:24,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 17:48:24,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 17:48:24,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 17:48:24,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:48:24,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:48:24,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:24,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:24,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:24,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:48:24,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:24,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:48:24,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:24,727 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:24,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:48:24,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:48:24,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:48:24,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:48:24,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-14 17:48:24,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:24,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:24,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:24,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:48:24,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:24,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:48:24,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:24,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:24,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:48:24,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:48:24,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:48:24,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:48:24,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-14 17:48:24,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:24,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:24,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:24,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:48:24,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:24,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:48:24,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:24,738 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:24,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:48:24,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:48:24,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:48:24,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:48:24,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-14 17:48:24,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:24,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:24,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:24,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:48:24,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:24,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 17:48:24,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:24,745 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:24,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:48:24,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:48:24,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:48:24,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:48:24,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-14 17:48:24,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:24,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:24,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:24,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:48:24,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:24,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:48:24,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:24,750 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:24,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:48:24,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:48:24,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:48:24,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:48:24,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-14 17:48:24,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:24,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:24,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:24,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:48:24,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:24,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:48:24,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:24,755 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:24,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:48:24,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:48:24,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:48:24,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:48:24,761 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 10 proven. 35 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2020-10-14 17:48:24,761 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1580076589] [2020-10-14 17:48:24,761 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:48:24,762 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 17:48:24,763 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982056449] [2020-10-14 17:48:24,764 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 17:48:24,764 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:48:24,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 17:48:24,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-14 17:48:24,764 INFO L87 Difference]: Start difference. First operand 133 states and 152 transitions. Second operand 9 states. [2020-10-14 17:48:24,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:48:24,866 INFO L93 Difference]: Finished difference Result 238 states and 270 transitions. [2020-10-14 17:48:24,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 17:48:24,867 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 70 [2020-10-14 17:48:24,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:48:24,868 INFO L225 Difference]: With dead ends: 238 [2020-10-14 17:48:24,868 INFO L226 Difference]: Without dead ends: 143 [2020-10-14 17:48:24,869 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-14 17:48:24,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2020-10-14 17:48:24,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 139. [2020-10-14 17:48:24,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-10-14 17:48:24,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 160 transitions. [2020-10-14 17:48:24,885 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 160 transitions. Word has length 70 [2020-10-14 17:48:24,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:48:24,886 INFO L479 AbstractCegarLoop]: Abstraction has 139 states and 160 transitions. [2020-10-14 17:48:24,886 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 17:48:24,886 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 160 transitions. [2020-10-14 17:48:24,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-14 17:48:24,887 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:48:24,887 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:48:24,888 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-14 17:48:24,888 INFO L427 AbstractCegarLoop]: === Iteration 24 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:48:24,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:48:24,889 INFO L82 PathProgramCache]: Analyzing trace with hash 661449627, now seen corresponding path program 14 times [2020-10-14 17:48:24,889 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:48:24,889 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1300384493] [2020-10-14 17:48:24,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:48:24,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:24,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:24,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:25,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:25,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:25,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-14 17:48:25,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 17:48:25,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 859 [2020-10-14 17:48:25,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:25,760 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:25,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-14 17:48:25,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 17:48:25,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-14 17:48:25,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:48:26,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:48:26,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:26,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:26,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:26,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:48:26,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:26,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:48:26,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:26,737 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:26,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:48:26,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:48:26,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:48:26,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:48:26,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 17:48:26,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:26,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:26,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:26,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:48:26,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:26,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:48:26,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:26,743 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:26,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:48:26,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:48:26,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:48:26,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:48:26,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-14 17:48:26,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:26,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:26,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:26,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:48:26,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:26,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:48:26,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:26,750 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:26,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:48:26,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:48:26,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:48:26,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:48:26,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-14 17:48:26,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:26,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:26,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:26,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:48:26,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:26,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:48:26,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:26,757 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:26,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:48:26,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:48:26,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:48:26,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:48:26,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-14 17:48:26,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:26,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:26,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:26,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:48:26,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:26,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:48:26,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:26,764 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:26,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:48:26,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:48:26,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:48:26,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:48:26,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-14 17:48:26,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:26,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:26,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:26,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:48:26,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:26,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:48:26,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:26,772 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:26,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:48:26,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:48:26,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:48:26,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:48:26,795 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 10 proven. 101 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-14 17:48:26,795 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1300384493] [2020-10-14 17:48:26,796 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:48:26,796 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-14 17:48:26,796 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746334532] [2020-10-14 17:48:26,796 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-14 17:48:26,796 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:48:26,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-14 17:48:26,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=378, Unknown=0, NotChecked=0, Total=420 [2020-10-14 17:48:26,797 INFO L87 Difference]: Start difference. First operand 139 states and 160 transitions. Second operand 21 states. [2020-10-14 17:48:28,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:48:28,388 INFO L93 Difference]: Finished difference Result 222 states and 269 transitions. [2020-10-14 17:48:28,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-14 17:48:28,389 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 73 [2020-10-14 17:48:28,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:48:28,391 INFO L225 Difference]: With dead ends: 222 [2020-10-14 17:48:28,391 INFO L226 Difference]: Without dead ends: 220 [2020-10-14 17:48:28,392 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=87, Invalid=843, Unknown=0, NotChecked=0, Total=930 [2020-10-14 17:48:28,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2020-10-14 17:48:28,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 170. [2020-10-14 17:48:28,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2020-10-14 17:48:28,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 204 transitions. [2020-10-14 17:48:28,417 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 204 transitions. Word has length 73 [2020-10-14 17:48:28,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:48:28,417 INFO L479 AbstractCegarLoop]: Abstraction has 170 states and 204 transitions. [2020-10-14 17:48:28,417 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-14 17:48:28,418 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 204 transitions. [2020-10-14 17:48:28,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-14 17:48:28,418 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:48:28,419 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:48:28,419 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-14 17:48:28,419 INFO L427 AbstractCegarLoop]: === Iteration 25 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:48:28,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:48:28,419 INFO L82 PathProgramCache]: Analyzing trace with hash -1307781307, now seen corresponding path program 5 times [2020-10-14 17:48:28,420 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:48:28,420 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [602498404] [2020-10-14 17:48:28,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:48:28,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:28,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:28,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:28,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:29,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:29,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-14 17:48:29,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 17:48:29,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 687 [2020-10-14 17:48:29,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:29,114 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:29,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 17:48:29,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 17:48:29,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-14 17:48:29,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:48:29,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:48:29,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:29,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:29,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:29,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:48:29,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:29,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:48:29,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:29,721 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:29,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:48:29,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:48:29,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:48:29,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:48:29,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 17:48:29,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:29,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:29,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:29,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:48:29,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:29,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:48:29,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:29,725 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:29,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:48:29,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:48:29,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:48:29,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:48:29,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-14 17:48:29,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:29,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:29,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:29,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:48:29,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:29,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:48:29,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:29,731 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:29,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:48:29,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:48:29,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:48:29,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:48:29,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-14 17:48:29,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:29,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:29,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:29,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:48:29,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:29,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:48:29,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:29,738 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:29,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:48:29,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:48:29,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:48:29,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:48:29,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-14 17:48:29,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:29,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:29,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:29,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:48:29,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:29,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 17:48:29,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:29,746 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:29,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:48:29,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:48:29,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:48:29,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:48:29,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-14 17:48:29,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:29,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:29,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:29,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:48:29,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:29,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:48:29,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:29,753 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:29,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:48:29,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:48:29,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:48:29,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:48:29,773 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 10 proven. 101 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-14 17:48:29,774 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [602498404] [2020-10-14 17:48:29,774 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:48:29,774 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-14 17:48:29,774 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713547753] [2020-10-14 17:48:29,775 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-14 17:48:29,775 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:48:29,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-14 17:48:29,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2020-10-14 17:48:29,776 INFO L87 Difference]: Start difference. First operand 170 states and 204 transitions. Second operand 19 states. [2020-10-14 17:48:31,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:48:31,102 INFO L93 Difference]: Finished difference Result 195 states and 232 transitions. [2020-10-14 17:48:31,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-14 17:48:31,102 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 74 [2020-10-14 17:48:31,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:48:31,103 INFO L225 Difference]: With dead ends: 195 [2020-10-14 17:48:31,104 INFO L226 Difference]: Without dead ends: 193 [2020-10-14 17:48:31,104 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=80, Invalid=732, Unknown=0, NotChecked=0, Total=812 [2020-10-14 17:48:31,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2020-10-14 17:48:31,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 178. [2020-10-14 17:48:31,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-10-14 17:48:31,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 212 transitions. [2020-10-14 17:48:31,123 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 212 transitions. Word has length 74 [2020-10-14 17:48:31,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:48:31,123 INFO L479 AbstractCegarLoop]: Abstraction has 178 states and 212 transitions. [2020-10-14 17:48:31,123 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-14 17:48:31,124 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 212 transitions. [2020-10-14 17:48:31,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-14 17:48:31,125 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:48:31,125 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:48:31,125 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-14 17:48:31,125 INFO L427 AbstractCegarLoop]: === Iteration 26 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:48:31,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:48:31,126 INFO L82 PathProgramCache]: Analyzing trace with hash 524042425, now seen corresponding path program 15 times [2020-10-14 17:48:31,126 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:48:31,126 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1785825611] [2020-10-14 17:48:31,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:48:31,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:31,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:31,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:31,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:31,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:31,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-14 17:48:31,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 17:48:31,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 749 [2020-10-14 17:48:31,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:31,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:31,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-14 17:48:31,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 17:48:31,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 17:48:31,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:48:33,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:48:33,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:33,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:33,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:33,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:48:33,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:33,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:48:33,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:33,011 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:33,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:48:33,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:48:33,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:48:33,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:48:33,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-14 17:48:33,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:33,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:33,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:33,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:48:33,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:33,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:48:33,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:33,016 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:33,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:48:33,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:48:33,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:48:33,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:48:33,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-14 17:48:33,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:33,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:33,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:33,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:48:33,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:33,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:48:33,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:33,022 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:33,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:48:33,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:48:33,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:48:33,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:48:33,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-14 17:48:33,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:33,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:33,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:33,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:48:33,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:33,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 17:48:33,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:33,029 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:33,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:48:33,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:48:33,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:48:33,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:48:33,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-14 17:48:33,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:33,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:33,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:33,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:48:33,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:33,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:48:33,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:33,037 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:33,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:48:33,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:48:33,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:48:33,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:48:33,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-14 17:48:33,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:33,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:33,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:33,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:48:33,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:33,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 17:48:33,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:33,046 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:33,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:48:33,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:48:33,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:48:33,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:48:33,077 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 10 proven. 120 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-14 17:48:33,077 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1785825611] [2020-10-14 17:48:33,078 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:48:33,078 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-14 17:48:33,078 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930154461] [2020-10-14 17:48:33,078 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-14 17:48:33,079 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:48:33,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-14 17:48:33,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=416, Unknown=0, NotChecked=0, Total=462 [2020-10-14 17:48:33,080 INFO L87 Difference]: Start difference. First operand 178 states and 212 transitions. Second operand 22 states. [2020-10-14 17:48:35,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:48:35,652 INFO L93 Difference]: Finished difference Result 235 states and 282 transitions. [2020-10-14 17:48:35,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-14 17:48:35,655 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 76 [2020-10-14 17:48:35,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:48:35,656 INFO L225 Difference]: With dead ends: 235 [2020-10-14 17:48:35,656 INFO L226 Difference]: Without dead ends: 233 [2020-10-14 17:48:35,657 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=124, Invalid=1282, Unknown=0, NotChecked=0, Total=1406 [2020-10-14 17:48:35,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2020-10-14 17:48:35,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 155. [2020-10-14 17:48:35,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-10-14 17:48:35,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 177 transitions. [2020-10-14 17:48:35,674 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 177 transitions. Word has length 76 [2020-10-14 17:48:35,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:48:35,675 INFO L479 AbstractCegarLoop]: Abstraction has 155 states and 177 transitions. [2020-10-14 17:48:35,675 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-14 17:48:35,675 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 177 transitions. [2020-10-14 17:48:35,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-14 17:48:35,676 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:48:35,676 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:48:35,676 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-14 17:48:35,676 INFO L427 AbstractCegarLoop]: === Iteration 27 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:48:35,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:48:35,677 INFO L82 PathProgramCache]: Analyzing trace with hash -1428765025, now seen corresponding path program 16 times [2020-10-14 17:48:35,677 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:48:35,677 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1018796047] [2020-10-14 17:48:35,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:48:35,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:35,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:35,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:35,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:35,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-14 17:48:35,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:48:35,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 229 [2020-10-14 17:48:35,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:35,914 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:35,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 17:48:35,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 17:48:35,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 17:48:35,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:48:35,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:48:35,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:35,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:35,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:35,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:48:35,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:35,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:48:35,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:35,982 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:35,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:48:35,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:48:35,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:48:35,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:48:35,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 17:48:35,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:35,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:35,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:35,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:48:35,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:35,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:48:35,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:35,986 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:35,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:48:35,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:48:35,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:48:35,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:48:35,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-14 17:48:35,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:35,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:35,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:35,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:48:35,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:35,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:48:35,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:35,991 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:35,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:48:35,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:48:35,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:48:35,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:48:35,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-14 17:48:35,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:35,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:35,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:35,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:48:35,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:35,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:48:35,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:35,996 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:35,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:48:35,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:48:35,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:48:35,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:48:35,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-14 17:48:35,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:35,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:35,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:35,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:48:36,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:36,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:48:36,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:36,000 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:36,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:48:36,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:48:36,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:48:36,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:48:36,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-14 17:48:36,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:36,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:36,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:36,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:48:36,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:36,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:48:36,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:36,004 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:36,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:48:36,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:48:36,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:48:36,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:48:36,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-14 17:48:36,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:36,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:36,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:36,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:48:36,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:36,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:48:36,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:36,010 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:36,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:48:36,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:48:36,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:48:36,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:48:36,019 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 12 proven. 51 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2020-10-14 17:48:36,019 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1018796047] [2020-10-14 17:48:36,020 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:48:36,020 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 17:48:36,020 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470979863] [2020-10-14 17:48:36,021 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 17:48:36,021 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:48:36,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 17:48:36,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-14 17:48:36,022 INFO L87 Difference]: Start difference. First operand 155 states and 177 transitions. Second operand 10 states. [2020-10-14 17:48:36,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:48:36,153 INFO L93 Difference]: Finished difference Result 276 states and 312 transitions. [2020-10-14 17:48:36,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 17:48:36,153 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 81 [2020-10-14 17:48:36,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:48:36,154 INFO L225 Difference]: With dead ends: 276 [2020-10-14 17:48:36,155 INFO L226 Difference]: Without dead ends: 165 [2020-10-14 17:48:36,155 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-14 17:48:36,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-10-14 17:48:36,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 161. [2020-10-14 17:48:36,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-10-14 17:48:36,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 185 transitions. [2020-10-14 17:48:36,173 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 185 transitions. Word has length 81 [2020-10-14 17:48:36,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:48:36,174 INFO L479 AbstractCegarLoop]: Abstraction has 161 states and 185 transitions. [2020-10-14 17:48:36,174 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 17:48:36,174 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 185 transitions. [2020-10-14 17:48:36,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-14 17:48:36,175 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:48:36,175 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:48:36,175 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-14 17:48:36,176 INFO L427 AbstractCegarLoop]: === Iteration 28 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:48:36,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:48:36,176 INFO L82 PathProgramCache]: Analyzing trace with hash 2089164221, now seen corresponding path program 17 times [2020-10-14 17:48:36,176 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:48:36,176 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1265001713] [2020-10-14 17:48:36,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:48:36,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:36,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:36,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:36,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:37,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:37,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-14 17:48:37,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 17:48:37,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 952 [2020-10-14 17:48:37,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:37,136 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:37,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-14 17:48:37,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 17:48:37,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-14 17:48:37,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:48:37,420 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 35 [2020-10-14 17:48:37,538 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 36 [2020-10-14 17:48:37,655 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 36 [2020-10-14 17:48:37,788 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 36 [2020-10-14 17:48:37,918 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 36 [2020-10-14 17:48:38,052 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 32 [2020-10-14 17:48:38,213 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 44 [2020-10-14 17:48:38,361 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 41 [2020-10-14 17:48:39,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:48:39,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:39,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:39,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:39,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:48:39,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:39,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:48:39,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:39,073 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:39,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:48:39,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:48:39,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:48:39,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:48:39,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-14 17:48:39,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:39,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:39,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:39,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:48:39,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:39,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:48:39,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:39,078 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:39,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:48:39,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:48:39,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:48:39,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:48:39,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-14 17:48:39,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:39,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:39,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:39,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:48:39,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:39,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 17:48:39,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:39,085 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:39,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:48:39,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:48:39,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:48:39,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:48:39,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-14 17:48:39,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:39,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:39,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:39,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:48:39,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:39,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:48:39,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:39,092 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:39,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:48:39,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:48:39,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:48:39,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:48:39,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-14 17:48:39,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:39,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:39,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:39,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:48:39,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:39,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:48:39,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:39,098 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:39,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:48:39,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:48:39,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:48:39,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:48:39,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-14 17:48:39,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:39,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:39,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:39,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:48:39,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:39,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:48:39,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:39,104 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:39,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:48:39,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:48:39,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:48:39,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:48:39,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-14 17:48:39,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:39,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:39,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:39,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:48:39,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:39,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 17:48:39,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:39,111 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:39,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:48:39,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:48:39,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:48:39,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:48:39,146 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 12 proven. 142 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-10-14 17:48:39,146 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1265001713] [2020-10-14 17:48:39,147 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:48:39,147 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-14 17:48:39,147 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363003660] [2020-10-14 17:48:39,147 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-14 17:48:39,147 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:48:39,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-14 17:48:39,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=460, Unknown=0, NotChecked=0, Total=506 [2020-10-14 17:48:39,148 INFO L87 Difference]: Start difference. First operand 161 states and 185 transitions. Second operand 23 states. [2020-10-14 17:48:39,494 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 41 [2020-10-14 17:48:42,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:48:42,068 INFO L93 Difference]: Finished difference Result 247 states and 299 transitions. [2020-10-14 17:48:42,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-14 17:48:42,069 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 84 [2020-10-14 17:48:42,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:48:42,070 INFO L225 Difference]: With dead ends: 247 [2020-10-14 17:48:42,070 INFO L226 Difference]: Without dead ends: 245 [2020-10-14 17:48:42,071 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=130, Invalid=1592, Unknown=0, NotChecked=0, Total=1722 [2020-10-14 17:48:42,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2020-10-14 17:48:42,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 196. [2020-10-14 17:48:42,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-10-14 17:48:42,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 235 transitions. [2020-10-14 17:48:42,098 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 235 transitions. Word has length 84 [2020-10-14 17:48:42,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:48:42,098 INFO L479 AbstractCegarLoop]: Abstraction has 196 states and 235 transitions. [2020-10-14 17:48:42,098 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-14 17:48:42,098 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 235 transitions. [2020-10-14 17:48:42,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-14 17:48:42,100 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:48:42,100 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:48:42,100 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-14 17:48:42,100 INFO L427 AbstractCegarLoop]: === Iteration 29 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:48:42,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:48:42,101 INFO L82 PathProgramCache]: Analyzing trace with hash -1363316072, now seen corresponding path program 6 times [2020-10-14 17:48:42,101 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:48:42,101 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [364244576] [2020-10-14 17:48:42,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:48:42,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:42,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:42,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:42,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:42,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:42,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-14 17:48:42,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 17:48:42,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 878 [2020-10-14 17:48:42,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:42,987 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:42,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-14 17:48:42,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 17:48:42,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-14 17:48:42,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:48:43,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:48:43,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:43,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:43,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:43,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:48:43,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:43,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:48:43,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:43,680 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:43,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:48:43,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:48:43,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:48:43,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:48:43,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-14 17:48:43,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:43,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:43,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:43,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:48:43,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:43,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:48:43,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:43,685 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:43,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:48:43,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:48:43,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:48:43,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:48:43,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-14 17:48:43,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:43,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:43,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:43,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:48:43,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:43,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:48:43,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:43,689 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:43,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:48:43,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:48:43,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:48:43,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:48:43,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-14 17:48:43,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:43,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:43,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:43,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:48:43,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:43,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:48:43,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:43,696 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:43,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:48:43,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:48:43,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:48:43,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:48:43,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-14 17:48:43,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:43,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:43,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:43,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:48:43,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:43,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:48:43,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:43,701 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:43,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:48:43,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:48:43,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:48:43,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:48:43,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-14 17:48:43,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:43,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:43,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:43,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:48:43,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:43,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:48:43,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:43,705 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:43,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:48:43,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:48:43,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:48:43,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:48:43,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-14 17:48:43,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:43,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:43,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:43,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:48:43,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:43,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:48:43,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:43,710 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:43,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:48:43,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:48:43,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:48:43,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:48:43,727 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 12 proven. 142 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-10-14 17:48:43,728 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [364244576] [2020-10-14 17:48:43,728 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:48:43,728 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-14 17:48:43,728 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790549970] [2020-10-14 17:48:43,728 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-14 17:48:43,728 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:48:43,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-14 17:48:43,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=381, Unknown=0, NotChecked=0, Total=420 [2020-10-14 17:48:43,729 INFO L87 Difference]: Start difference. First operand 196 states and 235 transitions. Second operand 21 states. [2020-10-14 17:48:45,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:48:45,366 INFO L93 Difference]: Finished difference Result 256 states and 308 transitions. [2020-10-14 17:48:45,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-14 17:48:45,366 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 85 [2020-10-14 17:48:45,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:48:45,368 INFO L225 Difference]: With dead ends: 256 [2020-10-14 17:48:45,368 INFO L226 Difference]: Without dead ends: 254 [2020-10-14 17:48:45,369 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=83, Invalid=847, Unknown=0, NotChecked=0, Total=930 [2020-10-14 17:48:45,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2020-10-14 17:48:45,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 236. [2020-10-14 17:48:45,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 236 states. [2020-10-14 17:48:45,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 285 transitions. [2020-10-14 17:48:45,396 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 285 transitions. Word has length 85 [2020-10-14 17:48:45,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:48:45,396 INFO L479 AbstractCegarLoop]: Abstraction has 236 states and 285 transitions. [2020-10-14 17:48:45,397 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-14 17:48:45,397 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 285 transitions. [2020-10-14 17:48:45,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-14 17:48:45,398 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:48:45,398 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:48:45,399 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-14 17:48:45,399 INFO L427 AbstractCegarLoop]: === Iteration 30 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:48:45,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:48:45,399 INFO L82 PathProgramCache]: Analyzing trace with hash -1072625185, now seen corresponding path program 18 times [2020-10-14 17:48:45,399 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:48:45,399 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [544160159] [2020-10-14 17:48:45,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:48:45,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:45,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:45,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:45,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:46,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:46,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-14 17:48:46,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 17:48:46,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 779 [2020-10-14 17:48:46,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:46,187 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:46,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-14 17:48:46,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 17:48:46,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-14 17:48:46,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:48:46,467 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-10-14 17:48:47,180 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 44 [2020-10-14 17:48:47,327 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 40 [2020-10-14 17:48:48,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:48:48,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:48,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:48,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:48,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:48:48,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:48,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:48:48,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:48,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:48,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:48:48,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:48:48,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:48:48,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:48:48,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-14 17:48:48,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:48,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:48,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:48,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:48:48,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:48,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:48:48,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:48,165 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:48,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:48:48,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:48:48,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:48:48,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:48:48,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-14 17:48:48,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:48,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:48,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:48,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:48:48,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:48,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:48:48,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:48,172 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:48,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:48:48,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:48:48,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:48:48,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:48:48,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-14 17:48:48,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:48,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:48,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:48,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:48:48,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:48,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:48:48,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:48,177 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:48,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:48:48,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:48:48,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:48:48,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:48:48,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-14 17:48:48,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:48,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:48,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:48,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:48:48,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:48,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:48:48,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:48,182 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:48,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:48:48,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:48:48,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:48:48,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:48:48,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-14 17:48:48,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:48,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:48,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:48,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:48:48,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:48,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:48:48,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:48,187 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:48,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:48:48,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:48:48,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:48:48,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:48:48,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-14 17:48:48,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:48,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:48,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:48,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:48:48,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:48,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:48:48,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:48,192 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:48,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:48:48,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:48:48,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:48:48,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:48:48,223 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 12 proven. 164 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-10-14 17:48:48,224 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [544160159] [2020-10-14 17:48:48,224 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:48:48,224 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-14 17:48:48,224 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502095773] [2020-10-14 17:48:48,224 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-14 17:48:48,225 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:48:48,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-14 17:48:48,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=501, Unknown=0, NotChecked=0, Total=552 [2020-10-14 17:48:48,225 INFO L87 Difference]: Start difference. First operand 236 states and 285 transitions. Second operand 24 states. [2020-10-14 17:48:49,617 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 46 [2020-10-14 17:48:51,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:48:51,611 INFO L93 Difference]: Finished difference Result 327 states and 395 transitions. [2020-10-14 17:48:51,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-14 17:48:51,615 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 87 [2020-10-14 17:48:51,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:48:51,617 INFO L225 Difference]: With dead ends: 327 [2020-10-14 17:48:51,617 INFO L226 Difference]: Without dead ends: 325 [2020-10-14 17:48:51,618 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=143, Invalid=1663, Unknown=0, NotChecked=0, Total=1806 [2020-10-14 17:48:51,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2020-10-14 17:48:51,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 244. [2020-10-14 17:48:51,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244 states. [2020-10-14 17:48:51,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 294 transitions. [2020-10-14 17:48:51,659 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 294 transitions. Word has length 87 [2020-10-14 17:48:51,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:48:51,659 INFO L479 AbstractCegarLoop]: Abstraction has 244 states and 294 transitions. [2020-10-14 17:48:51,659 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-14 17:48:51,659 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 294 transitions. [2020-10-14 17:48:51,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-14 17:48:51,661 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:48:51,661 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:48:51,661 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-14 17:48:51,661 INFO L427 AbstractCegarLoop]: === Iteration 31 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:48:51,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:48:51,662 INFO L82 PathProgramCache]: Analyzing trace with hash 547962616, now seen corresponding path program 7 times [2020-10-14 17:48:51,662 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:48:51,662 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [613884448] [2020-10-14 17:48:51,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:48:51,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:51,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:51,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:52,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:52,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:52,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-14 17:48:52,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 17:48:52,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 685 [2020-10-14 17:48:52,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:52,355 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:52,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-14 17:48:52,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 17:48:52,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-14 17:48:52,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:48:53,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:48:53,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:53,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:53,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:53,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:48:53,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:53,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:48:53,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:53,236 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:53,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:48:53,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:48:53,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:48:53,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:48:53,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-14 17:48:53,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:53,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:53,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:53,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:48:53,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:53,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:48:53,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:53,241 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:53,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:48:53,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:48:53,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:48:53,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:48:53,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-14 17:48:53,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:53,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:53,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:53,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:48:53,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:53,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 17:48:53,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:53,249 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:53,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:48:53,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:48:53,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:48:53,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:48:53,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-14 17:48:53,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:53,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:53,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:53,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:48:53,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:53,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:48:53,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:53,254 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:53,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:48:53,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:48:53,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:48:53,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:48:53,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-14 17:48:53,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:53,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:53,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:53,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:48:53,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:53,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:48:53,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:53,259 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:53,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:48:53,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:48:53,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:48:53,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:48:53,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-14 17:48:53,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:53,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:53,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:53,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:48:53,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:53,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:48:53,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:53,265 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:53,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:48:53,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:48:53,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:48:53,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:48:53,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-14 17:48:53,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:53,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:53,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:53,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:48:53,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:53,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:48:53,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:53,272 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:53,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:48:53,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:48:53,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:48:53,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:48:53,304 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 13 proven. 163 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-10-14 17:48:53,304 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [613884448] [2020-10-14 17:48:53,304 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:48:53,304 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-14 17:48:53,304 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383133401] [2020-10-14 17:48:53,305 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-14 17:48:53,305 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:48:53,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-14 17:48:53,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2020-10-14 17:48:53,306 INFO L87 Difference]: Start difference. First operand 244 states and 294 transitions. Second operand 22 states. [2020-10-14 17:48:55,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:48:55,111 INFO L93 Difference]: Finished difference Result 272 states and 322 transitions. [2020-10-14 17:48:55,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-14 17:48:55,112 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 88 [2020-10-14 17:48:55,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:48:55,114 INFO L225 Difference]: With dead ends: 272 [2020-10-14 17:48:55,114 INFO L226 Difference]: Without dead ends: 270 [2020-10-14 17:48:55,114 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=97, Invalid=895, Unknown=0, NotChecked=0, Total=992 [2020-10-14 17:48:55,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2020-10-14 17:48:55,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 177. [2020-10-14 17:48:55,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2020-10-14 17:48:55,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 202 transitions. [2020-10-14 17:48:55,138 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 202 transitions. Word has length 88 [2020-10-14 17:48:55,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:48:55,138 INFO L479 AbstractCegarLoop]: Abstraction has 177 states and 202 transitions. [2020-10-14 17:48:55,138 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-14 17:48:55,138 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 202 transitions. [2020-10-14 17:48:55,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-14 17:48:55,139 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:48:55,140 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:48:55,140 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-14 17:48:55,140 INFO L427 AbstractCegarLoop]: === Iteration 32 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:48:55,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:48:55,140 INFO L82 PathProgramCache]: Analyzing trace with hash -441141567, now seen corresponding path program 19 times [2020-10-14 17:48:55,141 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:48:55,141 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [97244842] [2020-10-14 17:48:55,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:48:55,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:55,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:55,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:55,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:55,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-14 17:48:55,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:48:55,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 257 [2020-10-14 17:48:55,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:55,405 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:55,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 17:48:55,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 17:48:55,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 17:48:55,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:48:55,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:48:55,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:55,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:55,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:55,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:48:55,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:55,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:48:55,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:55,483 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:55,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:48:55,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:48:55,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:48:55,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:48:55,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-14 17:48:55,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:55,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:55,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:55,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:48:55,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:55,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:48:55,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:55,486 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:55,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:48:55,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:48:55,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:48:55,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:48:55,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-14 17:48:55,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:55,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:55,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:55,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:48:55,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:55,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:48:55,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:55,490 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:55,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:48:55,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:48:55,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:48:55,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:48:55,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-14 17:48:55,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:55,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:55,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:55,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:48:55,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:55,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:48:55,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:55,494 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:55,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:48:55,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:48:55,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:48:55,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:48:55,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-14 17:48:55,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:55,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:55,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:55,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:48:55,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:55,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:48:55,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:55,497 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:55,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:48:55,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:48:55,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:48:55,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:48:55,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-14 17:48:55,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:55,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:55,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:55,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:48:55,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:55,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:48:55,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:55,500 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:55,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:48:55,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:48:55,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:48:55,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:48:55,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-14 17:48:55,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:55,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:55,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:55,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:48:55,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:55,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:48:55,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:55,504 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:55,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:48:55,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:48:55,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:48:55,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:48:55,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-14 17:48:55,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:55,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:55,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:55,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:48:55,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:55,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:48:55,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:55,508 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:55,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:48:55,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:48:55,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:48:55,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:48:55,513 INFO L134 CoverageAnalysis]: Checked inductivity of 266 backedges. 14 proven. 70 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2020-10-14 17:48:55,513 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [97244842] [2020-10-14 17:48:55,513 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:48:55,513 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 17:48:55,513 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835658777] [2020-10-14 17:48:55,514 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 17:48:55,514 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:48:55,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 17:48:55,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-14 17:48:55,514 INFO L87 Difference]: Start difference. First operand 177 states and 202 transitions. Second operand 11 states. [2020-10-14 17:48:55,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:48:55,648 INFO L93 Difference]: Finished difference Result 314 states and 354 transitions. [2020-10-14 17:48:55,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 17:48:55,649 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 92 [2020-10-14 17:48:55,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:48:55,650 INFO L225 Difference]: With dead ends: 314 [2020-10-14 17:48:55,650 INFO L226 Difference]: Without dead ends: 187 [2020-10-14 17:48:55,651 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-14 17:48:55,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2020-10-14 17:48:55,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 183. [2020-10-14 17:48:55,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2020-10-14 17:48:55,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 210 transitions. [2020-10-14 17:48:55,673 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 210 transitions. Word has length 92 [2020-10-14 17:48:55,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:48:55,673 INFO L479 AbstractCegarLoop]: Abstraction has 183 states and 210 transitions. [2020-10-14 17:48:55,674 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 17:48:55,674 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 210 transitions. [2020-10-14 17:48:55,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-14 17:48:55,675 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:48:55,675 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:48:55,675 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-14 17:48:55,675 INFO L427 AbstractCegarLoop]: === Iteration 33 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:48:55,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:48:55,676 INFO L82 PathProgramCache]: Analyzing trace with hash -961912605, now seen corresponding path program 20 times [2020-10-14 17:48:55,676 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:48:55,676 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [245756129] [2020-10-14 17:48:55,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:48:55,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:55,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:55,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:55,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:56,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:56,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-14 17:48:56,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 17:48:56,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 758 [2020-10-14 17:48:56,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:56,442 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:56,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-14 17:48:56,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 17:48:56,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-14 17:48:56,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:48:56,742 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 29 [2020-10-14 17:48:56,872 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 30 [2020-10-14 17:48:57,017 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 30 [2020-10-14 17:48:57,175 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 30 [2020-10-14 17:48:57,330 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 30 [2020-10-14 17:48:57,716 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 42 [2020-10-14 17:48:57,866 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 38 [2020-10-14 17:48:58,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:48:58,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:58,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:58,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:58,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:48:58,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:58,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:48:58,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:58,524 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:58,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:48:58,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:48:58,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:48:58,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:48:58,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-14 17:48:58,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:58,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:58,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:58,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:48:58,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:58,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:48:58,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:58,530 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:58,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:48:58,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:48:58,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:48:58,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:48:58,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-14 17:48:58,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:58,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:58,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:58,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:48:58,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:58,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:48:58,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:58,536 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:58,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:48:58,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:48:58,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:48:58,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:48:58,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-14 17:48:58,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:58,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:58,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:58,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:48:58,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:58,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:48:58,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:58,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:58,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:48:58,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:48:58,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:48:58,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:48:58,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-14 17:48:58,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:58,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:58,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:58,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:48:58,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:58,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:48:58,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:58,544 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:58,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:48:58,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:48:58,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:48:58,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:48:58,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-14 17:48:58,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:58,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:58,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:58,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:48:58,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:58,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:48:58,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:58,548 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:58,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:48:58,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:48:58,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:48:58,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:48:58,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-14 17:48:58,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:58,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:58,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:58,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:48:58,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:58,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:48:58,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:58,553 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:58,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:48:58,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:48:58,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:48:58,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:48:58,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-14 17:48:58,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:58,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:58,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:58,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:48:58,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:58,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:48:58,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:58,558 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:58,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:48:58,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:48:58,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:48:58,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:48:58,591 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 14 proven. 190 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-10-14 17:48:58,591 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [245756129] [2020-10-14 17:48:58,591 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:48:58,592 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-14 17:48:58,592 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265196934] [2020-10-14 17:48:58,592 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-14 17:48:58,592 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:48:58,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-14 17:48:58,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=549, Unknown=0, NotChecked=0, Total=600 [2020-10-14 17:48:58,593 INFO L87 Difference]: Start difference. First operand 183 states and 210 transitions. Second operand 25 states. [2020-10-14 17:49:01,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:49:01,641 INFO L93 Difference]: Finished difference Result 278 states and 336 transitions. [2020-10-14 17:49:01,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-14 17:49:01,649 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 95 [2020-10-14 17:49:01,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:49:01,653 INFO L225 Difference]: With dead ends: 278 [2020-10-14 17:49:01,653 INFO L226 Difference]: Without dead ends: 276 [2020-10-14 17:49:01,657 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 274 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=139, Invalid=1841, Unknown=0, NotChecked=0, Total=1980 [2020-10-14 17:49:01,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2020-10-14 17:49:01,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 222. [2020-10-14 17:49:01,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222 states. [2020-10-14 17:49:01,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 266 transitions. [2020-10-14 17:49:01,692 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 266 transitions. Word has length 95 [2020-10-14 17:49:01,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:49:01,693 INFO L479 AbstractCegarLoop]: Abstraction has 222 states and 266 transitions. [2020-10-14 17:49:01,693 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-14 17:49:01,693 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 266 transitions. [2020-10-14 17:49:01,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-14 17:49:01,694 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:49:01,694 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:49:01,695 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-14 17:49:01,695 INFO L427 AbstractCegarLoop]: === Iteration 34 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:49:01,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:49:01,695 INFO L82 PathProgramCache]: Analyzing trace with hash -1824659541, now seen corresponding path program 8 times [2020-10-14 17:49:01,695 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:49:01,695 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [302305946] [2020-10-14 17:49:01,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:49:01,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:01,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:01,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:02,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:03,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:03,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-14 17:49:03,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 17:49:03,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1391 [2020-10-14 17:49:03,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:03,094 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:03,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-14 17:49:03,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 17:49:03,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-14 17:49:03,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:03,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:49:03,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:03,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:03,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:03,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:49:03,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:03,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:49:03,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:03,982 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:03,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:49:03,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:49:03,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:49:03,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:03,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-14 17:49:03,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:03,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:03,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:03,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:49:03,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:03,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:49:03,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:03,986 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:03,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:49:03,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:49:03,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:49:03,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:03,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-14 17:49:03,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:03,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:03,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:03,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:49:03,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:03,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:49:03,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:03,991 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:03,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:49:03,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:49:03,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:49:03,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:03,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-14 17:49:03,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:03,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:03,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:03,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:49:03,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:03,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:49:03,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:03,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:03,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:49:03,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:49:03,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:49:03,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:03,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-14 17:49:03,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:03,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:04,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:04,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:49:04,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:04,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:49:04,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:04,002 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:04,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:49:04,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:49:04,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:49:04,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:04,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-14 17:49:04,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:04,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:04,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:04,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:49:04,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:04,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:49:04,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:04,008 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:04,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:49:04,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:49:04,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:49:04,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:04,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-14 17:49:04,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:04,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:04,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:04,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:49:04,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:04,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:49:04,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:04,013 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:04,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:49:04,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:49:04,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:49:04,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:04,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-14 17:49:04,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:04,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:04,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:04,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:49:04,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:04,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:49:04,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:04,018 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:04,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:49:04,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:49:04,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:49:04,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:04,038 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 14 proven. 190 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-10-14 17:49:04,038 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [302305946] [2020-10-14 17:49:04,039 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:49:04,039 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-14 17:49:04,039 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738191457] [2020-10-14 17:49:04,039 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-14 17:49:04,039 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:49:04,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-14 17:49:04,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=463, Unknown=0, NotChecked=0, Total=506 [2020-10-14 17:49:04,040 INFO L87 Difference]: Start difference. First operand 222 states and 266 transitions. Second operand 23 states. [2020-10-14 17:49:06,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:49:06,106 INFO L93 Difference]: Finished difference Result 249 states and 296 transitions. [2020-10-14 17:49:06,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-14 17:49:06,107 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 96 [2020-10-14 17:49:06,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:49:06,108 INFO L225 Difference]: With dead ends: 249 [2020-10-14 17:49:06,108 INFO L226 Difference]: Without dead ends: 247 [2020-10-14 17:49:06,109 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=96, Invalid=1094, Unknown=0, NotChecked=0, Total=1190 [2020-10-14 17:49:06,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2020-10-14 17:49:06,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 230. [2020-10-14 17:49:06,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2020-10-14 17:49:06,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 274 transitions. [2020-10-14 17:49:06,141 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 274 transitions. Word has length 96 [2020-10-14 17:49:06,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:49:06,142 INFO L479 AbstractCegarLoop]: Abstraction has 230 states and 274 transitions. [2020-10-14 17:49:06,142 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-14 17:49:06,142 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 274 transitions. [2020-10-14 17:49:06,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-14 17:49:06,144 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:49:06,144 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:49:06,144 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-14 17:49:06,144 INFO L427 AbstractCegarLoop]: === Iteration 35 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:49:06,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:49:06,145 INFO L82 PathProgramCache]: Analyzing trace with hash -1830032511, now seen corresponding path program 21 times [2020-10-14 17:49:06,145 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:49:06,145 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2052337582] [2020-10-14 17:49:06,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:49:06,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:06,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:06,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:06,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:06,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:06,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-14 17:49:06,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 17:49:06,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 734 [2020-10-14 17:49:06,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:06,886 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:06,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-14 17:49:06,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 17:49:06,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-14 17:49:06,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:07,071 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 31 [2020-10-14 17:49:07,201 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 37 [2020-10-14 17:49:07,374 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 34 [2020-10-14 17:49:07,541 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 32 [2020-10-14 17:49:07,718 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 34 [2020-10-14 17:49:07,862 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 37 [2020-10-14 17:49:08,011 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 37 [2020-10-14 17:49:08,208 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 34 [2020-10-14 17:49:08,453 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 48 [2020-10-14 17:49:08,690 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 44 [2020-10-14 17:49:08,855 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 38 [2020-10-14 17:49:09,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:49:09,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:09,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:09,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:09,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:49:09,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:09,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:49:09,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:09,519 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:09,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:49:09,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:49:09,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:49:09,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:09,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-14 17:49:09,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:09,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:09,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:09,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:49:09,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:09,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:49:09,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:09,524 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:09,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:49:09,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:49:09,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:49:09,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:09,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-14 17:49:09,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:09,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:09,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:09,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:49:09,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:09,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:49:09,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:09,528 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:09,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:49:09,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:49:09,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:49:09,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:09,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-14 17:49:09,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:09,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:09,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:09,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:49:09,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:09,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:49:09,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:09,533 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:09,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:49:09,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:49:09,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:49:09,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:09,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-14 17:49:09,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:09,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:09,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:09,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:49:09,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:09,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:49:09,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:09,537 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:09,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:49:09,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:49:09,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:49:09,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:09,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-14 17:49:09,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:09,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:09,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:09,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:49:09,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:09,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:49:09,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:09,541 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:09,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:49:09,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:49:09,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:49:09,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:09,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-14 17:49:09,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:09,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:09,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:09,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:49:09,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:09,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:49:09,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:09,546 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:09,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:49:09,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:49:09,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:49:09,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:09,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-14 17:49:09,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:09,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:09,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:09,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:49:09,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:09,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:49:09,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:09,550 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:09,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:49:09,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:49:09,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:49:09,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:09,593 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 14 proven. 215 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-10-14 17:49:09,594 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2052337582] [2020-10-14 17:49:09,594 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:49:09,594 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-14 17:49:09,594 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486583179] [2020-10-14 17:49:09,595 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-14 17:49:09,595 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:49:09,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-14 17:49:09,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=596, Unknown=0, NotChecked=0, Total=650 [2020-10-14 17:49:09,596 INFO L87 Difference]: Start difference. First operand 230 states and 274 transitions. Second operand 26 states. [2020-10-14 17:49:11,275 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 49 [2020-10-14 17:49:12,034 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 44 [2020-10-14 17:49:12,521 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 44 [2020-10-14 17:49:13,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:49:13,827 INFO L93 Difference]: Finished difference Result 297 states and 356 transitions. [2020-10-14 17:49:13,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-14 17:49:13,827 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 98 [2020-10-14 17:49:13,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:49:13,829 INFO L225 Difference]: With dead ends: 297 [2020-10-14 17:49:13,829 INFO L226 Difference]: Without dead ends: 295 [2020-10-14 17:49:13,831 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 296 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=155, Invalid=2007, Unknown=0, NotChecked=0, Total=2162 [2020-10-14 17:49:13,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2020-10-14 17:49:13,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 199. [2020-10-14 17:49:13,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2020-10-14 17:49:13,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 227 transitions. [2020-10-14 17:49:13,859 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 227 transitions. Word has length 98 [2020-10-14 17:49:13,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:49:13,860 INFO L479 AbstractCegarLoop]: Abstraction has 199 states and 227 transitions. [2020-10-14 17:49:13,860 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-14 17:49:13,860 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 227 transitions. [2020-10-14 17:49:13,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-14 17:49:13,861 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:49:13,861 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:49:13,862 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-14 17:49:13,862 INFO L427 AbstractCegarLoop]: === Iteration 36 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:49:13,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:49:13,862 INFO L82 PathProgramCache]: Analyzing trace with hash -1223789593, now seen corresponding path program 22 times [2020-10-14 17:49:13,862 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:49:13,863 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [682288612] [2020-10-14 17:49:13,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:49:13,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:13,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:13,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:14,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:14,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-14 17:49:14,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:49:14,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 264 [2020-10-14 17:49:14,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:14,135 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:14,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 17:49:14,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 17:49:14,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-14 17:49:14,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:14,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:49:14,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:14,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:14,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:14,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:49:14,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:14,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:49:14,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:14,226 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:14,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:49:14,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:49:14,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:49:14,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:14,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-14 17:49:14,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:14,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:14,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:14,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:49:14,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:14,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:49:14,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:14,230 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:14,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:49:14,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:49:14,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:49:14,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:14,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-14 17:49:14,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:14,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:14,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:14,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:49:14,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:14,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:49:14,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:14,233 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:14,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:49:14,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:49:14,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:49:14,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:14,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-14 17:49:14,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:14,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:14,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:14,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:49:14,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:14,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:49:14,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:14,237 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:14,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:49:14,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:49:14,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:49:14,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:14,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-14 17:49:14,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:14,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:14,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:14,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:49:14,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:14,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:49:14,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:14,240 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:14,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:49:14,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:49:14,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:49:14,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:14,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-14 17:49:14,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:14,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:14,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:14,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:49:14,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:14,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:49:14,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:14,244 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:14,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:49:14,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:49:14,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:49:14,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:14,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-14 17:49:14,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:14,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:14,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:14,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:49:14,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:14,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:49:14,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:14,248 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:14,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:49:14,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:49:14,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:49:14,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:14,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-14 17:49:14,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:14,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:14,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:14,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:49:14,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:14,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:49:14,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:14,252 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:14,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:49:14,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:49:14,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:49:14,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:14,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-14 17:49:14,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:14,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:14,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:14,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:49:14,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:14,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:49:14,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:14,256 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:14,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:49:14,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:49:14,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:49:14,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:14,264 INFO L134 CoverageAnalysis]: Checked inductivity of 348 backedges. 16 proven. 92 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2020-10-14 17:49:14,264 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [682288612] [2020-10-14 17:49:14,264 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:49:14,264 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 17:49:14,265 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429707406] [2020-10-14 17:49:14,265 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 17:49:14,265 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:49:14,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 17:49:14,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-14 17:49:14,266 INFO L87 Difference]: Start difference. First operand 199 states and 227 transitions. Second operand 12 states. [2020-10-14 17:49:14,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:49:14,382 INFO L93 Difference]: Finished difference Result 352 states and 396 transitions. [2020-10-14 17:49:14,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 17:49:14,383 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 103 [2020-10-14 17:49:14,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:49:14,384 INFO L225 Difference]: With dead ends: 352 [2020-10-14 17:49:14,385 INFO L226 Difference]: Without dead ends: 209 [2020-10-14 17:49:14,386 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-14 17:49:14,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2020-10-14 17:49:14,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 205. [2020-10-14 17:49:14,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2020-10-14 17:49:14,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 235 transitions. [2020-10-14 17:49:14,414 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 235 transitions. Word has length 103 [2020-10-14 17:49:14,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:49:14,414 INFO L479 AbstractCegarLoop]: Abstraction has 205 states and 235 transitions. [2020-10-14 17:49:14,414 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 17:49:14,415 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 235 transitions. [2020-10-14 17:49:14,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-14 17:49:14,416 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:49:14,416 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:49:14,416 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-14 17:49:14,416 INFO L427 AbstractCegarLoop]: === Iteration 37 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:49:14,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:49:14,417 INFO L82 PathProgramCache]: Analyzing trace with hash 409108613, now seen corresponding path program 23 times [2020-10-14 17:49:14,417 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:49:14,417 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2107605503] [2020-10-14 17:49:14,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:49:14,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:14,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:14,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:14,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:15,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:15,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-14 17:49:15,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 17:49:15,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1120 [2020-10-14 17:49:15,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:15,545 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:15,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-14 17:49:15,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 17:49:15,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-14 17:49:15,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:16,552 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 41 [2020-10-14 17:49:17,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:49:17,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:17,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:17,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:17,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:49:17,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:17,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:49:17,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:17,631 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:17,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:49:17,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:49:17,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:49:17,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:17,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-14 17:49:17,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:17,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:17,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:17,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:49:17,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:17,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:49:17,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:17,636 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:17,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:49:17,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:49:17,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:49:17,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:17,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-14 17:49:17,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:17,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:17,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:17,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:49:17,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:17,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:49:17,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:17,640 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:17,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:49:17,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:49:17,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:49:17,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:17,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-14 17:49:17,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:17,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:17,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:17,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:49:17,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:17,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:49:17,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:17,645 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:17,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:49:17,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:49:17,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:49:17,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:17,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-14 17:49:17,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:17,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:17,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:17,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:49:17,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:17,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:49:17,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:17,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:17,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:49:17,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:49:17,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:49:17,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:17,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-14 17:49:17,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:17,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:17,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:17,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:49:17,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:17,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:49:17,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:17,657 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:17,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:49:17,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:49:17,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:49:17,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:17,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-14 17:49:17,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:17,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:17,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:17,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:49:17,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:17,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:49:17,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:17,662 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:17,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:49:17,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:49:17,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:49:17,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:17,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-14 17:49:17,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:17,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:17,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:17,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:49:17,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:17,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 17:49:17,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:17,670 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:17,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:49:17,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:49:17,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:49:17,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:17,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-14 17:49:17,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:17,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:17,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:17,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:49:17,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:17,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:49:17,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:17,678 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:17,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:49:17,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:49:17,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:49:17,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:17,724 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 16 proven. 245 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2020-10-14 17:49:17,725 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2107605503] [2020-10-14 17:49:17,725 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:49:17,725 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-14 17:49:17,725 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927699087] [2020-10-14 17:49:17,726 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-14 17:49:17,726 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:49:17,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-14 17:49:17,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=647, Unknown=0, NotChecked=0, Total=702 [2020-10-14 17:49:17,727 INFO L87 Difference]: Start difference. First operand 205 states and 235 transitions. Second operand 27 states. [2020-10-14 17:49:20,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:49:20,717 INFO L93 Difference]: Finished difference Result 309 states and 373 transitions. [2020-10-14 17:49:20,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-14 17:49:20,718 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 106 [2020-10-14 17:49:20,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:49:20,720 INFO L225 Difference]: With dead ends: 309 [2020-10-14 17:49:20,720 INFO L226 Difference]: Without dead ends: 307 [2020-10-14 17:49:20,722 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=151, Invalid=2201, Unknown=0, NotChecked=0, Total=2352 [2020-10-14 17:49:20,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2020-10-14 17:49:20,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 248. [2020-10-14 17:49:20,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 248 states. [2020-10-14 17:49:20,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 297 transitions. [2020-10-14 17:49:20,766 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 297 transitions. Word has length 106 [2020-10-14 17:49:20,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:49:20,767 INFO L479 AbstractCegarLoop]: Abstraction has 248 states and 297 transitions. [2020-10-14 17:49:20,767 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-14 17:49:20,767 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 297 transitions. [2020-10-14 17:49:20,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-14 17:49:20,769 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:49:20,769 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:49:20,769 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-14 17:49:20,769 INFO L427 AbstractCegarLoop]: === Iteration 38 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:49:20,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:49:20,769 INFO L82 PathProgramCache]: Analyzing trace with hash 1379747070, now seen corresponding path program 9 times [2020-10-14 17:49:20,770 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:49:20,770 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1169828790] [2020-10-14 17:49:20,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:49:20,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:20,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:20,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:21,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:21,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:21,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-14 17:49:21,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 17:49:21,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1050 [2020-10-14 17:49:21,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:21,831 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:21,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-14 17:49:21,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 17:49:21,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-14 17:49:21,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:23,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:49:23,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:23,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:23,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:23,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:49:23,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:23,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:49:23,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:23,165 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:23,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:49:23,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:49:23,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:49:23,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:23,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-14 17:49:23,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:23,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:23,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:23,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:49:23,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:23,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:49:23,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:23,171 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:23,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:49:23,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:49:23,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:49:23,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:23,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-14 17:49:23,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:23,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:23,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:23,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:49:23,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:23,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:49:23,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:23,178 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:23,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:49:23,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:49:23,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:49:23,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:23,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-14 17:49:23,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:23,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:23,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:23,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:49:23,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:23,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:49:23,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:23,183 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:23,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:49:23,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:49:23,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:49:23,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:23,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-14 17:49:23,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:23,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:23,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:23,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:49:23,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:23,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:49:23,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:23,188 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:23,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:49:23,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:49:23,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:49:23,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:23,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-14 17:49:23,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:23,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:23,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:23,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:49:23,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:23,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:49:23,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:23,192 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:23,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:49:23,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:49:23,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:49:23,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:23,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-14 17:49:23,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:23,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:23,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:23,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:49:23,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:23,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:49:23,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:23,196 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:23,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:49:23,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:49:23,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:49:23,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:23,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-14 17:49:23,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:23,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:23,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:23,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:49:23,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:23,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:49:23,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:23,200 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:23,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:49:23,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:49:23,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:49:23,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:23,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 17:49:23,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:23,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:23,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:23,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:49:23,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:23,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:49:23,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:23,206 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:23,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:49:23,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:49:23,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:49:23,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:23,237 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 16 proven. 245 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2020-10-14 17:49:23,237 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1169828790] [2020-10-14 17:49:23,238 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:49:23,238 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-14 17:49:23,238 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282771737] [2020-10-14 17:49:23,238 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-14 17:49:23,239 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:49:23,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-14 17:49:23,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=552, Unknown=0, NotChecked=0, Total=600 [2020-10-14 17:49:23,239 INFO L87 Difference]: Start difference. First operand 248 states and 297 transitions. Second operand 25 states. [2020-10-14 17:49:25,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:49:25,851 INFO L93 Difference]: Finished difference Result 276 states and 328 transitions. [2020-10-14 17:49:25,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-14 17:49:25,851 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 107 [2020-10-14 17:49:25,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:49:25,854 INFO L225 Difference]: With dead ends: 276 [2020-10-14 17:49:25,854 INFO L226 Difference]: Without dead ends: 274 [2020-10-14 17:49:25,855 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=101, Invalid=1231, Unknown=0, NotChecked=0, Total=1332 [2020-10-14 17:49:25,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2020-10-14 17:49:25,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 256. [2020-10-14 17:49:25,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 256 states. [2020-10-14 17:49:25,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 305 transitions. [2020-10-14 17:49:25,881 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 305 transitions. Word has length 107 [2020-10-14 17:49:25,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:49:25,882 INFO L479 AbstractCegarLoop]: Abstraction has 256 states and 305 transitions. [2020-10-14 17:49:25,882 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-14 17:49:25,882 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 305 transitions. [2020-10-14 17:49:25,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-14 17:49:25,883 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:49:25,883 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:49:25,883 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-14 17:49:25,884 INFO L427 AbstractCegarLoop]: === Iteration 39 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:49:25,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:49:25,884 INFO L82 PathProgramCache]: Analyzing trace with hash 1279969063, now seen corresponding path program 24 times [2020-10-14 17:49:25,884 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:49:25,884 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1849274094] [2020-10-14 17:49:25,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:49:25,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:25,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:25,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:26,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:26,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:26,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-14 17:49:26,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 17:49:26,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 788 [2020-10-14 17:49:26,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:26,678 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:26,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-14 17:49:26,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 17:49:26,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-14 17:49:26,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:26,952 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 31 [2020-10-14 17:49:27,128 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 33 [2020-10-14 17:49:27,332 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 37 [2020-10-14 17:49:27,528 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 37 [2020-10-14 17:49:27,662 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 34 [2020-10-14 17:49:27,824 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 37 [2020-10-14 17:49:27,973 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 37 [2020-10-14 17:49:28,128 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 37 [2020-10-14 17:49:28,273 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 33 [2020-10-14 17:49:28,464 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 47 [2020-10-14 17:49:28,709 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 43 [2020-10-14 17:49:29,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:49:29,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:29,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:29,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:29,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:49:29,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:29,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:49:29,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:29,616 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:29,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:49:29,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:49:29,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:49:29,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:29,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-14 17:49:29,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:29,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:29,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:29,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:49:29,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:29,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:49:29,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:29,620 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:29,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:49:29,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:49:29,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:49:29,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:29,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-14 17:49:29,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:29,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:29,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:29,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:49:29,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:29,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:49:29,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:29,624 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:29,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:49:29,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:49:29,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:49:29,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:29,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-14 17:49:29,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:29,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:29,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:29,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:49:29,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:29,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:49:29,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:29,628 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:29,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:49:29,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:49:29,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:49:29,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:29,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-14 17:49:29,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:29,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:29,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:29,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:49:29,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:29,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:49:29,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:29,632 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:29,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:49:29,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:49:29,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:49:29,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:29,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-14 17:49:29,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:29,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:29,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:29,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:49:29,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:29,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:49:29,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:29,636 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:29,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:49:29,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:49:29,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:49:29,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:29,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-14 17:49:29,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:29,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:29,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:29,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:49:29,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:29,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:49:29,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:29,640 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:29,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:49:29,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:49:29,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:49:29,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:29,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-14 17:49:29,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:29,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:29,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:29,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:49:29,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:29,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:49:29,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:29,644 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:29,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:49:29,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:49:29,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:49:29,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:29,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-14 17:49:29,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:29,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:29,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:29,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:49:29,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:29,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:49:29,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:29,648 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:29,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:49:29,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:49:29,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:49:29,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:29,697 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 16 proven. 273 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2020-10-14 17:49:29,697 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1849274094] [2020-10-14 17:49:29,697 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:49:29,698 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-14 17:49:29,698 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802127257] [2020-10-14 17:49:29,698 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-14 17:49:29,698 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:49:29,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-14 17:49:29,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=698, Unknown=0, NotChecked=0, Total=756 [2020-10-14 17:49:29,699 INFO L87 Difference]: Start difference. First operand 256 states and 305 transitions. Second operand 28 states. [2020-10-14 17:49:30,298 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 44 [2020-10-14 17:49:30,883 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 44 [2020-10-14 17:49:31,686 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 48 [2020-10-14 17:49:34,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:49:34,548 INFO L93 Difference]: Finished difference Result 328 states and 393 transitions. [2020-10-14 17:49:34,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-14 17:49:34,549 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 109 [2020-10-14 17:49:34,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:49:34,552 INFO L225 Difference]: With dead ends: 328 [2020-10-14 17:49:34,553 INFO L226 Difference]: Without dead ends: 326 [2020-10-14 17:49:34,554 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 347 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=168, Invalid=2382, Unknown=0, NotChecked=0, Total=2550 [2020-10-14 17:49:34,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2020-10-14 17:49:34,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 221. [2020-10-14 17:49:34,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2020-10-14 17:49:34,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 252 transitions. [2020-10-14 17:49:34,599 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 252 transitions. Word has length 109 [2020-10-14 17:49:34,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:49:34,599 INFO L479 AbstractCegarLoop]: Abstraction has 221 states and 252 transitions. [2020-10-14 17:49:34,599 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-14 17:49:34,600 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 252 transitions. [2020-10-14 17:49:34,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-14 17:49:34,600 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:49:34,601 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:49:34,601 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-14 17:49:34,601 INFO L427 AbstractCegarLoop]: === Iteration 40 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:49:34,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:49:34,601 INFO L82 PathProgramCache]: Analyzing trace with hash -309997175, now seen corresponding path program 25 times [2020-10-14 17:49:34,602 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:49:34,602 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1435053494] [2020-10-14 17:49:34,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:49:34,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:34,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:34,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:35,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:35,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-14 17:49:35,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:49:35,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 521 [2020-10-14 17:49:35,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:35,137 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:35,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 17:49:35,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 17:49:35,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 17:49:35,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:35,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:49:35,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:35,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:35,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:35,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:49:35,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:35,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:49:35,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:35,254 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:35,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:49:35,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:49:35,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:49:35,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:35,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-14 17:49:35,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:35,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:35,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:35,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:49:35,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:35,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:49:35,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:35,258 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:35,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:49:35,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:49:35,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:49:35,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:49:35,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-14 17:49:35,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:35,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:35,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:35,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:49:35,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:35,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:49:35,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:35,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:35,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:49:35,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:49:35,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:49:35,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:35,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-14 17:49:35,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:35,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:35,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:35,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:49:35,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:35,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:49:35,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:35,265 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:35,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:49:35,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:49:35,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:49:35,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:35,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-14 17:49:35,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:35,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:35,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:35,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:49:35,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:35,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:49:35,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:35,268 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:35,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:49:35,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:49:35,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:49:35,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:35,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-14 17:49:35,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:35,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:35,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:35,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:49:35,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:35,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:49:35,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:35,272 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:35,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:49:35,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:49:35,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:49:35,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:35,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-14 17:49:35,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:35,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:35,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:35,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:49:35,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:35,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:49:35,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:35,275 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:35,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:49:35,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:49:35,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:49:35,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:35,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-14 17:49:35,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:35,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:35,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:35,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:49:35,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:35,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:49:35,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:35,278 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:35,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:49:35,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:49:35,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:49:35,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:35,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-14 17:49:35,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:35,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:35,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:35,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:49:35,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:35,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:49:35,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:35,282 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:35,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:49:35,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:49:35,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:49:35,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:35,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-14 17:49:35,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:35,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:35,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:35,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:49:35,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:35,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:49:35,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:35,284 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:35,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:49:35,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:49:35,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:49:35,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:35,290 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 18 proven. 117 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2020-10-14 17:49:35,290 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1435053494] [2020-10-14 17:49:35,290 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:49:35,291 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 17:49:35,291 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54944683] [2020-10-14 17:49:35,291 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 17:49:35,291 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:49:35,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 17:49:35,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-14 17:49:35,291 INFO L87 Difference]: Start difference. First operand 221 states and 252 transitions. Second operand 13 states. [2020-10-14 17:49:35,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:49:35,452 INFO L93 Difference]: Finished difference Result 390 states and 438 transitions. [2020-10-14 17:49:35,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 17:49:35,454 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 114 [2020-10-14 17:49:35,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:49:35,456 INFO L225 Difference]: With dead ends: 390 [2020-10-14 17:49:35,456 INFO L226 Difference]: Without dead ends: 231 [2020-10-14 17:49:35,456 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-14 17:49:35,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2020-10-14 17:49:35,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 227. [2020-10-14 17:49:35,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2020-10-14 17:49:35,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 260 transitions. [2020-10-14 17:49:35,487 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 260 transitions. Word has length 114 [2020-10-14 17:49:35,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:49:35,487 INFO L479 AbstractCegarLoop]: Abstraction has 227 states and 260 transitions. [2020-10-14 17:49:35,487 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 17:49:35,487 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 260 transitions. [2020-10-14 17:49:35,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-14 17:49:35,488 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:49:35,488 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:49:35,489 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-14 17:49:35,489 INFO L427 AbstractCegarLoop]: === Iteration 41 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:49:35,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:49:35,489 INFO L82 PathProgramCache]: Analyzing trace with hash 1125537323, now seen corresponding path program 26 times [2020-10-14 17:49:35,489 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:49:35,489 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [692509828] [2020-10-14 17:49:35,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:49:35,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:35,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:35,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:35,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:36,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:36,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-14 17:49:36,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 17:49:36,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1092 [2020-10-14 17:49:36,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:36,589 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:36,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-14 17:49:36,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 17:49:36,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-10-14 17:49:36,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:36,812 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 26 [2020-10-14 17:49:37,008 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 31 [2020-10-14 17:49:37,139 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 30 [2020-10-14 17:49:37,419 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 32 [2020-10-14 17:49:37,771 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 34 [2020-10-14 17:49:37,931 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 32 [2020-10-14 17:49:38,315 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 46 [2020-10-14 17:49:38,483 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 40 [2020-10-14 17:49:39,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:49:39,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:39,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:39,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:39,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:49:39,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:39,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:49:39,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:39,367 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:39,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:49:39,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:49:39,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:49:39,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:39,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-14 17:49:39,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:39,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:39,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:39,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:49:39,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:39,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:49:39,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:39,371 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:39,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:49:39,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:49:39,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:49:39,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:39,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-14 17:49:39,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:39,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:39,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:39,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:49:39,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:39,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:49:39,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:39,375 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:39,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:49:39,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:49:39,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:49:39,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:39,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-14 17:49:39,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:39,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:39,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:39,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:49:39,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:39,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:49:39,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:39,381 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:39,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:49:39,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:49:39,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:49:39,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:39,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-14 17:49:39,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:39,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:39,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:39,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:49:39,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:39,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:49:39,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:39,385 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:39,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:49:39,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:49:39,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:49:39,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:49:39,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-14 17:49:39,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:39,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:39,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:39,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:49:39,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:39,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:49:39,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:39,389 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:39,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:49:39,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:49:39,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:49:39,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:39,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-14 17:49:39,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:39,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:39,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:39,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:49:39,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:39,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:49:39,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:39,393 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:39,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:49:39,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:49:39,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:49:39,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:39,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-14 17:49:39,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:39,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:39,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:39,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:49:39,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:39,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:49:39,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:39,397 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:39,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:49:39,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:49:39,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:49:39,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:39,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-14 17:49:39,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:39,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:39,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:39,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:49:39,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:39,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:49:39,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:39,403 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:39,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:49:39,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:49:39,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:49:39,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:39,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-14 17:49:39,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:39,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:39,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:39,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:49:39,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:39,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:49:39,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:39,409 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:39,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:49:39,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:49:39,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:49:39,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:39,465 INFO L134 CoverageAnalysis]: Checked inductivity of 469 backedges. 18 proven. 307 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2020-10-14 17:49:39,465 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [692509828] [2020-10-14 17:49:39,465 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:49:39,465 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-14 17:49:39,466 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658270268] [2020-10-14 17:49:39,466 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-14 17:49:39,466 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:49:39,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-14 17:49:39,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=754, Unknown=0, NotChecked=0, Total=812 [2020-10-14 17:49:39,467 INFO L87 Difference]: Start difference. First operand 227 states and 260 transitions. Second operand 29 states. [2020-10-14 17:49:43,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:49:43,333 INFO L93 Difference]: Finished difference Result 340 states and 410 transitions. [2020-10-14 17:49:43,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-10-14 17:49:43,334 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 117 [2020-10-14 17:49:43,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:49:43,336 INFO L225 Difference]: With dead ends: 340 [2020-10-14 17:49:43,336 INFO L226 Difference]: Without dead ends: 338 [2020-10-14 17:49:43,337 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 386 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=166, Invalid=2696, Unknown=0, NotChecked=0, Total=2862 [2020-10-14 17:49:43,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2020-10-14 17:49:43,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 274. [2020-10-14 17:49:43,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 274 states. [2020-10-14 17:49:43,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 328 transitions. [2020-10-14 17:49:43,377 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 328 transitions. Word has length 117 [2020-10-14 17:49:43,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:49:43,378 INFO L479 AbstractCegarLoop]: Abstraction has 274 states and 328 transitions. [2020-10-14 17:49:43,378 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-14 17:49:43,378 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 328 transitions. [2020-10-14 17:49:43,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-14 17:49:43,379 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:49:43,380 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:49:43,380 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-14 17:49:43,380 INFO L427 AbstractCegarLoop]: === Iteration 42 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:49:43,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:49:43,380 INFO L82 PathProgramCache]: Analyzing trace with hash -527406063, now seen corresponding path program 10 times [2020-10-14 17:49:43,380 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:49:43,381 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [581222454] [2020-10-14 17:49:43,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:49:43,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:43,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:43,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:43,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:44,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:44,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-14 17:49:44,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 17:49:44,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1243 [2020-10-14 17:49:44,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:44,631 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:44,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-14 17:49:44,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 17:49:44,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-14 17:49:44,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:46,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:49:46,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:46,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:46,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:46,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:49:46,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:46,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:49:46,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:46,222 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:46,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:49:46,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:49:46,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:49:46,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:46,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-14 17:49:46,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:46,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:46,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:46,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:49:46,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:46,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:49:46,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:46,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:46,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:49:46,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:49:46,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:49:46,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:46,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-14 17:49:46,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:46,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:46,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:46,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:49:46,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:46,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:49:46,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:46,231 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:46,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:49:46,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:49:46,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:49:46,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:46,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-14 17:49:46,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:46,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:46,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:46,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:49:46,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:46,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:49:46,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:46,236 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:46,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:49:46,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:49:46,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:49:46,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:46,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-14 17:49:46,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:46,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:46,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:46,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:49:46,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:46,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:49:46,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:46,242 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:46,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:49:46,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:49:46,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:49:46,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:49:46,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-14 17:49:46,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:46,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:46,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:46,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:49:46,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:46,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:49:46,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:46,249 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:46,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:49:46,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:49:46,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:49:46,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:46,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-14 17:49:46,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:46,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:46,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:46,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:49:46,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:46,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:49:46,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:46,255 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:46,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:49:46,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:49:46,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:49:46,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:46,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-14 17:49:46,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:46,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:46,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:46,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:49:46,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:46,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:49:46,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:46,259 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:46,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:49:46,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:49:46,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:49:46,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:46,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-14 17:49:46,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:46,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:46,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:46,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:49:46,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:46,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:49:46,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:46,265 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:46,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:49:46,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:49:46,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:49:46,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:46,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-14 17:49:46,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:46,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:46,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:46,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:49:46,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:46,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:49:46,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:46,270 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:46,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:49:46,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:49:46,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:49:46,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:46,308 INFO L134 CoverageAnalysis]: Checked inductivity of 469 backedges. 18 proven. 307 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2020-10-14 17:49:46,309 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [581222454] [2020-10-14 17:49:46,309 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:49:46,309 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-14 17:49:46,309 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342310788] [2020-10-14 17:49:46,309 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-14 17:49:46,310 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:49:46,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-14 17:49:46,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=650, Unknown=0, NotChecked=0, Total=702 [2020-10-14 17:49:46,310 INFO L87 Difference]: Start difference. First operand 274 states and 328 transitions. Second operand 27 states. [2020-10-14 17:49:49,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:49:49,465 INFO L93 Difference]: Finished difference Result 303 states and 360 transitions. [2020-10-14 17:49:49,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-14 17:49:49,466 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 118 [2020-10-14 17:49:49,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:49:49,468 INFO L225 Difference]: With dead ends: 303 [2020-10-14 17:49:49,468 INFO L226 Difference]: Without dead ends: 301 [2020-10-14 17:49:49,469 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=109, Invalid=1451, Unknown=0, NotChecked=0, Total=1560 [2020-10-14 17:49:49,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2020-10-14 17:49:49,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 282. [2020-10-14 17:49:49,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 282 states. [2020-10-14 17:49:49,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 336 transitions. [2020-10-14 17:49:49,515 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 336 transitions. Word has length 118 [2020-10-14 17:49:49,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:49:49,516 INFO L479 AbstractCegarLoop]: Abstraction has 282 states and 336 transitions. [2020-10-14 17:49:49,516 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-14 17:49:49,516 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 336 transitions. [2020-10-14 17:49:49,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-14 17:49:49,517 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:49:49,517 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:49:49,518 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-14 17:49:49,518 INFO L427 AbstractCegarLoop]: === Iteration 43 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:49:49,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:49:49,518 INFO L82 PathProgramCache]: Analyzing trace with hash 2144400969, now seen corresponding path program 27 times [2020-10-14 17:49:49,518 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:49:49,518 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1271074937] [2020-10-14 17:49:49,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:49:49,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:49,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:49,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:49,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:50,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:50,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-14 17:49:50,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 17:49:50,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1146 [2020-10-14 17:49:50,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:50,673 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:50,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-14 17:49:50,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 17:49:50,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-10-14 17:49:50,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:50,895 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 26 [2020-10-14 17:49:51,027 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 31 [2020-10-14 17:49:51,160 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 32 [2020-10-14 17:49:51,284 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 32 [2020-10-14 17:49:51,421 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 32 [2020-10-14 17:49:51,558 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 32 [2020-10-14 17:49:51,698 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 32 [2020-10-14 17:49:51,841 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 32 [2020-10-14 17:49:51,992 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 32 [2020-10-14 17:49:52,157 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 32 [2020-10-14 17:49:52,343 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 44 [2020-10-14 17:49:52,516 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 40 [2020-10-14 17:49:52,687 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 30 [2020-10-14 17:49:53,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:49:53,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:53,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:53,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:53,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:49:53,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:53,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:49:53,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:53,876 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:53,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:49:53,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:49:53,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:49:53,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:53,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-14 17:49:53,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:53,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:53,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:53,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:49:53,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:53,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:49:53,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:53,881 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:53,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:49:53,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:49:53,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:49:53,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:53,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-14 17:49:53,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:53,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:53,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:53,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:49:53,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:53,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:49:53,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:53,887 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:53,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:49:53,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:49:53,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:49:53,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:53,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-14 17:49:53,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:53,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:53,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:53,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:49:53,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:53,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:49:53,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:53,894 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:53,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:49:53,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:49:53,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:49:53,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:53,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-14 17:49:53,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:53,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:53,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:53,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:49:53,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:53,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:49:53,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:53,900 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:53,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:49:53,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:49:53,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:49:53,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:53,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-14 17:49:53,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:53,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:53,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:53,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:49:53,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:53,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:49:53,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:53,907 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:53,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:49:53,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:49:53,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:49:53,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:53,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-14 17:49:53,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:53,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:53,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:53,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:49:53,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:53,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:49:53,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:53,914 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:53,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:49:53,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:49:53,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:49:53,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:53,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-14 17:49:53,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:53,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:53,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:53,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:49:53,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:53,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:49:53,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:53,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:53,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:49:53,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:49:53,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:49:53,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:53,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-14 17:49:53,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:53,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:53,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:53,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:49:53,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:53,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:49:53,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:53,928 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:53,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:49:53,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:49:53,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:49:53,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:53,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-14 17:49:53,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:53,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:53,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:53,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:49:53,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:53,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:49:53,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:53,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:53,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:49:53,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:49:53,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:49:53,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:54,014 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 18 proven. 338 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2020-10-14 17:49:54,014 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1271074937] [2020-10-14 17:49:54,014 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:49:54,015 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-14 17:49:54,015 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644104942] [2020-10-14 17:49:54,015 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-14 17:49:54,015 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:49:54,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-14 17:49:54,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=807, Unknown=0, NotChecked=0, Total=870 [2020-10-14 17:49:54,016 INFO L87 Difference]: Start difference. First operand 282 states and 336 transitions. Second operand 30 states. [2020-10-14 17:49:54,623 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 39 [2020-10-14 17:49:54,840 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 39 [2020-10-14 17:49:55,276 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 39 [2020-10-14 17:49:55,494 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 39 [2020-10-14 17:49:55,706 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 39 [2020-10-14 17:49:56,136 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 38 [2020-10-14 17:49:56,322 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 46 [2020-10-14 17:49:59,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:49:59,570 INFO L93 Difference]: Finished difference Result 402 states and 484 transitions. [2020-10-14 17:49:59,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-10-14 17:49:59,572 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 120 [2020-10-14 17:49:59,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:49:59,573 INFO L225 Difference]: With dead ends: 402 [2020-10-14 17:49:59,574 INFO L226 Difference]: Without dead ends: 400 [2020-10-14 17:49:59,575 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 418 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=182, Invalid=2788, Unknown=0, NotChecked=0, Total=2970 [2020-10-14 17:49:59,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2020-10-14 17:49:59,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 243. [2020-10-14 17:49:59,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2020-10-14 17:49:59,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 277 transitions. [2020-10-14 17:49:59,613 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 277 transitions. Word has length 120 [2020-10-14 17:49:59,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:49:59,613 INFO L479 AbstractCegarLoop]: Abstraction has 243 states and 277 transitions. [2020-10-14 17:49:59,613 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-14 17:49:59,613 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 277 transitions. [2020-10-14 17:49:59,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-14 17:49:59,615 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:49:59,615 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:49:59,615 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-14 17:49:59,615 INFO L427 AbstractCegarLoop]: === Iteration 44 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:49:59,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:49:59,615 INFO L82 PathProgramCache]: Analyzing trace with hash -906714833, now seen corresponding path program 28 times [2020-10-14 17:49:59,616 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:49:59,616 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1985401311] [2020-10-14 17:49:59,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:49:59,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:59,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:59,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:00,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:00,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-14 17:50:00,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:50:00,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 573 [2020-10-14 17:50:00,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:00,197 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:00,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 17:50:00,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 17:50:00,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 17:50:00,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:00,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:50:00,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:00,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:00,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:00,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:50:00,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:00,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:50:00,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:00,329 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:00,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:50:00,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:50:00,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:50:00,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:00,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-14 17:50:00,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:00,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:00,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:00,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:50:00,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:00,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:50:00,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:00,332 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:00,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:50:00,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:50:00,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:50:00,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:00,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-14 17:50:00,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:00,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:00,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:00,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:50:00,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:00,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:50:00,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:00,335 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:00,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:50:00,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:50:00,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:50:00,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:00,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-14 17:50:00,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:00,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:00,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:00,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:50:00,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:00,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:50:00,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:00,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:00,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:50:00,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:50:00,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:50:00,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:00,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-14 17:50:00,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:00,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:00,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:00,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:50:00,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:00,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:50:00,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:00,341 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:00,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:50:00,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:50:00,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:50:00,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:00,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-14 17:50:00,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:00,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:00,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:00,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:50:00,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:00,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:50:00,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:00,344 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:00,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:50:00,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:50:00,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:50:00,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:00,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-14 17:50:00,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:00,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:00,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:00,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:50:00,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:00,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:50:00,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:00,347 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:00,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:50:00,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:50:00,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:50:00,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:00,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-14 17:50:00,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:00,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:00,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:00,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:50:00,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:00,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:50:00,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:00,349 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:00,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:50:00,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:50:00,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:50:00,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:00,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-14 17:50:00,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:00,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:00,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:00,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:50:00,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:00,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:50:00,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:00,352 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:00,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:50:00,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:50:00,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:50:00,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:00,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-14 17:50:00,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:00,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:00,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:00,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:50:00,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:00,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:50:00,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:00,356 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:00,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:50:00,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:50:00,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:50:00,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:00,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-14 17:50:00,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:00,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:00,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:00,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:50:00,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:00,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:50:00,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:00,359 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:00,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:50:00,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:50:00,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:50:00,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:00,365 INFO L134 CoverageAnalysis]: Checked inductivity of 545 backedges. 20 proven. 145 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2020-10-14 17:50:00,366 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1985401311] [2020-10-14 17:50:00,366 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:50:00,366 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 17:50:00,366 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741399572] [2020-10-14 17:50:00,366 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 17:50:00,367 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:50:00,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 17:50:00,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-14 17:50:00,367 INFO L87 Difference]: Start difference. First operand 243 states and 277 transitions. Second operand 14 states. [2020-10-14 17:50:00,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:50:00,527 INFO L93 Difference]: Finished difference Result 428 states and 480 transitions. [2020-10-14 17:50:00,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 17:50:00,528 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 125 [2020-10-14 17:50:00,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:50:00,530 INFO L225 Difference]: With dead ends: 428 [2020-10-14 17:50:00,530 INFO L226 Difference]: Without dead ends: 253 [2020-10-14 17:50:00,531 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-14 17:50:00,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2020-10-14 17:50:00,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 249. [2020-10-14 17:50:00,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2020-10-14 17:50:00,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 285 transitions. [2020-10-14 17:50:00,567 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 285 transitions. Word has length 125 [2020-10-14 17:50:00,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:50:00,568 INFO L479 AbstractCegarLoop]: Abstraction has 249 states and 285 transitions. [2020-10-14 17:50:00,568 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 17:50:00,568 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 285 transitions. [2020-10-14 17:50:00,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-14 17:50:00,569 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:50:00,569 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:50:00,569 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-14 17:50:00,570 INFO L427 AbstractCegarLoop]: === Iteration 45 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:50:00,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:50:00,570 INFO L82 PathProgramCache]: Analyzing trace with hash -770423987, now seen corresponding path program 29 times [2020-10-14 17:50:00,570 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:50:00,570 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2115850202] [2020-10-14 17:50:00,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:50:00,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:00,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:00,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:01,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:02,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:02,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-14 17:50:02,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 17:50:02,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1924 [2020-10-14 17:50:02,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:02,503 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:02,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-14 17:50:02,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 17:50:02,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-14 17:50:02,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:03,836 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 43 [2020-10-14 17:50:04,006 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 40 [2020-10-14 17:50:05,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:50:05,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:05,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:05,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:05,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:50:05,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:05,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:50:05,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:05,043 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:05,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:50:05,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:50:05,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:50:05,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:05,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-14 17:50:05,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:05,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:05,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:05,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:50:05,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:05,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:50:05,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:05,048 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:05,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:50:05,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:50:05,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:50:05,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:05,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-14 17:50:05,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:05,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:05,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:05,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:50:05,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:05,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:50:05,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:05,052 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:05,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:50:05,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:50:05,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:50:05,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:05,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-14 17:50:05,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:05,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:05,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:05,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:50:05,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:05,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:50:05,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:05,056 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:05,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:50:05,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:50:05,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:50:05,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:05,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-14 17:50:05,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:05,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:05,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:05,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:50:05,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:05,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:50:05,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:05,059 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:05,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:50:05,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:50:05,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:50:05,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:05,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-14 17:50:05,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:05,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:05,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:05,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:50:05,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:05,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:50:05,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:05,064 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:05,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:50:05,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:50:05,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:50:05,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:05,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-14 17:50:05,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:05,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:05,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:05,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:50:05,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:05,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:50:05,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:05,068 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:05,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:50:05,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:50:05,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:50:05,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:05,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-14 17:50:05,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:05,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:05,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:05,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:50:05,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:05,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:50:05,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:05,072 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:05,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:50:05,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:50:05,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:50:05,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:05,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-14 17:50:05,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:05,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:05,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:05,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:50:05,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:05,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:50:05,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:05,076 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:05,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:50:05,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:50:05,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:50:05,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:05,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-14 17:50:05,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:05,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:05,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:05,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:50:05,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:05,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:50:05,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:05,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:05,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:50:05,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:50:05,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:50:05,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:05,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-10-14 17:50:05,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:05,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:05,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:05,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:50:05,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:05,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:50:05,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:05,085 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:05,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:50:05,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:50:05,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:50:05,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:05,147 INFO L134 CoverageAnalysis]: Checked inductivity of 576 backedges. 20 proven. 376 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2020-10-14 17:50:05,147 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2115850202] [2020-10-14 17:50:05,147 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:50:05,147 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-14 17:50:05,147 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440307826] [2020-10-14 17:50:05,148 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-14 17:50:05,148 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:50:05,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-14 17:50:05,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=867, Unknown=0, NotChecked=0, Total=930 [2020-10-14 17:50:05,148 INFO L87 Difference]: Start difference. First operand 249 states and 285 transitions. Second operand 31 states. [2020-10-14 17:50:09,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:50:09,667 INFO L93 Difference]: Finished difference Result 371 states and 447 transitions. [2020-10-14 17:50:09,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-10-14 17:50:09,668 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 128 [2020-10-14 17:50:09,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:50:09,670 INFO L225 Difference]: With dead ends: 371 [2020-10-14 17:50:09,670 INFO L226 Difference]: Without dead ends: 369 [2020-10-14 17:50:09,672 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 433 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=175, Invalid=3017, Unknown=0, NotChecked=0, Total=3192 [2020-10-14 17:50:09,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2020-10-14 17:50:09,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 300. [2020-10-14 17:50:09,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 300 states. [2020-10-14 17:50:09,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 359 transitions. [2020-10-14 17:50:09,725 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 359 transitions. Word has length 128 [2020-10-14 17:50:09,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:50:09,726 INFO L479 AbstractCegarLoop]: Abstraction has 300 states and 359 transitions. [2020-10-14 17:50:09,726 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-14 17:50:09,726 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 359 transitions. [2020-10-14 17:50:09,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-10-14 17:50:09,727 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:50:09,728 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:50:09,728 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-14 17:50:09,728 INFO L427 AbstractCegarLoop]: === Iteration 46 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:50:09,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:50:09,728 INFO L82 PathProgramCache]: Analyzing trace with hash -585856156, now seen corresponding path program 11 times [2020-10-14 17:50:09,728 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:50:09,729 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1436808916] [2020-10-14 17:50:09,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:50:09,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:09,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:09,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:10,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:11,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:11,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-10-14 17:50:11,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 17:50:11,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1843 [2020-10-14 17:50:11,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:11,579 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:11,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-14 17:50:11,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 17:50:11,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 145 [2020-10-14 17:50:11,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:13,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:50:13,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:13,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:13,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:13,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:50:13,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:13,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:50:13,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:13,048 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:13,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:50:13,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:50:13,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:50:13,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:13,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-14 17:50:13,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:13,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:13,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:13,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:50:13,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:13,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:50:13,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:13,053 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:13,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:50:13,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:50:13,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:50:13,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:13,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-14 17:50:13,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:13,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:13,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:13,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:50:13,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:13,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:50:13,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:13,057 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:13,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:50:13,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:50:13,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:50:13,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:13,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-14 17:50:13,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:13,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:13,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:13,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:50:13,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:13,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:50:13,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:13,062 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:13,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:50:13,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:50:13,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:50:13,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:13,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-14 17:50:13,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:13,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:13,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:13,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:50:13,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:13,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:50:13,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:13,067 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:13,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:50:13,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:50:13,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:50:13,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:13,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-14 17:50:13,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:13,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:13,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:13,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:50:13,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:13,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:50:13,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:13,073 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:13,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:50:13,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:50:13,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:50:13,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:13,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-14 17:50:13,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:13,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:13,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:13,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:50:13,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:13,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:50:13,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:13,079 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:13,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:50:13,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:50:13,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:50:13,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:13,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-14 17:50:13,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:13,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:13,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:13,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:50:13,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:13,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:50:13,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:13,086 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:13,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:50:13,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:50:13,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:50:13,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:13,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-14 17:50:13,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:13,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:13,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:13,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:50:13,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:13,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:50:13,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:13,092 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:13,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:50:13,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:50:13,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:50:13,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:13,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-14 17:50:13,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:13,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:13,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:13,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:50:13,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:13,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:50:13,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:13,098 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:13,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:50:13,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:50:13,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:50:13,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:13,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-14 17:50:13,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:13,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:13,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:13,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:50:13,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:13,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:50:13,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:13,105 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:13,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:50:13,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:50:13,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:50:13,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:50:13,179 INFO L134 CoverageAnalysis]: Checked inductivity of 576 backedges. 20 proven. 376 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2020-10-14 17:50:13,179 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1436808916] [2020-10-14 17:50:13,179 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:50:13,179 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-14 17:50:13,179 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429790057] [2020-10-14 17:50:13,180 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-14 17:50:13,180 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:50:13,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-14 17:50:13,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=756, Unknown=0, NotChecked=0, Total=812 [2020-10-14 17:50:13,181 INFO L87 Difference]: Start difference. First operand 300 states and 359 transitions. Second operand 29 states. [2020-10-14 17:50:16,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:50:16,740 INFO L93 Difference]: Finished difference Result 330 states and 392 transitions. [2020-10-14 17:50:16,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-14 17:50:16,741 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 129 [2020-10-14 17:50:16,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:50:16,743 INFO L225 Difference]: With dead ends: 330 [2020-10-14 17:50:16,743 INFO L226 Difference]: Without dead ends: 328 [2020-10-14 17:50:16,744 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=117, Invalid=1689, Unknown=0, NotChecked=0, Total=1806 [2020-10-14 17:50:16,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2020-10-14 17:50:16,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 308. [2020-10-14 17:50:16,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 308 states. [2020-10-14 17:50:16,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 367 transitions. [2020-10-14 17:50:16,791 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 367 transitions. Word has length 129 [2020-10-14 17:50:16,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:50:16,792 INFO L479 AbstractCegarLoop]: Abstraction has 308 states and 367 transitions. [2020-10-14 17:50:16,792 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-14 17:50:16,792 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 367 transitions. [2020-10-14 17:50:16,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-10-14 17:50:16,793 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:50:16,793 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:50:16,794 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-10-14 17:50:16,794 INFO L427 AbstractCegarLoop]: === Iteration 47 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:50:16,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:50:16,794 INFO L82 PathProgramCache]: Analyzing trace with hash 726074479, now seen corresponding path program 30 times [2020-10-14 17:50:16,794 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:50:16,795 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1197724627] [2020-10-14 17:50:16,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:50:16,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:16,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:16,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:17,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:18,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:18,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-10-14 17:50:18,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 17:50:18,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1790 [2020-10-14 17:50:18,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:18,592 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:18,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-14 17:50:18,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 17:50:18,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 147 [2020-10-14 17:50:18,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:20,010 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 43 [2020-10-14 17:50:20,184 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 40 [2020-10-14 17:50:21,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:50:21,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:21,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:21,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:21,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:50:21,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:21,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:50:21,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:21,401 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:21,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:50:21,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:50:21,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:50:21,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:50:21,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-14 17:50:21,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:21,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:21,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:21,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:50:21,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:21,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:50:21,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:21,406 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:21,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:50:21,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:50:21,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:50:21,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:21,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-14 17:50:21,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:21,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:21,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:21,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:50:21,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:21,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:50:21,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:21,410 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:21,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:50:21,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:50:21,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:50:21,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:21,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-14 17:50:21,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:21,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:21,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:21,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:50:21,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:21,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:50:21,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:21,414 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:21,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:50:21,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:50:21,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:50:21,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:21,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-14 17:50:21,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:21,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:21,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:21,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:50:21,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:21,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:50:21,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:21,418 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:21,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:50:21,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:50:21,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:50:21,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:21,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-14 17:50:21,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:21,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:21,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:21,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:50:21,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:21,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:50:21,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:21,422 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:21,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:50:21,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:50:21,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:50:21,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:21,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-14 17:50:21,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:21,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:21,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:21,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:50:21,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:21,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:50:21,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:21,427 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:21,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:50:21,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:50:21,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:50:21,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:21,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 17:50:21,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:21,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:21,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:21,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:50:21,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:21,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:50:21,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:21,433 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:21,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:50:21,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:50:21,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:50:21,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:21,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-14 17:50:21,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:21,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:21,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:21,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:50:21,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:21,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:50:21,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:21,439 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:21,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:50:21,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:50:21,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:50:21,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:21,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-14 17:50:21,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:21,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:21,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:21,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:50:21,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:21,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:50:21,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:21,443 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:21,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:50:21,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:50:21,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:50:21,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:21,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-14 17:50:21,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:21,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:21,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:21,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:50:21,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:21,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:50:21,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:21,447 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:21,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:50:21,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:50:21,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:50:21,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:21,513 INFO L134 CoverageAnalysis]: Checked inductivity of 610 backedges. 20 proven. 410 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2020-10-14 17:50:21,513 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1197724627] [2020-10-14 17:50:21,513 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:50:21,513 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-14 17:50:21,513 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379719699] [2020-10-14 17:50:21,514 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-14 17:50:21,514 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:50:21,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-14 17:50:21,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=925, Unknown=0, NotChecked=0, Total=992 [2020-10-14 17:50:21,515 INFO L87 Difference]: Start difference. First operand 308 states and 367 transitions. Second operand 32 states. [2020-10-14 17:50:22,624 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 39 [2020-10-14 17:50:24,117 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 45 [2020-10-14 17:50:27,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:50:27,739 INFO L93 Difference]: Finished difference Result 390 states and 467 transitions. [2020-10-14 17:50:27,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-10-14 17:50:27,740 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 131 [2020-10-14 17:50:27,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:50:27,742 INFO L225 Difference]: With dead ends: 390 [2020-10-14 17:50:27,742 INFO L226 Difference]: Without dead ends: 388 [2020-10-14 17:50:27,743 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 478 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=195, Invalid=3227, Unknown=0, NotChecked=0, Total=3422 [2020-10-14 17:50:27,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2020-10-14 17:50:27,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 265. [2020-10-14 17:50:27,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 265 states. [2020-10-14 17:50:27,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 302 transitions. [2020-10-14 17:50:27,779 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 302 transitions. Word has length 131 [2020-10-14 17:50:27,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:50:27,780 INFO L479 AbstractCegarLoop]: Abstraction has 265 states and 302 transitions. [2020-10-14 17:50:27,780 INFO L480 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-14 17:50:27,780 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 302 transitions. [2020-10-14 17:50:27,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-10-14 17:50:27,781 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:50:27,781 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:50:27,781 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-10-14 17:50:27,781 INFO L427 AbstractCegarLoop]: === Iteration 48 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:50:27,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:50:27,781 INFO L82 PathProgramCache]: Analyzing trace with hash 399264849, now seen corresponding path program 31 times [2020-10-14 17:50:27,782 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:50:27,782 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1412670373] [2020-10-14 17:50:27,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:50:27,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:27,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:27,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:28,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:28,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-14 17:50:28,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:50:28,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 659 [2020-10-14 17:50:28,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:28,447 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:28,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 17:50:28,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 17:50:28,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-14 17:50:28,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:28,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:50:28,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:28,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:28,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:28,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:50:28,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:28,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:50:28,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:28,603 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:28,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:50:28,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:50:28,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:50:28,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:28,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-14 17:50:28,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:28,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:28,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:28,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:50:28,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:28,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:50:28,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:28,606 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:28,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:50:28,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:50:28,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:50:28,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:28,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-14 17:50:28,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:28,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:28,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:28,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:50:28,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:28,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:50:28,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:28,609 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:28,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:50:28,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:50:28,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:50:28,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:28,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-14 17:50:28,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:28,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:28,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:28,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:50:28,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:28,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:50:28,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:28,612 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:28,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:50:28,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:50:28,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:50:28,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:28,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-14 17:50:28,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:28,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:28,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:28,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:50:28,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:28,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:50:28,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:28,615 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:28,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:50:28,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:50:28,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:50:28,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:28,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-14 17:50:28,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:28,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:28,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:28,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:50:28,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:28,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:50:28,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:28,618 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:28,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:50:28,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:50:28,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:50:28,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:28,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-14 17:50:28,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:28,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:28,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:28,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:50:28,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:28,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:50:28,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:28,622 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:28,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:50:28,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:50:28,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:50:28,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:28,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-14 17:50:28,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:28,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:28,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:28,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:50:28,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:28,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:50:28,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:28,626 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:28,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:50:28,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:50:28,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:50:28,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:28,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-14 17:50:28,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:28,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:28,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:28,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:50:28,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:28,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:50:28,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:28,630 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:28,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:50:28,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:50:28,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:50:28,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:28,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-14 17:50:28,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:28,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:28,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:28,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:50:28,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:28,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:50:28,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:28,633 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:28,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:50:28,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:50:28,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:50:28,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:28,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-10-14 17:50:28,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:28,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:28,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:28,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:50:28,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:28,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:50:28,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:28,636 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:28,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:50:28,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:50:28,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:50:28,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:28,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-14 17:50:28,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:28,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:28,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:28,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:50:28,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:28,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:50:28,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:28,639 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:28,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:50:28,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:50:28,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:50:28,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:28,647 INFO L134 CoverageAnalysis]: Checked inductivity of 660 backedges. 22 proven. 176 refuted. 0 times theorem prover too weak. 462 trivial. 0 not checked. [2020-10-14 17:50:28,647 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1412670373] [2020-10-14 17:50:28,647 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:50:28,647 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 17:50:28,647 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784378656] [2020-10-14 17:50:28,648 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 17:50:28,648 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:50:28,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 17:50:28,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-14 17:50:28,648 INFO L87 Difference]: Start difference. First operand 265 states and 302 transitions. Second operand 15 states. [2020-10-14 17:50:28,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:50:28,844 INFO L93 Difference]: Finished difference Result 466 states and 522 transitions. [2020-10-14 17:50:28,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 17:50:28,845 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 136 [2020-10-14 17:50:28,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:50:28,847 INFO L225 Difference]: With dead ends: 466 [2020-10-14 17:50:28,847 INFO L226 Difference]: Without dead ends: 275 [2020-10-14 17:50:28,848 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-14 17:50:28,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2020-10-14 17:50:28,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 271. [2020-10-14 17:50:28,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2020-10-14 17:50:28,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 310 transitions. [2020-10-14 17:50:28,878 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 310 transitions. Word has length 136 [2020-10-14 17:50:28,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:50:28,878 INFO L479 AbstractCegarLoop]: Abstraction has 271 states and 310 transitions. [2020-10-14 17:50:28,879 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 17:50:28,879 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 310 transitions. [2020-10-14 17:50:28,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-10-14 17:50:28,880 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:50:28,880 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:50:28,880 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-10-14 17:50:28,880 INFO L427 AbstractCegarLoop]: === Iteration 49 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:50:28,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:50:28,880 INFO L82 PathProgramCache]: Analyzing trace with hash 1740950387, now seen corresponding path program 32 times [2020-10-14 17:50:28,880 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:50:28,881 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1460565731] [2020-10-14 17:50:28,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:50:28,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:28,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:28,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:29,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:30,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:30,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-14 17:50:30,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 17:50:30,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1770 [2020-10-14 17:50:30,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:30,656 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:30,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-14 17:50:30,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 17:50:30,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-10-14 17:50:30,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:30,963 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 35 [2020-10-14 17:50:31,110 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 32 [2020-10-14 17:50:31,282 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 31 [2020-10-14 17:50:31,449 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 31 [2020-10-14 17:50:31,974 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 36 [2020-10-14 17:50:32,136 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 36 [2020-10-14 17:50:32,479 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 31 [2020-10-14 17:50:32,702 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 50 [2020-10-14 17:50:32,966 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 41 [2020-10-14 17:50:34,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:50:34,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:34,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:34,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:34,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:50:34,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:34,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:50:34,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:34,155 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:34,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:50:34,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:50:34,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:50:34,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:34,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-14 17:50:34,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:34,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:34,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:34,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:50:34,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:34,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:50:34,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:34,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:34,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:50:34,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:50:34,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:50:34,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:34,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-14 17:50:34,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:34,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:34,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:34,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:50:34,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:34,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:50:34,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:34,163 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:34,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:50:34,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:50:34,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:50:34,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:34,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-14 17:50:34,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:34,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:34,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:34,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:50:34,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:34,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:50:34,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:34,168 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:34,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:50:34,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:50:34,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:50:34,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:34,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-14 17:50:34,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:34,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:34,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:34,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:50:34,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:34,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:50:34,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:34,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:34,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:50:34,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:50:34,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:50:34,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:34,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-14 17:50:34,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:34,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:34,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:34,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:50:34,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:34,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:50:34,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:34,177 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:34,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:50:34,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:50:34,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:50:34,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:34,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-14 17:50:34,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:34,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:34,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:34,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:50:34,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:34,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:50:34,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:34,183 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:34,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:50:34,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:50:34,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:50:34,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:34,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 17:50:34,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:34,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:34,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:34,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:50:34,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:34,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:50:34,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:34,188 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:34,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:50:34,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:50:34,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:50:34,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:34,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-14 17:50:34,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:34,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:34,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:34,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:50:34,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:34,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:50:34,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:34,192 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:34,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:50:34,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:50:34,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:50:34,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:34,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-14 17:50:34,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:34,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:34,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:34,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:50:34,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:34,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:50:34,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:34,196 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:34,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:50:34,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:50:34,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:50:34,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:34,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-14 17:50:34,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:34,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:34,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:34,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:50:34,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:34,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:50:34,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:34,200 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:34,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:50:34,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:50:34,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:50:34,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:34,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-14 17:50:34,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:34,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:34,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:34,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:50:34,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:34,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:50:34,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:34,205 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:34,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:50:34,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:50:34,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:50:34,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:34,279 INFO L134 CoverageAnalysis]: Checked inductivity of 694 backedges. 22 proven. 452 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2020-10-14 17:50:34,280 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1460565731] [2020-10-14 17:50:34,280 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:50:34,280 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-10-14 17:50:34,280 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590252134] [2020-10-14 17:50:34,280 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-10-14 17:50:34,280 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:50:34,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-10-14 17:50:34,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=989, Unknown=0, NotChecked=0, Total=1056 [2020-10-14 17:50:34,281 INFO L87 Difference]: Start difference. First operand 271 states and 310 transitions. Second operand 33 states. [2020-10-14 17:50:34,755 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 41 [2020-10-14 17:50:36,331 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 42 [2020-10-14 17:50:36,571 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 42 [2020-10-14 17:50:37,258 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 49 [2020-10-14 17:50:40,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:50:40,702 INFO L93 Difference]: Finished difference Result 402 states and 484 transitions. [2020-10-14 17:50:40,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-10-14 17:50:40,703 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 139 [2020-10-14 17:50:40,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:50:40,705 INFO L225 Difference]: With dead ends: 402 [2020-10-14 17:50:40,705 INFO L226 Difference]: Without dead ends: 400 [2020-10-14 17:50:40,706 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 494 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=187, Invalid=3473, Unknown=0, NotChecked=0, Total=3660 [2020-10-14 17:50:40,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2020-10-14 17:50:40,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 326. [2020-10-14 17:50:40,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 326 states. [2020-10-14 17:50:40,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 390 transitions. [2020-10-14 17:50:40,746 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 390 transitions. Word has length 139 [2020-10-14 17:50:40,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:50:40,747 INFO L479 AbstractCegarLoop]: Abstraction has 326 states and 390 transitions. [2020-10-14 17:50:40,747 INFO L480 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-10-14 17:50:40,747 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 390 transitions. [2020-10-14 17:50:40,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-10-14 17:50:40,748 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:50:40,748 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:50:40,749 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-10-14 17:50:40,749 INFO L427 AbstractCegarLoop]: === Iteration 50 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:50:40,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:50:40,749 INFO L82 PathProgramCache]: Analyzing trace with hash 811361399, now seen corresponding path program 12 times [2020-10-14 17:50:40,749 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:50:40,749 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [189156525] [2020-10-14 17:50:40,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:50:40,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:40,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:40,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:41,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:42,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:42,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-10-14 17:50:42,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 17:50:42,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2160 [2020-10-14 17:50:42,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:42,918 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:42,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-14 17:50:42,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 17:50:42,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 158 [2020-10-14 17:50:42,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:45,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:50:45,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:45,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:45,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:45,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:50:45,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:45,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:50:45,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:45,122 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:45,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:50:45,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:50:45,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:50:45,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:45,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-14 17:50:45,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:45,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:45,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:45,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:50:45,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:45,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:50:45,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:45,127 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:45,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:50:45,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:50:45,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:50:45,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:45,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-14 17:50:45,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:45,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:45,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:45,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:50:45,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:45,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:50:45,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:45,131 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:45,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:50:45,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:50:45,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:50:45,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:45,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-14 17:50:45,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:45,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:45,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:45,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:50:45,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:45,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:50:45,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:45,135 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:45,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:50:45,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:50:45,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:50:45,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:45,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-14 17:50:45,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:45,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:45,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:45,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:50:45,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:45,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:50:45,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:45,140 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:45,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:50:45,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:50:45,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:50:45,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:45,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-14 17:50:45,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:45,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:45,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:45,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:50:45,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:45,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:50:45,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:45,144 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:45,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:50:45,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:50:45,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:50:45,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:45,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-14 17:50:45,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:45,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:45,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:45,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:50:45,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:45,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:50:45,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:45,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:45,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:50:45,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:50:45,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:50:45,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:45,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-14 17:50:45,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:45,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:45,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:45,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:50:45,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:45,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:50:45,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:45,153 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:45,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:50:45,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:50:45,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:50:45,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:45,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-14 17:50:45,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:45,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:45,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:45,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:50:45,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:45,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:50:45,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:45,157 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:45,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:50:45,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:50:45,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:50:45,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:45,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-10-14 17:50:45,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:45,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:45,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:45,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:50:45,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:45,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:50:45,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:45,162 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:45,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:50:45,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:50:45,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:50:45,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:45,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-10-14 17:50:45,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:45,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:45,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:45,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:50:45,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:45,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:50:45,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:45,167 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:45,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:50:45,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:50:45,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:50:45,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:45,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-10-14 17:50:45,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:45,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:45,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:45,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:50:45,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:45,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:50:45,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:45,171 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:45,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:50:45,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:50:45,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:50:45,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:45,226 INFO L134 CoverageAnalysis]: Checked inductivity of 694 backedges. 22 proven. 452 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2020-10-14 17:50:45,226 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [189156525] [2020-10-14 17:50:45,226 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:50:45,226 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-14 17:50:45,226 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034622447] [2020-10-14 17:50:45,227 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-14 17:50:45,227 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:50:45,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-14 17:50:45,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=870, Unknown=0, NotChecked=0, Total=930 [2020-10-14 17:50:45,227 INFO L87 Difference]: Start difference. First operand 326 states and 390 transitions. Second operand 31 states. [2020-10-14 17:50:50,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:50:50,049 INFO L93 Difference]: Finished difference Result 357 states and 424 transitions. [2020-10-14 17:50:50,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-14 17:50:50,050 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 140 [2020-10-14 17:50:50,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:50:50,051 INFO L225 Difference]: With dead ends: 357 [2020-10-14 17:50:50,052 INFO L226 Difference]: Without dead ends: 355 [2020-10-14 17:50:50,052 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=125, Invalid=1945, Unknown=0, NotChecked=0, Total=2070 [2020-10-14 17:50:50,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2020-10-14 17:50:50,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 334. [2020-10-14 17:50:50,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 334 states. [2020-10-14 17:50:50,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 398 transitions. [2020-10-14 17:50:50,097 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 398 transitions. Word has length 140 [2020-10-14 17:50:50,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:50:50,097 INFO L479 AbstractCegarLoop]: Abstraction has 334 states and 398 transitions. [2020-10-14 17:50:50,097 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-14 17:50:50,097 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 398 transitions. [2020-10-14 17:50:50,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-14 17:50:50,099 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:50:50,099 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:50:50,099 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2020-10-14 17:50:50,099 INFO L427 AbstractCegarLoop]: === Iteration 51 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:50:50,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:50:50,100 INFO L82 PathProgramCache]: Analyzing trace with hash -1365810927, now seen corresponding path program 33 times [2020-10-14 17:50:50,100 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:50:50,100 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2112474575] [2020-10-14 17:50:50,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:50:50,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:50,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:50,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:50,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:52,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:52,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-14 17:50:52,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 17:50:52,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2357 [2020-10-14 17:50:52,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:52,465 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:52,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-14 17:50:52,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 17:50:52,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 160 [2020-10-14 17:50:52,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:52,658 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 27 [2020-10-14 17:50:52,816 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 30 [2020-10-14 17:50:52,951 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 33 [2020-10-14 17:50:53,086 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 36 [2020-10-14 17:50:53,262 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 31 [2020-10-14 17:50:53,406 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 36 [2020-10-14 17:50:53,595 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 33 [2020-10-14 17:50:53,758 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 34 [2020-10-14 17:50:53,925 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 36 [2020-10-14 17:50:54,122 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 33 [2020-10-14 17:50:54,319 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 31 [2020-10-14 17:50:54,509 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 36 [2020-10-14 17:50:54,741 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 49 [2020-10-14 17:50:54,967 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 45 [2020-10-14 17:50:55,178 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 38 [2020-10-14 17:50:56,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:50:56,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:56,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:56,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:56,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:50:56,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:56,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:50:56,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:56,503 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:56,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:50:56,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:50:56,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:50:56,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:56,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-14 17:50:56,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:56,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:56,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:56,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:50:56,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:56,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:50:56,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:56,507 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:56,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:50:56,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:50:56,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:50:56,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:56,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-14 17:50:56,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:56,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:56,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:56,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:50:56,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:56,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:50:56,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:56,511 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:56,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:50:56,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:50:56,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:50:56,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:56,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-14 17:50:56,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:56,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:56,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:56,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:50:56,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:56,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:50:56,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:56,515 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:56,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:50:56,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:50:56,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:50:56,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:56,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-14 17:50:56,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:56,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:56,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:56,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:50:56,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:56,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:50:56,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:56,520 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:56,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:50:56,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:50:56,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:50:56,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:56,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-14 17:50:56,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:56,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:56,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:56,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:50:56,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:56,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:50:56,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:56,526 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:56,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:50:56,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:50:56,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:50:56,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:56,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-14 17:50:56,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:56,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:56,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:56,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:50:56,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:56,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:50:56,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:56,532 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:56,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:50:56,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:50:56,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:50:56,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:56,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-14 17:50:56,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:56,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:56,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:56,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:50:56,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:56,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:50:56,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:56,537 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:56,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:50:56,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:50:56,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:50:56,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:56,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-14 17:50:56,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:56,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:56,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:56,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:50:56,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:56,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:50:56,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:56,543 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:56,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:50:56,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:50:56,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:50:56,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:56,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-14 17:50:56,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:56,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:56,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:56,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:50:56,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:56,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:50:56,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:56,549 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:56,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:50:56,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:50:56,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:50:56,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:56,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-10-14 17:50:56,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:56,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:56,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:56,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:50:56,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:56,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:50:56,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:56,555 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:56,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:50:56,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:50:56,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:50:56,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:56,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-14 17:50:56,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:56,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:56,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:56,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:50:56,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:56,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:50:56,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:56,560 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:56,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:50:56,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:50:56,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:50:56,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:56,640 INFO L134 CoverageAnalysis]: Checked inductivity of 731 backedges. 22 proven. 489 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2020-10-14 17:50:56,640 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2112474575] [2020-10-14 17:50:56,640 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:50:56,640 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-10-14 17:50:56,640 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096352325] [2020-10-14 17:50:56,641 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-14 17:50:56,641 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:50:56,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-14 17:50:56,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=1052, Unknown=0, NotChecked=0, Total=1122 [2020-10-14 17:50:56,641 INFO L87 Difference]: Start difference. First operand 334 states and 398 transitions. Second operand 34 states. [2020-10-14 17:50:57,610 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 42 [2020-10-14 17:50:58,110 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 42 [2020-10-14 17:50:58,604 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 41 [2020-10-14 17:50:58,851 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 42 [2020-10-14 17:50:59,332 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 38 [2020-10-14 17:50:59,603 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 40 [2020-10-14 17:50:59,826 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 49 [2020-10-14 17:51:00,372 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 43 [2020-10-14 17:51:01,006 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 44 [2020-10-14 17:51:01,419 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 44 [2020-10-14 17:51:01,748 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 44 [2020-10-14 17:51:02,082 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 44 [2020-10-14 17:51:02,432 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 44 [2020-10-14 17:51:02,766 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 44 [2020-10-14 17:51:03,108 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 44 [2020-10-14 17:51:03,447 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 44 [2020-10-14 17:51:03,777 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 44 [2020-10-14 17:51:04,113 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 43 [2020-10-14 17:51:04,448 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 43 [2020-10-14 17:51:04,636 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 46 [2020-10-14 17:51:05,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:51:05,087 INFO L93 Difference]: Finished difference Result 421 states and 504 transitions. [2020-10-14 17:51:05,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-10-14 17:51:05,088 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 142 [2020-10-14 17:51:05,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:51:05,091 INFO L225 Difference]: With dead ends: 421 [2020-10-14 17:51:05,091 INFO L226 Difference]: Without dead ends: 419 [2020-10-14 17:51:05,092 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 524 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=207, Invalid=3699, Unknown=0, NotChecked=0, Total=3906 [2020-10-14 17:51:05,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2020-10-14 17:51:05,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 287. [2020-10-14 17:51:05,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2020-10-14 17:51:05,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 327 transitions. [2020-10-14 17:51:05,122 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 327 transitions. Word has length 142 [2020-10-14 17:51:05,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:51:05,123 INFO L479 AbstractCegarLoop]: Abstraction has 287 states and 327 transitions. [2020-10-14 17:51:05,123 INFO L480 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-10-14 17:51:05,123 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 327 transitions. [2020-10-14 17:51:05,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-10-14 17:51:05,124 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:51:05,124 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:51:05,124 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2020-10-14 17:51:05,124 INFO L427 AbstractCegarLoop]: === Iteration 52 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:51:05,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:51:05,124 INFO L82 PathProgramCache]: Analyzing trace with hash 1520258679, now seen corresponding path program 34 times [2020-10-14 17:51:05,125 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:51:05,125 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1782138758] [2020-10-14 17:51:05,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:51:05,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:51:05,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:05,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:05,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:51:05,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-10-14 17:51:05,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:51:05,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 799 [2020-10-14 17:51:05,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:51:05,931 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:51:05,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 17:51:05,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 17:51:05,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-14 17:51:05,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:51:06,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:51:06,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:51:06,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:06,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:51:06,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:51:06,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:51:06,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:51:06,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:51:06,109 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:51:06,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:51:06,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:51:06,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:51:06,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:51:06,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-14 17:51:06,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:51:06,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:06,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:51:06,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:51:06,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:51:06,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:51:06,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:51:06,112 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:51:06,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:51:06,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:51:06,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:51:06,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:51:06,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-14 17:51:06,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:51:06,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:06,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:51:06,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:51:06,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:51:06,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:51:06,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:51:06,114 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:51:06,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:51:06,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:51:06,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:51:06,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:51:06,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-14 17:51:06,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:51:06,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:06,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:51:06,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:51:06,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:51:06,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:51:06,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:51:06,117 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:51:06,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:51:06,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:51:06,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:51:06,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:51:06,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-14 17:51:06,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:51:06,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:06,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:51:06,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:51:06,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:51:06,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:51:06,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:51:06,119 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:51:06,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:51:06,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:51:06,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:51:06,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:51:06,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-14 17:51:06,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:51:06,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:06,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:51:06,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:51:06,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:51:06,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:51:06,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:51:06,122 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:51:06,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:51:06,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:51:06,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:51:06,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:51:06,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-14 17:51:06,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:51:06,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:06,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:51:06,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:51:06,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:51:06,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:51:06,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:51:06,126 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:51:06,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:51:06,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:51:06,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:51:06,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:51:06,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 17:51:06,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:51:06,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:06,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:51:06,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:51:06,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:51:06,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:51:06,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:51:06,129 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:51:06,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:51:06,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:51:06,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:51:06,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:51:06,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-14 17:51:06,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:51:06,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:06,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:51:06,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:51:06,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:51:06,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:51:06,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:51:06,133 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:51:06,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:51:06,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:51:06,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:51:06,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:51:06,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-14 17:51:06,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:51:06,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:06,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:51:06,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:51:06,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:51:06,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:51:06,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:51:06,137 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:51:06,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:51:06,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:51:06,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:51:06,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:51:06,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-14 17:51:06,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:51:06,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:06,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:51:06,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:51:06,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:51:06,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:51:06,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:51:06,142 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:51:06,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:51:06,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:51:06,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:51:06,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:51:06,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-14 17:51:06,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:51:06,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:06,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:51:06,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:51:06,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:51:06,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:51:06,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:51:06,146 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:51:06,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:51:06,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:51:06,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:51:06,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:51:06,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-14 17:51:06,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:51:06,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:06,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:51:06,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:51:06,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:51:06,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:51:06,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:51:06,150 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:51:06,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:51:06,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 17:51:06,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:51:06,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:51:06,165 INFO L134 CoverageAnalysis]: Checked inductivity of 786 backedges. 24 proven. 210 refuted. 0 times theorem prover too weak. 552 trivial. 0 not checked. [2020-10-14 17:51:06,165 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1782138758] [2020-10-14 17:51:06,165 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:51:06,165 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 17:51:06,166 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552927280] [2020-10-14 17:51:06,166 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 17:51:06,166 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:51:06,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 17:51:06,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-14 17:51:06,167 INFO L87 Difference]: Start difference. First operand 287 states and 327 transitions. Second operand 16 states. [2020-10-14 17:51:06,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:51:06,392 INFO L93 Difference]: Finished difference Result 504 states and 564 transitions. [2020-10-14 17:51:06,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 17:51:06,393 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 147 [2020-10-14 17:51:06,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:51:06,395 INFO L225 Difference]: With dead ends: 504 [2020-10-14 17:51:06,396 INFO L226 Difference]: Without dead ends: 297 [2020-10-14 17:51:06,397 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-14 17:51:06,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2020-10-14 17:51:06,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 293. [2020-10-14 17:51:06,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 293 states. [2020-10-14 17:51:06,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 335 transitions. [2020-10-14 17:51:06,437 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 335 transitions. Word has length 147 [2020-10-14 17:51:06,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:51:06,437 INFO L479 AbstractCegarLoop]: Abstraction has 293 states and 335 transitions. [2020-10-14 17:51:06,437 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 17:51:06,437 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 335 transitions. [2020-10-14 17:51:06,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-10-14 17:51:06,438 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:51:06,439 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:51:06,439 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2020-10-14 17:51:06,439 INFO L427 AbstractCegarLoop]: === Iteration 53 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:51:06,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:51:06,439 INFO L82 PathProgramCache]: Analyzing trace with hash 105342485, now seen corresponding path program 35 times [2020-10-14 17:51:06,439 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:51:06,440 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2122205180] [2020-10-14 17:51:06,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:51:06,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:51:06,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:06,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:07,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:09,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:51:09,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-10-14 17:51:09,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 17:51:09,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2800 [2020-10-14 17:51:09,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:51:09,248 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:51:09,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-14 17:51:09,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 17:51:09,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 170 [2020-10-14 17:51:09,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:51:09,446 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 33 [2020-10-14 17:51:09,586 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 33 [2020-10-14 17:51:09,722 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 34 [2020-10-14 17:51:09,865 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 34 [2020-10-14 17:51:10,009 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 34 [2020-10-14 17:51:10,165 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 34 [2020-10-14 17:51:10,319 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 34 [2020-10-14 17:51:10,480 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 34 [2020-10-14 17:51:10,641 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 34 [2020-10-14 17:51:10,817 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 34 [2020-10-14 17:51:10,989 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 34 [2020-10-14 17:51:11,167 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 34 [2020-10-14 17:51:11,340 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 29 [2020-10-14 17:51:11,545 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 42 [2020-10-14 17:51:11,749 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 39 [2020-10-14 17:51:13,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:51:13,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:51:13,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:13,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:51:13,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:51:13,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:51:13,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:51:13,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:51:13,760 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:51:13,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:51:13,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:51:13,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:51:13,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:51:13,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-14 17:51:13,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:51:13,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:13,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:51:13,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:51:13,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:51:13,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:51:13,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:51:13,765 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:51:13,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:51:13,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:51:13,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:51:13,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:51:13,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-14 17:51:13,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:51:13,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:13,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:51:13,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:51:13,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:51:13,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:51:13,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:51:13,769 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:51:13,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:51:13,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:51:13,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:51:13,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:51:13,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-14 17:51:13,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:51:13,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:13,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:51:13,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:51:13,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:51:13,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:51:13,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:51:13,775 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:51:13,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:51:13,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:51:13,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:51:13,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:51:13,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-14 17:51:13,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:51:13,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:13,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:51:13,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:51:13,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:51:13,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:51:13,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:51:13,781 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:51:13,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:51:13,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:51:13,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:51:13,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:51:13,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-14 17:51:13,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:51:13,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:13,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:51:13,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:51:13,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:51:13,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:51:13,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:51:13,788 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:51:13,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:51:13,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:51:13,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:51:13,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:51:13,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-14 17:51:13,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:51:13,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:13,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:51:13,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:51:13,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:51:13,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:51:13,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:51:13,794 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:51:13,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:51:13,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:51:13,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:51:13,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:51:13,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-14 17:51:13,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:51:13,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:13,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:51:13,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:51:13,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:51:13,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:51:13,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:51:13,801 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:51:13,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:51:13,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:51:13,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:51:13,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:51:13,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-14 17:51:13,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:51:13,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:13,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:51:13,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:51:13,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:51:13,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:51:13,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:51:13,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:51:13,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:51:13,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:51:13,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:51:13,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:51:13,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-14 17:51:13,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:51:13,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:13,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:51:13,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:51:13,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:51:13,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:51:13,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:51:13,811 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:51:13,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:51:13,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:51:13,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:51:13,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:51:13,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-10-14 17:51:13,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:51:13,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:13,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:51:13,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:51:13,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:51:13,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:51:13,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:51:13,816 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:51:13,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:51:13,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:51:13,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:51:13,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:51:13,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-14 17:51:13,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:51:13,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:13,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:51:13,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:51:13,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:51:13,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:51:13,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:51:13,821 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:51:13,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:51:13,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:51:13,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:51:13,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:51:13,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-10-14 17:51:13,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:51:13,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:13,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:51:13,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:51:13,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:51:13,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 17:51:13,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:51:13,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:51:13,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:51:13,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:51:13,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:51:13,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:51:13,920 INFO L134 CoverageAnalysis]: Checked inductivity of 823 backedges. 24 proven. 535 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2020-10-14 17:51:13,921 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2122205180] [2020-10-14 17:51:13,921 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:51:13,921 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2020-10-14 17:51:13,921 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995812237] [2020-10-14 17:51:13,921 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-10-14 17:51:13,922 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:51:13,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-10-14 17:51:13,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=1119, Unknown=0, NotChecked=0, Total=1190 [2020-10-14 17:51:13,922 INFO L87 Difference]: Start difference. First operand 293 states and 335 transitions. Second operand 35 states. [2020-10-14 17:51:14,257 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 39 [2020-10-14 17:51:14,459 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 39 [2020-10-14 17:51:14,718 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 40 [2020-10-14 17:51:14,977 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 40 [2020-10-14 17:51:15,249 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 40 [2020-10-14 17:51:15,506 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 40 [2020-10-14 17:51:15,790 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 40 [2020-10-14 17:51:16,056 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 40 [2020-10-14 17:51:16,318 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 40 [2020-10-14 17:51:16,583 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 40 [2020-10-14 17:51:16,848 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 40 [2020-10-14 17:51:17,114 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 40 [2020-10-14 17:51:17,583 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 44 [2020-10-14 17:51:21,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:51:21,970 INFO L93 Difference]: Finished difference Result 433 states and 521 transitions. [2020-10-14 17:51:21,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2020-10-14 17:51:21,971 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 150 [2020-10-14 17:51:21,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:51:21,973 INFO L225 Difference]: With dead ends: 433 [2020-10-14 17:51:21,973 INFO L226 Difference]: Without dead ends: 431 [2020-10-14 17:51:21,974 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 559 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=199, Invalid=3961, Unknown=0, NotChecked=0, Total=4160 [2020-10-14 17:51:21,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2020-10-14 17:51:22,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 352. [2020-10-14 17:51:22,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 352 states. [2020-10-14 17:51:22,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 421 transitions. [2020-10-14 17:51:22,020 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 421 transitions. Word has length 150 [2020-10-14 17:51:22,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:51:22,020 INFO L479 AbstractCegarLoop]: Abstraction has 352 states and 421 transitions. [2020-10-14 17:51:22,020 INFO L480 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-10-14 17:51:22,020 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 421 transitions. [2020-10-14 17:51:22,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-10-14 17:51:22,022 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:51:22,022 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:51:22,022 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2020-10-14 17:51:22,022 INFO L427 AbstractCegarLoop]: === Iteration 54 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:51:22,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:51:22,022 INFO L82 PathProgramCache]: Analyzing trace with hash 1645954506, now seen corresponding path program 13 times [2020-10-14 17:51:22,023 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:51:22,023 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2027915914] [2020-10-14 17:51:22,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:51:22,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:51:22,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:22,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:22,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:25,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:51:25,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-14 17:51:25,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 17:51:25,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3734 [2020-10-14 17:51:25,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:51:25,765 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:51:25,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-14 17:51:25,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 17:51:25,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 171 [2020-10-14 17:51:25,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:51:27,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:51:27,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:51:27,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:27,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:51:27,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:51:27,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:51:27,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:51:27,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:51:27,710 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:51:27,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:51:27,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:51:27,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:51:27,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:51:27,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-14 17:51:27,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:51:27,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:27,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:51:27,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:51:27,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:51:27,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:51:27,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:51:27,714 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:51:27,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:51:27,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:51:27,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:51:27,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:51:27,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-14 17:51:27,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:51:27,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:27,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:51:27,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:51:27,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:51:27,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:51:27,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:51:27,718 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:51:27,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:51:27,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:51:27,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:51:27,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:51:27,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-14 17:51:27,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:51:27,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:27,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:51:27,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:51:27,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:51:27,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:51:27,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:51:27,721 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:51:27,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:51:27,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:51:27,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:51:27,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:51:27,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-14 17:51:27,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:51:27,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:27,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:51:27,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:51:27,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:51:27,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:51:27,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:51:27,725 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:51:27,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:51:27,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:51:27,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:51:27,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:51:27,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-14 17:51:27,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:51:27,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:27,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:51:27,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:51:27,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:51:27,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:51:27,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:51:27,728 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:51:27,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:51:27,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:51:27,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:51:27,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:51:27,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-14 17:51:27,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:51:27,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:27,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:51:27,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:51:27,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:51:27,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:51:27,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:51:27,732 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:51:27,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:51:27,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:51:27,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:51:27,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:51:27,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-14 17:51:27,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:51:27,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:27,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:51:27,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:51:27,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:51:27,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:51:27,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:51:27,737 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:51:27,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:51:27,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:51:27,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:51:27,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:51:27,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-14 17:51:27,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:51:27,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:27,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:51:27,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:51:27,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:51:27,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:51:27,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:51:27,743 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:51:27,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:51:27,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:51:27,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:51:27,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:51:27,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-10-14 17:51:27,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:51:27,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:27,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:51:27,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:51:27,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:51:27,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:51:27,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:51:27,749 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:51:27,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:51:27,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:51:27,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:51:27,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:51:27,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-14 17:51:27,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:51:27,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:27,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:51:27,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:51:27,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:51:27,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:51:27,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:51:27,755 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:51:27,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:51:27,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:51:27,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:51:27,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:51:27,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-14 17:51:27,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:51:27,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:27,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:51:27,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:51:27,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:51:27,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:51:27,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:51:27,761 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:51:27,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:51:27,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:51:27,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:51:27,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:51:27,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-14 17:51:27,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:51:27,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:27,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:51:27,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:51:27,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:51:27,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:51:27,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:51:27,767 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:51:27,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:51:27,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:51:27,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:51:27,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:51:27,852 INFO L134 CoverageAnalysis]: Checked inductivity of 823 backedges. 24 proven. 535 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2020-10-14 17:51:27,852 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2027915914] [2020-10-14 17:51:27,853 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:51:27,853 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-10-14 17:51:27,853 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495588990] [2020-10-14 17:51:27,853 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-10-14 17:51:27,853 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:51:27,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-10-14 17:51:27,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=993, Unknown=0, NotChecked=0, Total=1056 [2020-10-14 17:51:27,854 INFO L87 Difference]: Start difference. First operand 352 states and 421 transitions. Second operand 33 states. [2020-10-14 17:51:34,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:51:34,132 INFO L93 Difference]: Finished difference Result 442 states and 530 transitions. [2020-10-14 17:51:34,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-14 17:51:34,133 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 151 [2020-10-14 17:51:34,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:51:34,135 INFO L225 Difference]: With dead ends: 442 [2020-10-14 17:51:34,136 INFO L226 Difference]: Without dead ends: 440 [2020-10-14 17:51:34,136 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=136, Invalid=2314, Unknown=0, NotChecked=0, Total=2450 [2020-10-14 17:51:34,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2020-10-14 17:51:34,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 416. [2020-10-14 17:51:34,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 416 states. [2020-10-14 17:51:34,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 501 transitions. [2020-10-14 17:51:34,196 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 501 transitions. Word has length 151 [2020-10-14 17:51:34,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:51:34,196 INFO L479 AbstractCegarLoop]: Abstraction has 416 states and 501 transitions. [2020-10-14 17:51:34,196 INFO L480 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-10-14 17:51:34,196 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 501 transitions. [2020-10-14 17:51:34,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-10-14 17:51:34,198 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:51:34,198 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 13, 13, 13, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:51:34,198 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2020-10-14 17:51:34,198 INFO L427 AbstractCegarLoop]: === Iteration 55 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:51:34,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:51:34,198 INFO L82 PathProgramCache]: Analyzing trace with hash -853950025, now seen corresponding path program 36 times [2020-10-14 17:51:34,199 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:51:34,199 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1761783955] [2020-10-14 17:51:34,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:51:34,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:51:34,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:34,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:35,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:35,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:51:35,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 185 [2020-10-14 17:51:35,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 17:51:35,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1644 [2020-10-14 17:51:35,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:51:35,851 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:51:35,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-14 17:51:35,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 17:51:35,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 173 [2020-10-14 17:51:35,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:51:36,082 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 30 [2020-10-14 17:51:36,264 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 35 [2020-10-14 17:51:36,463 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 36 [2020-10-14 17:51:36,652 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 36 [2020-10-14 17:51:36,839 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 36 [2020-10-14 17:51:37,039 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 36 [2020-10-14 17:51:37,243 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 36