/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/float-benchs/zonotope_3.c.p+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 23:15:48,022 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 23:15:48,025 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 23:15:48,050 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 23:15:48,051 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 23:15:48,052 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 23:15:48,054 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 23:15:48,056 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 23:15:48,058 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 23:15:48,060 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 23:15:48,061 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 23:15:48,062 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 23:15:48,063 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 23:15:48,066 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 23:15:48,067 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 23:15:48,071 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 23:15:48,072 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 23:15:48,077 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 23:15:48,079 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 23:15:48,082 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 23:15:48,087 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 23:15:48,092 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 23:15:48,094 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 23:15:48,095 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 23:15:48,099 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 23:15:48,100 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 23:15:48,102 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 23:15:48,103 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 23:15:48,104 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 23:15:48,109 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 23:15:48,109 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 23:15:48,109 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 23:15:48,110 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 23:15:48,111 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 23:15:48,113 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 23:15:48,114 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 23:15:48,115 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 23:15:48,115 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 23:15:48,115 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 23:15:48,117 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 23:15:48,119 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 23:15:48,120 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 23:15:48,183 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 23:15:48,183 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 23:15:48,185 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 23:15:48,186 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 23:15:48,186 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 23:15:48,189 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 23:15:48,190 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 23:15:48,190 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 23:15:48,190 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 23:15:48,190 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 23:15:48,190 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 23:15:48,191 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 23:15:48,191 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 23:15:48,191 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 23:15:48,191 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 23:15:48,191 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 23:15:48,191 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 23:15:48,192 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 23:15:48,192 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 23:15:48,193 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 23:15:48,193 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 23:15:48,193 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 23:15:48,193 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 23:15:48,194 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 23:15:48,194 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 23:15:48,194 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 23:15:48,195 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 23:15:48,195 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 23:15:48,195 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 23:15:48,195 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 23:15:48,545 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 23:15:48,560 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 23:15:48,565 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 23:15:48,567 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 23:15:48,567 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 23:15:48,568 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-benchs/zonotope_3.c.p+cfa-reducer.c [2020-10-14 23:15:48,663 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2f9984806/df39dafafda54f7eb4221a7472705f96/FLAG604dcdb14 [2020-10-14 23:15:49,213 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 23:15:49,214 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-benchs/zonotope_3.c.p+cfa-reducer.c [2020-10-14 23:15:49,225 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2f9984806/df39dafafda54f7eb4221a7472705f96/FLAG604dcdb14 [2020-10-14 23:15:49,556 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2f9984806/df39dafafda54f7eb4221a7472705f96 [2020-10-14 23:15:49,571 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 23:15:49,573 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 23:15:49,575 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 23:15:49,575 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 23:15:49,580 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 23:15:49,582 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:15:49" (1/1) ... [2020-10-14 23:15:49,587 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b3b83ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:15:49, skipping insertion in model container [2020-10-14 23:15:49,587 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:15:49" (1/1) ... [2020-10-14 23:15:49,597 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 23:15:49,629 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 23:15:49,977 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:15:49,984 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 23:15:50,016 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:15:50,036 INFO L208 MainTranslator]: Completed translation [2020-10-14 23:15:50,037 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:15:50 WrapperNode [2020-10-14 23:15:50,037 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 23:15:50,038 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 23:15:50,038 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 23:15:50,039 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 23:15:50,183 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:15:50" (1/1) ... [2020-10-14 23:15:50,185 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:15:50" (1/1) ... [2020-10-14 23:15:50,194 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:15:50" (1/1) ... [2020-10-14 23:15:50,195 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:15:50" (1/1) ... [2020-10-14 23:15:50,202 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:15:50" (1/1) ... [2020-10-14 23:15:50,207 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:15:50" (1/1) ... [2020-10-14 23:15:50,208 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:15:50" (1/1) ... [2020-10-14 23:15:50,211 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 23:15:50,212 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 23:15:50,212 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 23:15:50,212 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 23:15:50,214 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:15:50" (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 23:15:50,277 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 23:15:50,278 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 23:15:50,278 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-14 23:15:50,278 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 23:15:50,278 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 23:15:50,278 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-10-14 23:15:50,279 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 23:15:50,279 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-14 23:15:50,281 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-14 23:15:50,282 INFO L130 BoogieDeclarations]: Found specification of procedure f [2020-10-14 23:15:50,282 INFO L130 BoogieDeclarations]: Found specification of procedure g [2020-10-14 23:15:50,282 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 23:15:50,282 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 23:15:50,282 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 23:15:50,572 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 23:15:50,573 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-14 23:15:50,579 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:15:50 BoogieIcfgContainer [2020-10-14 23:15:50,580 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 23:15:50,594 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 23:15:50,594 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 23:15:50,604 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 23:15:50,605 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:15:49" (1/3) ... [2020-10-14 23:15:50,606 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14a7b0cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:15:50, skipping insertion in model container [2020-10-14 23:15:50,607 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:15:50" (2/3) ... [2020-10-14 23:15:50,608 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14a7b0cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:15:50, skipping insertion in model container [2020-10-14 23:15:50,608 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:15:50" (3/3) ... [2020-10-14 23:15:50,611 INFO L109 eAbstractionObserver]: Analyzing ICFG zonotope_3.c.p+cfa-reducer.c [2020-10-14 23:15:50,656 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 23:15:50,667 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 23:15:50,686 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 23:15:50,716 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 23:15:50,716 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 23:15:50,717 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 23:15:50,717 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 23:15:50,717 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 23:15:50,717 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 23:15:50,717 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 23:15:50,718 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 23:15:50,739 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2020-10-14 23:15:50,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-14 23:15:50,746 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:15:50,747 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:15:50,748 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:15:50,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:15:50,754 INFO L82 PathProgramCache]: Analyzing trace with hash 351328408, now seen corresponding path program 1 times [2020-10-14 23:15:50,761 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:15:50,761 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [339483464] [2020-10-14 23:15:50,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:15:50,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:15:50,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:15:50,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:15:51,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:15:51,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 23:15:51,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:15:51,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 509 [2020-10-14 23:15:51,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:15:51,414 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:15:51,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 23:15:51,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 23:15:51,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-14 23:15:51,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-14 23:15:51,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:15:51,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:15:51,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:15:51,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:15:51,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:15:51,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:15:51,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 23:15:51,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:15:51,610 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:15:51,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:15:51,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:15:51,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:15:51,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 23:15:51,631 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 23:15:51,633 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [339483464] [2020-10-14 23:15:51,636 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:15:51,636 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 23:15:51,638 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878507233] [2020-10-14 23:15:51,644 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 23:15:51,645 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:15:51,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 23:15:51,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 23:15:51,660 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 5 states. [2020-10-14 23:15:51,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:15:51,823 INFO L93 Difference]: Finished difference Result 32 states and 38 transitions. [2020-10-14 23:15:51,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 23:15:51,825 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-10-14 23:15:51,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:15:51,838 INFO L225 Difference]: With dead ends: 32 [2020-10-14 23:15:51,839 INFO L226 Difference]: Without dead ends: 18 [2020-10-14 23:15:51,843 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 23:15:51,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-10-14 23:15:51,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-10-14 23:15:51,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-10-14 23:15:51,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 21 transitions. [2020-10-14 23:15:51,889 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 21 transitions. Word has length 12 [2020-10-14 23:15:51,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:15:51,890 INFO L479 AbstractCegarLoop]: Abstraction has 18 states and 21 transitions. [2020-10-14 23:15:51,890 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 23:15:51,890 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2020-10-14 23:15:51,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-14 23:15:51,891 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:15:51,891 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:15:51,891 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 23:15:51,892 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:15:51,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:15:51,892 INFO L82 PathProgramCache]: Analyzing trace with hash 366432445, now seen corresponding path program 1 times [2020-10-14 23:15:51,892 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:15:51,893 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [223322456] [2020-10-14 23:15:51,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:15:51,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:15:51,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:15:51,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:15:51,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 23:15:51,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:15:51,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-14 23:15:51,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:15:51,954 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:15:51,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:15:51,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:15:51,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 23:15:51,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:15:52,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:15:52,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:15:52,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:15:52,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:15:52,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:15:52,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:15:52,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 23:15:52,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:15:52,017 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:15:52,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:15:52,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:15:52,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:15:52,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:15:52,022 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 23:15:52,023 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [223322456] [2020-10-14 23:15:52,023 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:15:52,024 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 23:15:52,024 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949293026] [2020-10-14 23:15:52,026 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 23:15:52,027 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:15:52,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 23:15:52,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 23:15:52,028 INFO L87 Difference]: Start difference. First operand 18 states and 21 transitions. Second operand 4 states. [2020-10-14 23:15:52,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:15:52,107 INFO L93 Difference]: Finished difference Result 30 states and 36 transitions. [2020-10-14 23:15:52,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 23:15:52,108 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-14 23:15:52,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:15:52,109 INFO L225 Difference]: With dead ends: 30 [2020-10-14 23:15:52,110 INFO L226 Difference]: Without dead ends: 23 [2020-10-14 23:15:52,111 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 23:15:52,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-10-14 23:15:52,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 19. [2020-10-14 23:15:52,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-10-14 23:15:52,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 22 transitions. [2020-10-14 23:15:52,119 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 22 transitions. Word has length 12 [2020-10-14 23:15:52,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:15:52,120 INFO L479 AbstractCegarLoop]: Abstraction has 19 states and 22 transitions. [2020-10-14 23:15:52,120 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 23:15:52,120 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 22 transitions. [2020-10-14 23:15:52,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-14 23:15:52,121 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:15:52,121 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:15:52,121 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 23:15:52,122 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:15:52,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:15:52,122 INFO L82 PathProgramCache]: Analyzing trace with hash 1576641705, now seen corresponding path program 1 times [2020-10-14 23:15:52,122 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:15:52,123 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [516682909] [2020-10-14 23:15:52,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:15:52,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:15:52,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:15:52,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:15:52,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:15:52,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 23:15:52,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:15:52,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-14 23:15:52,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:15:52,226 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:15:52,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 23:15:52,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:15:52,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 23:15:52,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:15:52,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:15:52,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:15:52,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:15:52,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:15:52,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:15:52,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:15:52,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 23:15:52,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:15:52,293 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:15:52,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:15:52,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:15:52,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:15:52,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:15:52,300 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 23:15:52,300 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [516682909] [2020-10-14 23:15:52,301 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:15:52,301 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 23:15:52,301 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938559143] [2020-10-14 23:15:52,302 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 23:15:52,302 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:15:52,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 23:15:52,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 23:15:52,303 INFO L87 Difference]: Start difference. First operand 19 states and 22 transitions. Second operand 5 states. [2020-10-14 23:15:52,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:15:52,373 INFO L93 Difference]: Finished difference Result 35 states and 43 transitions. [2020-10-14 23:15:52,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 23:15:52,374 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-10-14 23:15:52,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:15:52,375 INFO L225 Difference]: With dead ends: 35 [2020-10-14 23:15:52,376 INFO L226 Difference]: Without dead ends: 28 [2020-10-14 23:15:52,377 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 23:15:52,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-14 23:15:52,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 24. [2020-10-14 23:15:52,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-10-14 23:15:52,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 29 transitions. [2020-10-14 23:15:52,385 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 29 transitions. Word has length 16 [2020-10-14 23:15:52,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:15:52,385 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 29 transitions. [2020-10-14 23:15:52,386 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 23:15:52,386 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 29 transitions. [2020-10-14 23:15:52,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-14 23:15:52,387 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:15:52,387 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:15:52,388 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 23:15:52,388 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:15:52,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:15:52,389 INFO L82 PathProgramCache]: Analyzing trace with hash 1673011861, now seen corresponding path program 2 times [2020-10-14 23:15:52,389 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:15:52,389 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1303117394] [2020-10-14 23:15:52,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:15:52,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:15:52,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:15:52,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:15:52,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:15:52,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:15:52,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 23:15:52,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:15:52,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 215 [2020-10-14 23:15:52,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:15:52,620 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:15:52,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:15:52,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:15:52,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:15:52,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:15:52,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:15:52,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:15:52,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:15:52,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:15:52,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:15:52,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:15:52,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 23:15:52,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:15:52,693 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:15:52,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:15:52,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:15:52,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:15:52,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:15:52,698 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:15:52,699 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1303117394] [2020-10-14 23:15:52,699 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:15:52,699 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 23:15:52,700 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079240798] [2020-10-14 23:15:52,700 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 23:15:52,700 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:15:52,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 23:15:52,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 23:15:52,701 INFO L87 Difference]: Start difference. First operand 24 states and 29 transitions. Second operand 6 states. [2020-10-14 23:15:52,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:15:52,772 INFO L93 Difference]: Finished difference Result 40 states and 50 transitions. [2020-10-14 23:15:52,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 23:15:52,773 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2020-10-14 23:15:52,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:15:52,774 INFO L225 Difference]: With dead ends: 40 [2020-10-14 23:15:52,775 INFO L226 Difference]: Without dead ends: 33 [2020-10-14 23:15:52,775 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 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 23:15:52,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-10-14 23:15:52,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 29. [2020-10-14 23:15:52,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-14 23:15:52,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 36 transitions. [2020-10-14 23:15:52,784 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 36 transitions. Word has length 20 [2020-10-14 23:15:52,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:15:52,784 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 36 transitions. [2020-10-14 23:15:52,784 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 23:15:52,785 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 36 transitions. [2020-10-14 23:15:52,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-14 23:15:52,786 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:15:52,786 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:15:52,786 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 23:15:52,787 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:15:52,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:15:52,787 INFO L82 PathProgramCache]: Analyzing trace with hash 1223543425, now seen corresponding path program 3 times [2020-10-14 23:15:52,788 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:15:52,788 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1470440593] [2020-10-14 23:15:52,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:15:52,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:15:52,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:15:52,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:15:52,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:15:52,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:15:53,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:15:53,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-14 23:15:53,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 23:15:53,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 397 [2020-10-14 23:15:53,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:15:53,201 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:15:53,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 23:15:53,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:15:53,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 23:15:53,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:15:53,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:15:53,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:15:53,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:15:53,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:15:53,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:15:53,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:15:53,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 23:15:53,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:15:53,293 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:15:53,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:15:53,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:15:53,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:15:53,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:15:53,299 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:15:53,300 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1470440593] [2020-10-14 23:15:53,301 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:15:53,302 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 23:15:53,302 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688054622] [2020-10-14 23:15:53,304 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 23:15:53,304 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:15:53,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 23:15:53,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-14 23:15:53,307 INFO L87 Difference]: Start difference. First operand 29 states and 36 transitions. Second operand 7 states. [2020-10-14 23:15:53,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:15:53,391 INFO L93 Difference]: Finished difference Result 45 states and 57 transitions. [2020-10-14 23:15:53,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 23:15:53,391 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 24 [2020-10-14 23:15:53,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:15:53,393 INFO L225 Difference]: With dead ends: 45 [2020-10-14 23:15:53,393 INFO L226 Difference]: Without dead ends: 38 [2020-10-14 23:15:53,394 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 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 23:15:53,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-14 23:15:53,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 34. [2020-10-14 23:15:53,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-14 23:15:53,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 43 transitions. [2020-10-14 23:15:53,403 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 43 transitions. Word has length 24 [2020-10-14 23:15:53,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:15:53,404 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 43 transitions. [2020-10-14 23:15:53,404 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 23:15:53,404 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 43 transitions. [2020-10-14 23:15:53,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-14 23:15:53,405 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:15:53,405 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:15:53,406 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 23:15:53,406 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:15:53,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:15:53,407 INFO L82 PathProgramCache]: Analyzing trace with hash -906650515, now seen corresponding path program 4 times [2020-10-14 23:15:53,407 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:15:53,407 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1240667590] [2020-10-14 23:15:53,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:15:53,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:15:53,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:15:53,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:15:53,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:15:53,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:15:53,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:15:53,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:15:53,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-14 23:15:53,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 23:15:53,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 562 [2020-10-14 23:15:53,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:15:53,984 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:15:53,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:15:53,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:15:53,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 23:15:53,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:15:54,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:15:54,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:15:54,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:15:54,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:15:54,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:15:54,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:15:54,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 23:15:54,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:15:54,079 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:15:54,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:15:54,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:15:54,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:15:54,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:15:54,084 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:15:54,085 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1240667590] [2020-10-14 23:15:54,085 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:15:54,086 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 23:15:54,086 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636303612] [2020-10-14 23:15:54,086 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 23:15:54,087 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:15:54,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 23:15:54,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 23:15:54,088 INFO L87 Difference]: Start difference. First operand 34 states and 43 transitions. Second operand 8 states. [2020-10-14 23:15:54,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:15:54,162 INFO L93 Difference]: Finished difference Result 50 states and 64 transitions. [2020-10-14 23:15:54,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 23:15:54,163 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 28 [2020-10-14 23:15:54,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:15:54,164 INFO L225 Difference]: With dead ends: 50 [2020-10-14 23:15:54,164 INFO L226 Difference]: Without dead ends: 43 [2020-10-14 23:15:54,165 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 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 23:15:54,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-10-14 23:15:54,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 39. [2020-10-14 23:15:54,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-14 23:15:54,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 50 transitions. [2020-10-14 23:15:54,172 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 50 transitions. Word has length 28 [2020-10-14 23:15:54,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:15:54,173 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 50 transitions. [2020-10-14 23:15:54,173 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 23:15:54,173 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 50 transitions. [2020-10-14 23:15:54,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-14 23:15:54,174 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:15:54,175 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:15:54,175 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 23:15:54,175 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:15:54,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:15:54,176 INFO L82 PathProgramCache]: Analyzing trace with hash -39151527, now seen corresponding path program 5 times [2020-10-14 23:15:54,176 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:15:54,176 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [833060623] [2020-10-14 23:15:54,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:15:54,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:15:54,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:15:54,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:15:54,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:15:54,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:15:54,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:15:54,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:15:55,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:15:55,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-14 23:15:55,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 23:15:55,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1182 [2020-10-14 23:15:55,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:15:55,371 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:15:55,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 23:15:55,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:15:55,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 23:15:55,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:15:55,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:15:55,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:15:55,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:15:55,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:15:55,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:15:55,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:15:55,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 23:15:55,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:15:55,474 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:15:55,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:15:55,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:15:55,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:15:55,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:15:55,481 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:15:55,482 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [833060623] [2020-10-14 23:15:55,483 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:15:55,483 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 23:15:55,484 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006251374] [2020-10-14 23:15:55,484 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 23:15:55,485 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:15:55,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 23:15:55,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-14 23:15:55,486 INFO L87 Difference]: Start difference. First operand 39 states and 50 transitions. Second operand 9 states. [2020-10-14 23:15:55,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:15:55,576 INFO L93 Difference]: Finished difference Result 55 states and 71 transitions. [2020-10-14 23:15:55,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 23:15:55,577 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 32 [2020-10-14 23:15:55,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:15:55,578 INFO L225 Difference]: With dead ends: 55 [2020-10-14 23:15:55,578 INFO L226 Difference]: Without dead ends: 48 [2020-10-14 23:15:55,581 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 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 23:15:55,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-14 23:15:55,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 44. [2020-10-14 23:15:55,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-14 23:15:55,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 57 transitions. [2020-10-14 23:15:55,600 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 57 transitions. Word has length 32 [2020-10-14 23:15:55,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:15:55,601 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 57 transitions. [2020-10-14 23:15:55,601 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 23:15:55,601 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 57 transitions. [2020-10-14 23:15:55,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-14 23:15:55,605 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:15:55,605 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:15:55,606 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 23:15:55,606 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:15:55,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:15:55,606 INFO L82 PathProgramCache]: Analyzing trace with hash 359120453, now seen corresponding path program 6 times [2020-10-14 23:15:55,607 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:15:55,607 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1515625273] [2020-10-14 23:15:55,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:15:55,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:15:55,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:15:55,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:15:55,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:15:55,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:15:55,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:15:55,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:15:55,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:15:57,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:15:57,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-14 23:15:57,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 23:15:57,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1835 [2020-10-14 23:15:57,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:15:57,460 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:15:57,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:15:57,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:15:57,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 23:15:57,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:15:57,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:15:57,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:15:57,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:15:57,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:15:57,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:15:57,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:15:57,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 23:15:57,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:15:57,588 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:15:57,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:15:57,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:15:57,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:15:57,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:15:57,593 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:15:57,593 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1515625273] [2020-10-14 23:15:57,594 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:15:57,594 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 23:15:57,594 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083548514] [2020-10-14 23:15:57,595 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 23:15:57,595 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:15:57,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 23:15:57,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-14 23:15:57,596 INFO L87 Difference]: Start difference. First operand 44 states and 57 transitions. Second operand 10 states. [2020-10-14 23:15:57,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:15:57,674 INFO L93 Difference]: Finished difference Result 60 states and 78 transitions. [2020-10-14 23:15:57,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 23:15:57,675 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 36 [2020-10-14 23:15:57,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:15:57,676 INFO L225 Difference]: With dead ends: 60 [2020-10-14 23:15:57,676 INFO L226 Difference]: Without dead ends: 53 [2020-10-14 23:15:57,677 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 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 23:15:57,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-10-14 23:15:57,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 49. [2020-10-14 23:15:57,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-14 23:15:57,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 64 transitions. [2020-10-14 23:15:57,685 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 64 transitions. Word has length 36 [2020-10-14 23:15:57,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:15:57,685 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 64 transitions. [2020-10-14 23:15:57,685 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 23:15:57,685 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 64 transitions. [2020-10-14 23:15:57,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-14 23:15:57,687 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:15:57,687 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:15:57,687 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 23:15:57,688 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:15:57,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:15:57,688 INFO L82 PathProgramCache]: Analyzing trace with hash 487067185, now seen corresponding path program 7 times [2020-10-14 23:15:57,688 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:15:57,689 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1785259999] [2020-10-14 23:15:57,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:15:57,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:15:57,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:15:57,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:15:57,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:15:57,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:15:57,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:15:57,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:15:58,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:15:58,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:16:00,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:16:00,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-14 23:16:00,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 23:16:00,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2654 [2020-10-14 23:16:00,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:16:00,356 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:16:00,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 23:16:00,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:16:00,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 23:16:00,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:16:00,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:16:00,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:16:00,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:16:00,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:16:00,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:16:00,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:16:00,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 23:16:00,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:16:00,475 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:16:00,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:16:00,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:16:00,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:16:00,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:16:00,481 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:16:00,481 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1785259999] [2020-10-14 23:16:00,482 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:16:00,482 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 23:16:00,482 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873325702] [2020-10-14 23:16:00,483 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 23:16:00,483 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:16:00,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 23:16:00,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-14 23:16:00,484 INFO L87 Difference]: Start difference. First operand 49 states and 64 transitions. Second operand 11 states. [2020-10-14 23:16:00,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:16:00,571 INFO L93 Difference]: Finished difference Result 65 states and 85 transitions. [2020-10-14 23:16:00,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 23:16:00,572 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 40 [2020-10-14 23:16:00,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:16:00,573 INFO L225 Difference]: With dead ends: 65 [2020-10-14 23:16:00,573 INFO L226 Difference]: Without dead ends: 58 [2020-10-14 23:16:00,574 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 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 23:16:00,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-14 23:16:00,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 54. [2020-10-14 23:16:00,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-14 23:16:00,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 71 transitions. [2020-10-14 23:16:00,582 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 71 transitions. Word has length 40 [2020-10-14 23:16:00,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:16:00,582 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 71 transitions. [2020-10-14 23:16:00,582 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 23:16:00,582 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 71 transitions. [2020-10-14 23:16:00,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-14 23:16:00,584 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:16:00,584 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:16:00,584 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 23:16:00,585 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:16:00,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:16:00,585 INFO L82 PathProgramCache]: Analyzing trace with hash -1159296995, now seen corresponding path program 8 times [2020-10-14 23:16:00,585 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:16:00,586 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1320626553] [2020-10-14 23:16:00,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:16:00,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:16:00,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:16:00,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:16:00,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:16:00,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:16:00,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:16:00,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:16:00,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:16:01,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:16:02,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:16:05,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:16:05,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-14 23:16:05,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 23:16:05,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 23:16:05,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:16:05,600 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:16:05,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 23:16:05,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:16:05,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-14 23:16:05,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 23:16:05,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:16:05,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:16:05,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:16:05,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:16:05,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:16:05,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:16:05,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 23:16:05,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:16:05,747 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:16:05,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:16:05,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:16:05,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:16:05,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 23:16:05,757 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:16:05,759 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1320626553] [2020-10-14 23:16:05,759 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:16:05,759 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 23:16:05,760 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855773136] [2020-10-14 23:16:05,761 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 23:16:05,762 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:16:05,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 23:16:05,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-14 23:16:05,763 INFO L87 Difference]: Start difference. First operand 54 states and 71 transitions. Second operand 12 states. [2020-10-14 23:16:05,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:16:05,853 INFO L93 Difference]: Finished difference Result 70 states and 92 transitions. [2020-10-14 23:16:05,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 23:16:05,853 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 44 [2020-10-14 23:16:05,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:16:05,854 INFO L225 Difference]: With dead ends: 70 [2020-10-14 23:16:05,855 INFO L226 Difference]: Without dead ends: 63 [2020-10-14 23:16:05,855 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-14 23:16:05,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-10-14 23:16:05,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 59. [2020-10-14 23:16:05,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-14 23:16:05,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 78 transitions. [2020-10-14 23:16:05,872 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 78 transitions. Word has length 44 [2020-10-14 23:16:05,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:16:05,872 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 78 transitions. [2020-10-14 23:16:05,872 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 23:16:05,872 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 78 transitions. [2020-10-14 23:16:05,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-14 23:16:05,875 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:16:05,876 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:16:05,876 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 23:16:05,876 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:16:05,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:16:05,877 INFO L82 PathProgramCache]: Analyzing trace with hash -270652407, now seen corresponding path program 9 times [2020-10-14 23:16:05,877 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:16:05,877 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1334802828] [2020-10-14 23:16:05,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:16:05,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:16:05,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:16:05,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:16:05,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:16:05,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:16:05,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:16:05,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:16:06,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:16:06,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:16:07,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:16:09,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:16:10,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:16:10,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-14 23:16:10,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 23:16:10,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-14 23:16:10,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:16:10,908 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:16:10,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 23:16:10,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:16:10,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-14 23:16:10,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-14 23:16:11,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:16:11,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:16:11,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:16:11,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:16:11,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:16:11,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:16:11,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:16:11,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:16:11,075 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:16:11,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:16:11,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:16:11,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:16:11,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:16:11,080 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:16:11,081 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1334802828] [2020-10-14 23:16:11,081 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:16:11,081 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 23:16:11,082 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402262371] [2020-10-14 23:16:11,082 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 23:16:11,083 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:16:11,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 23:16:11,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-14 23:16:11,083 INFO L87 Difference]: Start difference. First operand 59 states and 78 transitions. Second operand 13 states. [2020-10-14 23:16:11,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:16:11,157 INFO L93 Difference]: Finished difference Result 75 states and 99 transitions. [2020-10-14 23:16:11,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 23:16:11,158 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 48 [2020-10-14 23:16:11,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:16:11,159 INFO L225 Difference]: With dead ends: 75 [2020-10-14 23:16:11,159 INFO L226 Difference]: Without dead ends: 68 [2020-10-14 23:16:11,160 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 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 23:16:11,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-14 23:16:11,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 64. [2020-10-14 23:16:11,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-10-14 23:16:11,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 85 transitions. [2020-10-14 23:16:11,166 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 85 transitions. Word has length 48 [2020-10-14 23:16:11,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:16:11,166 INFO L479 AbstractCegarLoop]: Abstraction has 64 states and 85 transitions. [2020-10-14 23:16:11,167 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 23:16:11,167 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 85 transitions. [2020-10-14 23:16:11,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-14 23:16:11,168 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:16:11,168 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:16:11,168 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 23:16:11,168 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:16:11,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:16:11,169 INFO L82 PathProgramCache]: Analyzing trace with hash -683017739, now seen corresponding path program 10 times [2020-10-14 23:16:11,169 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:16:11,169 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [94874062] [2020-10-14 23:16:11,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:16:11,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:16:11,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:16:11,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:16:11,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:16:11,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:16:11,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:16:11,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:16:11,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:16:11,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:16:11,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:16:13,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:16:16,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:16:16,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-14 23:16:16,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 23:16:16,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 23:16:16,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:16:16,179 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:16:16,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:16:16,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-14 23:16:16,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 23:16:16,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:16:16,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:16:16,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:16:16,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:16:16,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:16:16,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:16:16,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:16:16,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 23:16:16,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:16:16,230 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:16:16,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:16:16,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:16:16,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:16:16,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:16:16,244 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2020-10-14 23:16:16,245 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [94874062] [2020-10-14 23:16:16,245 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:16:16,245 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 23:16:16,246 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149614377] [2020-10-14 23:16:16,246 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 23:16:16,246 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:16:16,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 23:16:16,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 23:16:16,247 INFO L87 Difference]: Start difference. First operand 64 states and 85 transitions. Second operand 4 states. [2020-10-14 23:16:16,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:16:16,298 INFO L93 Difference]: Finished difference Result 127 states and 167 transitions. [2020-10-14 23:16:16,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 23:16:16,298 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 52 [2020-10-14 23:16:16,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:16:16,299 INFO L225 Difference]: With dead ends: 127 [2020-10-14 23:16:16,299 INFO L226 Difference]: Without dead ends: 54 [2020-10-14 23:16:16,301 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 23:16:16,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-14 23:16:16,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-10-14 23:16:16,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-14 23:16:16,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 55 transitions. [2020-10-14 23:16:16,310 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 55 transitions. Word has length 52 [2020-10-14 23:16:16,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:16:16,311 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 55 transitions. [2020-10-14 23:16:16,314 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 23:16:16,314 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 55 transitions. [2020-10-14 23:16:16,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-14 23:16:16,315 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:16:16,315 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:16:16,315 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 23:16:16,316 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:16:16,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:16:16,318 INFO L82 PathProgramCache]: Analyzing trace with hash -494532733, now seen corresponding path program 1 times [2020-10-14 23:16:16,318 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:16:16,318 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2076129160] [2020-10-14 23:16:16,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:16:16,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:16:16,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:16:16,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:16:16,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-14 23:16:16,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:16:16,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 192 [2020-10-14 23:16:16,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:16:16,532 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:16:16,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 23:16:16,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:16:16,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-14 23:16:16,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:16:16,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:16:16,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:16:16,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:16:16,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:16:16,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:16:16,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:16:16,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:16:16,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:16:16,704 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:16:16,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:16:16,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:16:16,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:16:16,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:16:16,711 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:16:16,712 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2076129160] [2020-10-14 23:16:16,712 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:16:16,712 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 23:16:16,713 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176533275] [2020-10-14 23:16:16,713 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 23:16:16,713 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:16:16,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 23:16:16,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-14 23:16:16,715 INFO L87 Difference]: Start difference. First operand 54 states and 55 transitions. Second operand 14 states. [2020-10-14 23:16:16,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:16:16,797 INFO L93 Difference]: Finished difference Result 68 states and 70 transitions. [2020-10-14 23:16:16,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 23:16:16,798 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 52 [2020-10-14 23:16:16,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:16:16,799 INFO L225 Difference]: With dead ends: 68 [2020-10-14 23:16:16,799 INFO L226 Difference]: Without dead ends: 61 [2020-10-14 23:16:16,800 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 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 23:16:16,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-10-14 23:16:16,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 58. [2020-10-14 23:16:16,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-10-14 23:16:16,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 59 transitions. [2020-10-14 23:16:16,806 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 59 transitions. Word has length 52 [2020-10-14 23:16:16,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:16:16,806 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 59 transitions. [2020-10-14 23:16:16,806 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 23:16:16,807 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 59 transitions. [2020-10-14 23:16:16,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-14 23:16:16,807 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:16:16,807 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:16:16,808 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 23:16:16,808 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:16:16,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:16:16,808 INFO L82 PathProgramCache]: Analyzing trace with hash 1889198730, now seen corresponding path program 2 times [2020-10-14 23:16:16,809 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:16:16,809 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1863592974] [2020-10-14 23:16:16,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:16:16,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:16:16,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:16:17,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:16:17,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-14 23:16:17,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:16:17,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 221 [2020-10-14 23:16:17,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:16:17,047 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:16:17,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 23:16:17,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:16:17,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-14 23:16:17,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:16:17,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:16:17,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:16:17,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:16:17,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:16:17,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:16:17,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:16:17,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 23:16:17,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:16:17,248 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:16:17,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:16:17,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:16:17,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:16:17,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 23:16:17,286 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:16:17,287 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1863592974] [2020-10-14 23:16:17,288 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:16:17,288 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 23:16:17,288 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107411964] [2020-10-14 23:16:17,289 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 23:16:17,290 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:16:17,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 23:16:17,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-14 23:16:17,291 INFO L87 Difference]: Start difference. First operand 58 states and 59 transitions. Second operand 15 states. [2020-10-14 23:16:17,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:16:17,402 INFO L93 Difference]: Finished difference Result 72 states and 74 transitions. [2020-10-14 23:16:17,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 23:16:17,403 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 56 [2020-10-14 23:16:17,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:16:17,404 INFO L225 Difference]: With dead ends: 72 [2020-10-14 23:16:17,404 INFO L226 Difference]: Without dead ends: 65 [2020-10-14 23:16:17,405 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 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 23:16:17,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-10-14 23:16:17,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 62. [2020-10-14 23:16:17,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-10-14 23:16:17,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 63 transitions. [2020-10-14 23:16:17,412 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 63 transitions. Word has length 56 [2020-10-14 23:16:17,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:16:17,413 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 63 transitions. [2020-10-14 23:16:17,413 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 23:16:17,413 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 63 transitions. [2020-10-14 23:16:17,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-14 23:16:17,414 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:16:17,415 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:16:17,415 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 23:16:17,415 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:16:17,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:16:17,416 INFO L82 PathProgramCache]: Analyzing trace with hash -483597807, now seen corresponding path program 3 times [2020-10-14 23:16:17,416 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:16:17,417 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1558375725] [2020-10-14 23:16:17,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:16:17,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:16:17,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:16:17,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:16:17,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-14 23:16:17,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:16:17,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 348 [2020-10-14 23:16:17,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:16:17,788 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:16:17,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 23:16:17,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:16:17,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-14 23:16:17,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:16:18,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:16:18,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:16:18,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:16:18,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:16:18,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:16:18,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:16:18,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 23:16:18,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:16:18,026 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:16:18,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:16:18,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:16:18,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:16:18,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:16:18,038 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:16:18,039 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1558375725] [2020-10-14 23:16:18,039 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:16:18,039 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 23:16:18,040 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537325722] [2020-10-14 23:16:18,040 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 23:16:18,040 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:16:18,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 23:16:18,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-14 23:16:18,042 INFO L87 Difference]: Start difference. First operand 62 states and 63 transitions. Second operand 16 states. [2020-10-14 23:16:18,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:16:18,158 INFO L93 Difference]: Finished difference Result 76 states and 78 transitions. [2020-10-14 23:16:18,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 23:16:18,159 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 60 [2020-10-14 23:16:18,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:16:18,160 INFO L225 Difference]: With dead ends: 76 [2020-10-14 23:16:18,161 INFO L226 Difference]: Without dead ends: 69 [2020-10-14 23:16:18,162 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 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 23:16:18,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-10-14 23:16:18,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 66. [2020-10-14 23:16:18,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-14 23:16:18,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 67 transitions. [2020-10-14 23:16:18,167 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 67 transitions. Word has length 60 [2020-10-14 23:16:18,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:16:18,167 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 67 transitions. [2020-10-14 23:16:18,167 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 23:16:18,167 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 67 transitions. [2020-10-14 23:16:18,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-14 23:16:18,168 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:16:18,168 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:16:18,168 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 23:16:18,169 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:16:18,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:16:18,169 INFO L82 PathProgramCache]: Analyzing trace with hash -1240087016, now seen corresponding path program 4 times [2020-10-14 23:16:18,169 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:16:18,169 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1436464365] [2020-10-14 23:16:18,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:16:18,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:16:18,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:16:18,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:16:18,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 23:16:18,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:16:18,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 398 [2020-10-14 23:16:18,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:16:18,594 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:16:18,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 23:16:18,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:16:18,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-14 23:16:18,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:16:18,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:16:18,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:16:18,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:16:18,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:16:18,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:16:18,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:16:18,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:16:18,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:16:18,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:16:18,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:16:18,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:16:18,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:16:18,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:16:18,804 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:16:18,804 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1436464365] [2020-10-14 23:16:18,805 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:16:18,805 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 23:16:18,805 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080621955] [2020-10-14 23:16:18,806 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 23:16:18,806 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:16:18,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 23:16:18,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-14 23:16:18,807 INFO L87 Difference]: Start difference. First operand 66 states and 67 transitions. Second operand 17 states. [2020-10-14 23:16:18,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:16:18,900 INFO L93 Difference]: Finished difference Result 80 states and 82 transitions. [2020-10-14 23:16:18,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 23:16:18,901 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 64 [2020-10-14 23:16:18,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:16:18,902 INFO L225 Difference]: With dead ends: 80 [2020-10-14 23:16:18,902 INFO L226 Difference]: Without dead ends: 73 [2020-10-14 23:16:18,903 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-14 23:16:18,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-10-14 23:16:18,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 70. [2020-10-14 23:16:18,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-10-14 23:16:18,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 71 transitions. [2020-10-14 23:16:18,908 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 71 transitions. Word has length 64 [2020-10-14 23:16:18,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:16:18,909 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 71 transitions. [2020-10-14 23:16:18,909 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 23:16:18,909 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 71 transitions. [2020-10-14 23:16:18,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-14 23:16:18,910 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:16:18,910 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:16:18,910 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 23:16:18,911 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:16:18,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:16:18,911 INFO L82 PathProgramCache]: Analyzing trace with hash 1649364639, now seen corresponding path program 5 times [2020-10-14 23:16:18,911 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:16:18,912 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [412733768] [2020-10-14 23:16:18,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:16:18,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:16:18,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:16:19,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:16:19,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 23:16:19,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:16:19,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 328 [2020-10-14 23:16:19,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:16:19,260 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:16:19,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 23:16:19,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:16:19,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-14 23:16:19,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:16:19,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:16:19,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:16:19,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:16:19,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:16:19,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:16:19,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:16:19,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 23:16:19,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:16:19,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:16:19,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:16:19,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:16:19,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:16:19,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:16:19,550 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:16:19,551 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [412733768] [2020-10-14 23:16:19,552 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:16:19,552 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-14 23:16:19,552 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880898225] [2020-10-14 23:16:19,553 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-14 23:16:19,553 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:16:19,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-14 23:16:19,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-14 23:16:19,554 INFO L87 Difference]: Start difference. First operand 70 states and 71 transitions. Second operand 18 states. [2020-10-14 23:16:19,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:16:19,693 INFO L93 Difference]: Finished difference Result 84 states and 86 transitions. [2020-10-14 23:16:19,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 23:16:19,694 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 68 [2020-10-14 23:16:19,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:16:19,696 INFO L225 Difference]: With dead ends: 84 [2020-10-14 23:16:19,696 INFO L226 Difference]: Without dead ends: 77 [2020-10-14 23:16:19,697 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-14 23:16:19,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-10-14 23:16:19,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 74. [2020-10-14 23:16:19,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-10-14 23:16:19,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 75 transitions. [2020-10-14 23:16:19,703 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 75 transitions. Word has length 68 [2020-10-14 23:16:19,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:16:19,703 INFO L479 AbstractCegarLoop]: Abstraction has 74 states and 75 transitions. [2020-10-14 23:16:19,704 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-14 23:16:19,704 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 75 transitions. [2020-10-14 23:16:19,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-14 23:16:19,705 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:16:19,705 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:16:19,706 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 23:16:19,706 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:16:19,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:16:19,706 INFO L82 PathProgramCache]: Analyzing trace with hash -839697498, now seen corresponding path program 6 times [2020-10-14 23:16:19,707 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:16:19,707 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1682813396] [2020-10-14 23:16:19,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:16:19,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:16:19,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:16:20,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:16:20,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-14 23:16:20,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:16:20,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 530 [2020-10-14 23:16:20,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:16:20,267 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:16:20,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 23:16:20,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:16:20,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-14 23:16:20,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:16:20,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:16:20,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:16:20,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:16:20,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:16:20,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:16:20,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:16:20,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 23:16:20,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:16:20,608 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:16:20,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:16:20,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:16:20,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:16:20,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:16:20,624 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:16:20,624 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1682813396] [2020-10-14 23:16:20,625 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:16:20,625 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-14 23:16:20,625 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881106135] [2020-10-14 23:16:20,626 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-14 23:16:20,626 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:16:20,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-14 23:16:20,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-14 23:16:20,627 INFO L87 Difference]: Start difference. First operand 74 states and 75 transitions. Second operand 19 states. [2020-10-14 23:16:20,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:16:20,774 INFO L93 Difference]: Finished difference Result 88 states and 90 transitions. [2020-10-14 23:16:20,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 23:16:20,775 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 72 [2020-10-14 23:16:20,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:16:20,777 INFO L225 Difference]: With dead ends: 88 [2020-10-14 23:16:20,777 INFO L226 Difference]: Without dead ends: 81 [2020-10-14 23:16:20,778 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-14 23:16:20,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-10-14 23:16:20,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 78. [2020-10-14 23:16:20,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-10-14 23:16:20,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 79 transitions. [2020-10-14 23:16:20,783 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 79 transitions. Word has length 72 [2020-10-14 23:16:20,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:16:20,784 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 79 transitions. [2020-10-14 23:16:20,784 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-14 23:16:20,784 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 79 transitions. [2020-10-14 23:16:20,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-14 23:16:20,785 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:16:20,786 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:16:20,786 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 23:16:20,786 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:16:20,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:16:20,787 INFO L82 PathProgramCache]: Analyzing trace with hash -1136964307, now seen corresponding path program 7 times [2020-10-14 23:16:20,788 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:16:20,788 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [653368079] [2020-10-14 23:16:20,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:16:20,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:16:20,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:16:21,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:16:21,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-14 23:16:21,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:16:21,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 698 [2020-10-14 23:16:21,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:16:21,517 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:16:21,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-14 23:16:21,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:16:21,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-14 23:16:21,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:16:21,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:16:21,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:16:21,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:16:21,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:16:21,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:16:21,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:16:21,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 23:16:21,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:16:21,888 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:16:21,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:16:21,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:16:21,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:16:21,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:16:21,903 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 0 proven. 496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:16:21,903 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [653368079] [2020-10-14 23:16:21,904 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:16:21,904 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-14 23:16:21,904 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932401815] [2020-10-14 23:16:21,906 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-14 23:16:21,906 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:16:21,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-14 23:16:21,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-14 23:16:21,908 INFO L87 Difference]: Start difference. First operand 78 states and 79 transitions. Second operand 20 states. [2020-10-14 23:16:22,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:16:22,038 INFO L93 Difference]: Finished difference Result 92 states and 94 transitions. [2020-10-14 23:16:22,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-14 23:16:22,039 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 76 [2020-10-14 23:16:22,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:16:22,040 INFO L225 Difference]: With dead ends: 92 [2020-10-14 23:16:22,040 INFO L226 Difference]: Without dead ends: 85 [2020-10-14 23:16:22,041 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-14 23:16:22,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-10-14 23:16:22,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 82. [2020-10-14 23:16:22,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-10-14 23:16:22,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 83 transitions. [2020-10-14 23:16:22,045 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 83 transitions. Word has length 76 [2020-10-14 23:16:22,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:16:22,046 INFO L479 AbstractCegarLoop]: Abstraction has 82 states and 83 transitions. [2020-10-14 23:16:22,046 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-14 23:16:22,046 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 83 transitions. [2020-10-14 23:16:22,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-14 23:16:22,047 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:16:22,047 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:16:22,048 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 23:16:22,048 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:16:22,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:16:22,048 INFO L82 PathProgramCache]: Analyzing trace with hash 1031881524, now seen corresponding path program 8 times [2020-10-14 23:16:22,049 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:16:22,049 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [723820491] [2020-10-14 23:16:22,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:16:22,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:16:22,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:16:22,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:16:22,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-14 23:16:22,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:16:22,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 611 [2020-10-14 23:16:22,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:16:22,692 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:16:22,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-14 23:16:22,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:16:22,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 23:16:22,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:16:22,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:16:22,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:16:22,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:16:22,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:16:22,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:16:22,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:16:22,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 23:16:22,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:16:22,973 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:16:22,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:16:22,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:16:22,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:16:22,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:16:22,983 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:16:22,983 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [723820491] [2020-10-14 23:16:22,984 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:16:22,984 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-14 23:16:22,984 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423748942] [2020-10-14 23:16:22,985 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-14 23:16:22,985 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:16:22,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-14 23:16:22,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-14 23:16:22,986 INFO L87 Difference]: Start difference. First operand 82 states and 83 transitions. Second operand 21 states. [2020-10-14 23:16:23,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:16:23,084 INFO L93 Difference]: Finished difference Result 96 states and 98 transitions. [2020-10-14 23:16:23,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-14 23:16:23,084 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 80 [2020-10-14 23:16:23,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:16:23,085 INFO L225 Difference]: With dead ends: 96 [2020-10-14 23:16:23,086 INFO L226 Difference]: Without dead ends: 89 [2020-10-14 23:16:23,087 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-14 23:16:23,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-10-14 23:16:23,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 86. [2020-10-14 23:16:23,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-10-14 23:16:23,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 87 transitions. [2020-10-14 23:16:23,092 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 87 transitions. Word has length 80 [2020-10-14 23:16:23,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:16:23,092 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 87 transitions. [2020-10-14 23:16:23,093 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-14 23:16:23,093 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 87 transitions. [2020-10-14 23:16:23,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-14 23:16:23,093 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:16:23,094 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:16:23,094 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-14 23:16:23,094 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:16:23,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:16:23,095 INFO L82 PathProgramCache]: Analyzing trace with hash 524213691, now seen corresponding path program 9 times [2020-10-14 23:16:23,095 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:16:23,095 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1208636476] [2020-10-14 23:16:23,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:16:23,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:16:23,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:16:23,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:16:23,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-14 23:16:23,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:16:23,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 616 [2020-10-14 23:16:23,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:16:23,750 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:16:23,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-14 23:16:23,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:16:23,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 23:16:23,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:16:24,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:16:24,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:16:24,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:16:24,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:16:24,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:16:24,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:16:24,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:16:24,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:16:24,134 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:16:24,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:16:24,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:16:24,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:16:24,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:16:24,160 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:16:24,161 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1208636476] [2020-10-14 23:16:24,161 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:16:24,161 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-14 23:16:24,162 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373854675] [2020-10-14 23:16:24,164 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-14 23:16:24,164 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:16:24,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-14 23:16:24,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-14 23:16:24,166 INFO L87 Difference]: Start difference. First operand 86 states and 87 transitions. Second operand 22 states. [2020-10-14 23:16:24,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:16:24,278 INFO L93 Difference]: Finished difference Result 100 states and 102 transitions. [2020-10-14 23:16:24,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-14 23:16:24,279 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 84 [2020-10-14 23:16:24,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:16:24,280 INFO L225 Difference]: With dead ends: 100 [2020-10-14 23:16:24,280 INFO L226 Difference]: Without dead ends: 93 [2020-10-14 23:16:24,281 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-14 23:16:24,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-10-14 23:16:24,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 90. [2020-10-14 23:16:24,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-10-14 23:16:24,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 91 transitions. [2020-10-14 23:16:24,288 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 91 transitions. Word has length 84 [2020-10-14 23:16:24,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:16:24,288 INFO L479 AbstractCegarLoop]: Abstraction has 90 states and 91 transitions. [2020-10-14 23:16:24,288 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-14 23:16:24,289 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 91 transitions. [2020-10-14 23:16:24,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-14 23:16:24,290 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:16:24,290 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:16:24,290 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-14 23:16:24,290 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:16:24,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:16:24,291 INFO L82 PathProgramCache]: Analyzing trace with hash 1544412354, now seen corresponding path program 10 times [2020-10-14 23:16:24,291 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:16:24,293 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1296551629] [2020-10-14 23:16:24,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:16:24,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:16:24,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:16:24,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:16:24,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-14 23:16:24,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:16:24,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 484 [2020-10-14 23:16:24,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:16:24,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:16:24,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-14 23:16:24,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:16:24,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-14 23:16:24,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:16:25,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:16:25,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:16:25,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:16:25,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:16:25,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:16:25,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:16:25,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 23:16:25,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:16:25,133 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:16:25,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:16:25,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:16:25,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:16:25,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:16:25,145 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 0 proven. 703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:16:25,146 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1296551629] [2020-10-14 23:16:25,146 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:16:25,146 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-14 23:16:25,146 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158237712] [2020-10-14 23:16:25,147 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-14 23:16:25,147 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:16:25,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-14 23:16:25,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-14 23:16:25,148 INFO L87 Difference]: Start difference. First operand 90 states and 91 transitions. Second operand 23 states. [2020-10-14 23:16:25,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:16:25,264 INFO L93 Difference]: Finished difference Result 104 states and 106 transitions. [2020-10-14 23:16:25,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-14 23:16:25,267 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 88 [2020-10-14 23:16:25,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:16:25,268 INFO L225 Difference]: With dead ends: 104 [2020-10-14 23:16:25,268 INFO L226 Difference]: Without dead ends: 97 [2020-10-14 23:16:25,271 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-14 23:16:25,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-10-14 23:16:25,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 94. [2020-10-14 23:16:25,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-10-14 23:16:25,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 95 transitions. [2020-10-14 23:16:25,275 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 95 transitions. Word has length 88 [2020-10-14 23:16:25,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:16:25,276 INFO L479 AbstractCegarLoop]: Abstraction has 94 states and 95 transitions. [2020-10-14 23:16:25,276 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-14 23:16:25,276 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 95 transitions. [2020-10-14 23:16:25,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-14 23:16:25,280 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:16:25,280 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:16:25,280 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-14 23:16:25,280 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:16:25,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:16:25,281 INFO L82 PathProgramCache]: Analyzing trace with hash -1951924151, now seen corresponding path program 11 times [2020-10-14 23:16:25,281 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:16:25,284 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1118450448] [2020-10-14 23:16:25,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:16:25,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:16:25,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:16:25,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:16:25,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-14 23:16:25,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:16:25,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 554 [2020-10-14 23:16:25,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:16:25,872 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:16:25,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-14 23:16:25,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:16:25,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 23:16:25,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:16:26,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:16:26,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:16:26,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:16:26,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:16:26,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:16:26,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:16:26,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 23:16:26,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:16:26,300 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:16:26,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:16:26,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:16:26,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:16:26,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:16:26,321 INFO L134 CoverageAnalysis]: Checked inductivity of 780 backedges. 0 proven. 780 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:16:26,323 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1118450448] [2020-10-14 23:16:26,324 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:16:26,324 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-14 23:16:26,325 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752945941] [2020-10-14 23:16:26,325 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-14 23:16:26,326 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:16:26,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-14 23:16:26,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2020-10-14 23:16:26,329 INFO L87 Difference]: Start difference. First operand 94 states and 95 transitions. Second operand 24 states. [2020-10-14 23:16:26,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:16:26,439 INFO L93 Difference]: Finished difference Result 108 states and 110 transitions. [2020-10-14 23:16:26,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-14 23:16:26,440 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 92 [2020-10-14 23:16:26,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:16:26,441 INFO L225 Difference]: With dead ends: 108 [2020-10-14 23:16:26,441 INFO L226 Difference]: Without dead ends: 101 [2020-10-14 23:16:26,442 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2020-10-14 23:16:26,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-10-14 23:16:26,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 98. [2020-10-14 23:16:26,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-10-14 23:16:26,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 99 transitions. [2020-10-14 23:16:26,448 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 99 transitions. Word has length 92 [2020-10-14 23:16:26,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:16:26,448 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 99 transitions. [2020-10-14 23:16:26,448 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-14 23:16:26,448 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 99 transitions. [2020-10-14 23:16:26,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-14 23:16:26,449 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:16:26,450 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:16:26,450 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-14 23:16:26,450 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:16:26,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:16:26,451 INFO L82 PathProgramCache]: Analyzing trace with hash 1390872656, now seen corresponding path program 12 times [2020-10-14 23:16:26,451 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:16:26,451 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1809378354] [2020-10-14 23:16:26,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:16:26,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:16:26,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:16:27,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:16:27,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-14 23:16:27,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:16:27,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 611 [2020-10-14 23:16:27,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:16:27,087 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:16:27,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-14 23:16:27,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:16:27,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-14 23:16:27,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:16:27,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:16:27,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:16:27,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:16:27,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:16:27,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:16:27,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:16:27,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:16:27,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:16:27,472 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:16:27,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:16:27,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:16:27,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:16:27,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:16:27,488 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 0 proven. 861 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:16:27,488 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1809378354] [2020-10-14 23:16:27,488 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:16:27,489 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-14 23:16:27,489 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208657798] [2020-10-14 23:16:27,489 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-14 23:16:27,489 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:16:27,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-14 23:16:27,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2020-10-14 23:16:27,490 INFO L87 Difference]: Start difference. First operand 98 states and 99 transitions. Second operand 25 states. [2020-10-14 23:16:27,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:16:27,590 INFO L93 Difference]: Finished difference Result 112 states and 114 transitions. [2020-10-14 23:16:27,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-14 23:16:27,591 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 96 [2020-10-14 23:16:27,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:16:27,592 INFO L225 Difference]: With dead ends: 112 [2020-10-14 23:16:27,592 INFO L226 Difference]: Without dead ends: 105 [2020-10-14 23:16:27,592 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2020-10-14 23:16:27,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-10-14 23:16:27,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 102. [2020-10-14 23:16:27,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-10-14 23:16:27,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 103 transitions. [2020-10-14 23:16:27,597 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 103 transitions. Word has length 96 [2020-10-14 23:16:27,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:16:27,597 INFO L479 AbstractCegarLoop]: Abstraction has 102 states and 103 transitions. [2020-10-14 23:16:27,597 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-14 23:16:27,597 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 103 transitions. [2020-10-14 23:16:27,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-14 23:16:27,598 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:16:27,598 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:16:27,600 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-14 23:16:27,601 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:16:27,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:16:27,601 INFO L82 PathProgramCache]: Analyzing trace with hash -742083369, now seen corresponding path program 13 times [2020-10-14 23:16:27,602 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:16:27,602 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [527702559] [2020-10-14 23:16:27,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:16:27,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:16:27,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:16:28,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:16:28,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-14 23:16:28,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:16:28,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 636 [2020-10-14 23:16:28,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:16:28,260 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:16:28,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-14 23:16:28,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:16:28,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-14 23:16:28,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:16:28,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:16:28,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:16:28,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:16:28,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:16:28,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:16:28,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:16:28,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:16:28,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:16:28,655 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:16:28,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:16:28,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:16:28,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:16:28,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:16:28,668 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:16:28,669 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [527702559] [2020-10-14 23:16:28,669 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:16:28,669 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-14 23:16:28,669 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095502990] [2020-10-14 23:16:28,670 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-14 23:16:28,670 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:16:28,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-14 23:16:28,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2020-10-14 23:16:28,671 INFO L87 Difference]: Start difference. First operand 102 states and 103 transitions. Second operand 26 states. [2020-10-14 23:16:28,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:16:28,773 INFO L93 Difference]: Finished difference Result 116 states and 118 transitions. [2020-10-14 23:16:28,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-14 23:16:28,773 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 100 [2020-10-14 23:16:28,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:16:28,774 INFO L225 Difference]: With dead ends: 116 [2020-10-14 23:16:28,774 INFO L226 Difference]: Without dead ends: 109 [2020-10-14 23:16:28,775 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2020-10-14 23:16:28,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-10-14 23:16:28,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 106. [2020-10-14 23:16:28,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-10-14 23:16:28,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 107 transitions. [2020-10-14 23:16:28,779 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 107 transitions. Word has length 100 [2020-10-14 23:16:28,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:16:28,780 INFO L479 AbstractCegarLoop]: Abstraction has 106 states and 107 transitions. [2020-10-14 23:16:28,780 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-14 23:16:28,780 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 107 transitions. [2020-10-14 23:16:28,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-14 23:16:28,781 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:16:28,781 INFO L422 BasicCegarLoop]: trace histogram [23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:16:28,781 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-14 23:16:28,781 INFO L427 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:16:28,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:16:28,782 INFO L82 PathProgramCache]: Analyzing trace with hash 492488158, now seen corresponding path program 14 times [2020-10-14 23:16:28,782 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:16:28,782 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [759050020] [2020-10-14 23:16:28,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:16:28,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:16:28,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:16:29,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:16:29,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-14 23:16:29,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:16:29,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 510 [2020-10-14 23:16:29,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:16:29,316 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:16:29,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-14 23:16:29,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:16:29,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-14 23:16:29,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:16:29,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:16:29,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:16:29,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:16:29,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:16:29,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:16:29,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:16:29,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:16:29,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:16:29,739 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:16:29,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:16:29,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:16:29,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:16:29,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:16:29,752 INFO L134 CoverageAnalysis]: Checked inductivity of 1035 backedges. 0 proven. 1035 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:16:29,753 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [759050020] [2020-10-14 23:16:29,753 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:16:29,753 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-14 23:16:29,753 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481185011] [2020-10-14 23:16:29,754 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-14 23:16:29,754 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:16:29,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-14 23:16:29,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2020-10-14 23:16:29,755 INFO L87 Difference]: Start difference. First operand 106 states and 107 transitions. Second operand 27 states. [2020-10-14 23:16:29,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:16:29,893 INFO L93 Difference]: Finished difference Result 120 states and 122 transitions. [2020-10-14 23:16:29,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-14 23:16:29,893 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 104 [2020-10-14 23:16:29,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:16:29,894 INFO L225 Difference]: With dead ends: 120 [2020-10-14 23:16:29,895 INFO L226 Difference]: Without dead ends: 113 [2020-10-14 23:16:29,896 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2020-10-14 23:16:29,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-10-14 23:16:29,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 110. [2020-10-14 23:16:29,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-10-14 23:16:29,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 111 transitions. [2020-10-14 23:16:29,900 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 111 transitions. Word has length 104 [2020-10-14 23:16:29,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:16:29,900 INFO L479 AbstractCegarLoop]: Abstraction has 110 states and 111 transitions. [2020-10-14 23:16:29,900 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-14 23:16:29,900 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 111 transitions. [2020-10-14 23:16:29,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-14 23:16:29,901 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:16:29,901 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:16:29,902 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-14 23:16:29,902 INFO L427 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:16:29,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:16:29,902 INFO L82 PathProgramCache]: Analyzing trace with hash -1679623323, now seen corresponding path program 15 times [2020-10-14 23:16:29,902 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:16:29,903 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [128303539] [2020-10-14 23:16:29,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:16:29,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:16:29,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:16:30,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:16:30,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-14 23:16:30,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:16:30,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 524 [2020-10-14 23:16:30,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:16:30,451 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:16:30,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-14 23:16:30,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:16:30,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-14 23:16:30,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:16:30,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:16:30,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:16:30,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:16:30,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:16:30,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:16:30,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:16:30,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:16:30,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:16:30,884 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:16:30,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:16:30,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:16:30,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:16:30,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:16:30,895 INFO L134 CoverageAnalysis]: Checked inductivity of 1128 backedges. 0 proven. 1128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:16:30,896 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [128303539] [2020-10-14 23:16:30,896 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:16:30,896 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-14 23:16:30,896 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794980945] [2020-10-14 23:16:30,896 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-14 23:16:30,897 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:16:30,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-14 23:16:30,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2020-10-14 23:16:30,897 INFO L87 Difference]: Start difference. First operand 110 states and 111 transitions. Second operand 28 states. [2020-10-14 23:16:31,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:16:31,031 INFO L93 Difference]: Finished difference Result 124 states and 126 transitions. [2020-10-14 23:16:31,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-14 23:16:31,032 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 108 [2020-10-14 23:16:31,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:16:31,033 INFO L225 Difference]: With dead ends: 124 [2020-10-14 23:16:31,033 INFO L226 Difference]: Without dead ends: 117 [2020-10-14 23:16:31,034 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2020-10-14 23:16:31,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-10-14 23:16:31,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 114. [2020-10-14 23:16:31,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-10-14 23:16:31,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 115 transitions. [2020-10-14 23:16:31,038 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 115 transitions. Word has length 108 [2020-10-14 23:16:31,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:16:31,039 INFO L479 AbstractCegarLoop]: Abstraction has 114 states and 115 transitions. [2020-10-14 23:16:31,039 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-14 23:16:31,039 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 115 transitions. [2020-10-14 23:16:31,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-14 23:16:31,040 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:16:31,040 INFO L422 BasicCegarLoop]: trace histogram [25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:16:31,040 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-14 23:16:31,040 INFO L427 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:16:31,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:16:31,041 INFO L82 PathProgramCache]: Analyzing trace with hash -2001267348, now seen corresponding path program 16 times [2020-10-14 23:16:31,041 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:16:31,041 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1823760980] [2020-10-14 23:16:31,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:16:31,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:16:31,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:16:31,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:16:31,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-14 23:16:31,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:16:31,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 554 [2020-10-14 23:16:31,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:16:31,619 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:16:31,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-14 23:16:31,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:16:31,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-14 23:16:31,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:16:32,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:16:32,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:16:32,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:16:32,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:16:32,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:16:32,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:16:32,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:16:32,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:16:32,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:16:32,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:16:32,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:16:32,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:16:32,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:16:32,091 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 0 proven. 1225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:16:32,092 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1823760980] [2020-10-14 23:16:32,092 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:16:32,092 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-14 23:16:32,092 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241376884] [2020-10-14 23:16:32,093 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-14 23:16:32,093 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:16:32,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-14 23:16:32,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2020-10-14 23:16:32,094 INFO L87 Difference]: Start difference. First operand 114 states and 115 transitions. Second operand 29 states. [2020-10-14 23:16:32,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:16:32,233 INFO L93 Difference]: Finished difference Result 128 states and 130 transitions. [2020-10-14 23:16:32,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-14 23:16:32,233 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 112 [2020-10-14 23:16:32,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:16:32,235 INFO L225 Difference]: With dead ends: 128 [2020-10-14 23:16:32,235 INFO L226 Difference]: Without dead ends: 121 [2020-10-14 23:16:32,236 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2020-10-14 23:16:32,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-10-14 23:16:32,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 118. [2020-10-14 23:16:32,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-10-14 23:16:32,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 119 transitions. [2020-10-14 23:16:32,241 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 119 transitions. Word has length 112 [2020-10-14 23:16:32,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:16:32,241 INFO L479 AbstractCegarLoop]: Abstraction has 118 states and 119 transitions. [2020-10-14 23:16:32,241 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-14 23:16:32,242 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 119 transitions. [2020-10-14 23:16:32,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-14 23:16:32,243 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:16:32,243 INFO L422 BasicCegarLoop]: trace histogram [26, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:16:32,243 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-14 23:16:32,243 INFO L427 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:16:32,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:16:32,244 INFO L82 PathProgramCache]: Analyzing trace with hash 1515246579, now seen corresponding path program 17 times [2020-10-14 23:16:32,244 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:16:32,244 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1014501465] [2020-10-14 23:16:32,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:16:32,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:16:32,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:16:32,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:16:32,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-14 23:16:32,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:16:32,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 559 [2020-10-14 23:16:32,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:16:32,855 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:16:32,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-14 23:16:32,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:16:32,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-14 23:16:32,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:16:33,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:16:33,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:16:33,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:16:33,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:16:33,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:16:33,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:16:33,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:16:33,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:16:33,328 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:16:33,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:16:33,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:16:33,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:16:33,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:16:33,340 INFO L134 CoverageAnalysis]: Checked inductivity of 1326 backedges. 0 proven. 1326 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:16:33,341 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1014501465] [2020-10-14 23:16:33,341 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:16:33,341 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-14 23:16:33,341 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519828236] [2020-10-14 23:16:33,342 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-14 23:16:33,342 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:16:33,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-14 23:16:33,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2020-10-14 23:16:33,342 INFO L87 Difference]: Start difference. First operand 118 states and 119 transitions. Second operand 30 states. [2020-10-14 23:16:33,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:16:33,500 INFO L93 Difference]: Finished difference Result 132 states and 134 transitions. [2020-10-14 23:16:33,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-14 23:16:33,500 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 116 [2020-10-14 23:16:33,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:16:33,501 INFO L225 Difference]: With dead ends: 132 [2020-10-14 23:16:33,502 INFO L226 Difference]: Without dead ends: 125 [2020-10-14 23:16:33,502 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2020-10-14 23:16:33,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-10-14 23:16:33,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 122. [2020-10-14 23:16:33,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-10-14 23:16:33,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 123 transitions. [2020-10-14 23:16:33,511 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 123 transitions. Word has length 116 [2020-10-14 23:16:33,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:16:33,512 INFO L479 AbstractCegarLoop]: Abstraction has 122 states and 123 transitions. [2020-10-14 23:16:33,512 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-14 23:16:33,513 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 123 transitions. [2020-10-14 23:16:33,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-14 23:16:33,514 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:16:33,514 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:16:33,514 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-14 23:16:33,515 INFO L427 AbstractCegarLoop]: === Iteration 30 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:16:33,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:16:33,515 INFO L82 PathProgramCache]: Analyzing trace with hash 877262586, now seen corresponding path program 18 times [2020-10-14 23:16:33,515 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:16:33,515 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1873564398] [2020-10-14 23:16:33,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:16:33,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:16:33,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:16:34,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:16:34,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-14 23:16:34,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:16:34,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 573 [2020-10-14 23:16:34,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:16:34,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:16:34,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-14 23:16:34,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:16:34,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-14 23:16:34,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:16:34,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:16:34,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:16:34,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:16:34,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:16:34,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:16:34,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:16:34,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:16:34,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:16:34,661 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:16:34,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:16:34,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:16:34,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:16:34,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:16:34,682 INFO L134 CoverageAnalysis]: Checked inductivity of 1431 backedges. 0 proven. 1431 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:16:34,683 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1873564398] [2020-10-14 23:16:34,683 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:16:34,683 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-14 23:16:34,683 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845035442] [2020-10-14 23:16:34,684 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-14 23:16:34,684 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:16:34,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-14 23:16:34,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2020-10-14 23:16:34,685 INFO L87 Difference]: Start difference. First operand 122 states and 123 transitions. Second operand 31 states. [2020-10-14 23:16:34,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:16:34,880 INFO L93 Difference]: Finished difference Result 136 states and 138 transitions. [2020-10-14 23:16:34,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-14 23:16:34,881 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 120 [2020-10-14 23:16:34,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:16:34,882 INFO L225 Difference]: With dead ends: 136 [2020-10-14 23:16:34,882 INFO L226 Difference]: Without dead ends: 129 [2020-10-14 23:16:34,884 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2020-10-14 23:16:34,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2020-10-14 23:16:34,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 126. [2020-10-14 23:16:34,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-10-14 23:16:34,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 127 transitions. [2020-10-14 23:16:34,894 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 127 transitions. Word has length 120 [2020-10-14 23:16:34,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:16:34,895 INFO L479 AbstractCegarLoop]: Abstraction has 126 states and 127 transitions. [2020-10-14 23:16:34,895 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-14 23:16:34,895 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 127 transitions. [2020-10-14 23:16:34,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-14 23:16:34,896 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:16:34,896 INFO L422 BasicCegarLoop]: trace histogram [28, 28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:16:34,897 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-14 23:16:34,897 INFO L427 AbstractCegarLoop]: === Iteration 31 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:16:34,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:16:34,897 INFO L82 PathProgramCache]: Analyzing trace with hash 1465663105, now seen corresponding path program 19 times [2020-10-14 23:16:34,897 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:16:34,898 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1091680110] [2020-10-14 23:16:34,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:16:34,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:16:34,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:16:35,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:16:35,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-14 23:16:35,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:16:35,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 739 [2020-10-14 23:16:35,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:16:35,674 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:16:35,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-14 23:16:35,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:16:35,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-14 23:16:35,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:16:36,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:16:36,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:16:36,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:16:36,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:16:36,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:16:36,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:16:36,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:16:36,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:16:36,218 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:16:36,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:16:36,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:16:36,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:16:36,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:16:36,247 INFO L134 CoverageAnalysis]: Checked inductivity of 1540 backedges. 0 proven. 1540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:16:36,247 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1091680110] [2020-10-14 23:16:36,248 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:16:36,248 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-14 23:16:36,248 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231510007] [2020-10-14 23:16:36,249 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-14 23:16:36,250 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:16:36,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-14 23:16:36,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992 [2020-10-14 23:16:36,251 INFO L87 Difference]: Start difference. First operand 126 states and 127 transitions. Second operand 32 states. [2020-10-14 23:16:36,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:16:36,403 INFO L93 Difference]: Finished difference Result 140 states and 142 transitions. [2020-10-14 23:16:36,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-14 23:16:36,403 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 124 [2020-10-14 23:16:36,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:16:36,405 INFO L225 Difference]: With dead ends: 140 [2020-10-14 23:16:36,405 INFO L226 Difference]: Without dead ends: 133 [2020-10-14 23:16:36,405 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992 [2020-10-14 23:16:36,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-10-14 23:16:36,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 130. [2020-10-14 23:16:36,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-10-14 23:16:36,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 131 transitions. [2020-10-14 23:16:36,410 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 131 transitions. Word has length 124 [2020-10-14 23:16:36,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:16:36,410 INFO L479 AbstractCegarLoop]: Abstraction has 130 states and 131 transitions. [2020-10-14 23:16:36,410 INFO L480 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-14 23:16:36,411 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 131 transitions. [2020-10-14 23:16:36,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-14 23:16:36,412 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:16:36,412 INFO L422 BasicCegarLoop]: trace histogram [29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:16:36,412 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-14 23:16:36,412 INFO L427 AbstractCegarLoop]: === Iteration 32 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:16:36,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:16:36,413 INFO L82 PathProgramCache]: Analyzing trace with hash -1855886712, now seen corresponding path program 20 times [2020-10-14 23:16:36,413 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:16:36,413 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1095818854] [2020-10-14 23:16:36,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:16:36,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:16:36,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:16:37,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:16:37,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-14 23:16:37,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:16:37,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 657 [2020-10-14 23:16:37,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:16:37,100 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:16:37,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-14 23:16:37,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:16:37,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-14 23:16:37,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:16:37,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:16:37,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:16:37,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:16:37,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:16:37,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:16:37,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:16:37,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:16:37,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:16:37,702 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:16:37,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:16:37,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:16:37,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:16:37,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:16:37,731 INFO L134 CoverageAnalysis]: Checked inductivity of 1653 backedges. 0 proven. 1653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:16:37,732 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1095818854] [2020-10-14 23:16:37,732 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:16:37,732 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-10-14 23:16:37,732 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141639938] [2020-10-14 23:16:37,734 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-10-14 23:16:37,734 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:16:37,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-10-14 23:16:37,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2020-10-14 23:16:37,735 INFO L87 Difference]: Start difference. First operand 130 states and 131 transitions. Second operand 33 states. [2020-10-14 23:16:37,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:16:37,887 INFO L93 Difference]: Finished difference Result 144 states and 146 transitions. [2020-10-14 23:16:37,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-14 23:16:37,888 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 128 [2020-10-14 23:16:37,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:16:37,889 INFO L225 Difference]: With dead ends: 144 [2020-10-14 23:16:37,889 INFO L226 Difference]: Without dead ends: 137 [2020-10-14 23:16:37,890 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2020-10-14 23:16:37,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2020-10-14 23:16:37,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 134. [2020-10-14 23:16:37,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-10-14 23:16:37,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 135 transitions. [2020-10-14 23:16:37,900 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 135 transitions. Word has length 128 [2020-10-14 23:16:37,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:16:37,901 INFO L479 AbstractCegarLoop]: Abstraction has 134 states and 135 transitions. [2020-10-14 23:16:37,901 INFO L480 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-10-14 23:16:37,901 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 135 transitions. [2020-10-14 23:16:37,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-14 23:16:37,902 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:16:37,902 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:16:37,902 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-14 23:16:37,903 INFO L427 AbstractCegarLoop]: === Iteration 33 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:16:37,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:16:37,903 INFO L82 PathProgramCache]: Analyzing trace with hash -1387054321, now seen corresponding path program 21 times [2020-10-14 23:16:37,903 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:16:37,903 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1151748738] [2020-10-14 23:16:37,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:16:37,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:16:37,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:16:38,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:16:38,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-14 23:16:38,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:16:38,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 706 [2020-10-14 23:16:38,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:16:38,648 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:16:38,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-14 23:16:38,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:16:38,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-10-14 23:16:38,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:16:39,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:16:39,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:16:39,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:16:39,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:16:39,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:16:39,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:16:39,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:16:39,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:16:39,271 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:16:39,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:16:39,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:16:39,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:16:39,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:16:39,286 INFO L134 CoverageAnalysis]: Checked inductivity of 1770 backedges. 0 proven. 1770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:16:39,286 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1151748738] [2020-10-14 23:16:39,286 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:16:39,286 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-10-14 23:16:39,287 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58171512] [2020-10-14 23:16:39,287 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-14 23:16:39,287 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:16:39,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-14 23:16:39,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2020-10-14 23:16:39,288 INFO L87 Difference]: Start difference. First operand 134 states and 135 transitions. Second operand 34 states. [2020-10-14 23:16:39,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:16:39,468 INFO L93 Difference]: Finished difference Result 148 states and 150 transitions. [2020-10-14 23:16:39,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-14 23:16:39,468 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 132 [2020-10-14 23:16:39,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:16:39,470 INFO L225 Difference]: With dead ends: 148 [2020-10-14 23:16:39,470 INFO L226 Difference]: Without dead ends: 141 [2020-10-14 23:16:39,472 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2020-10-14 23:16:39,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2020-10-14 23:16:39,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 138. [2020-10-14 23:16:39,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-10-14 23:16:39,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 139 transitions. [2020-10-14 23:16:39,481 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 139 transitions. Word has length 132 [2020-10-14 23:16:39,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:16:39,482 INFO L479 AbstractCegarLoop]: Abstraction has 138 states and 139 transitions. [2020-10-14 23:16:39,482 INFO L480 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-10-14 23:16:39,482 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 139 transitions. [2020-10-14 23:16:39,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-10-14 23:16:39,484 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:16:39,484 INFO L422 BasicCegarLoop]: trace histogram [31, 31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:16:39,484 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-14 23:16:39,484 INFO L427 AbstractCegarLoop]: === Iteration 34 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:16:39,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:16:39,485 INFO L82 PathProgramCache]: Analyzing trace with hash -481595370, now seen corresponding path program 22 times [2020-10-14 23:16:39,485 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:16:39,485 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [210252427] [2020-10-14 23:16:39,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:16:39,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:16:39,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:16:40,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:16:40,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-14 23:16:40,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:16:40,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 846 [2020-10-14 23:16:40,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:16:40,378 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:16:40,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-14 23:16:40,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:16:40,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-14 23:16:40,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:16:41,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:16:41,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:16:41,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:16:41,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:16:41,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:16:41,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:16:41,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:16:41,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:16:41,015 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:16:41,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:16:41,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:16:41,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:16:41,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:16:41,031 INFO L134 CoverageAnalysis]: Checked inductivity of 1891 backedges. 0 proven. 1891 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:16:41,031 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [210252427] [2020-10-14 23:16:41,031 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:16:41,032 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2020-10-14 23:16:41,032 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982846064] [2020-10-14 23:16:41,032 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-10-14 23:16:41,032 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:16:41,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-10-14 23:16:41,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190 [2020-10-14 23:16:41,033 INFO L87 Difference]: Start difference. First operand 138 states and 139 transitions. Second operand 35 states. [2020-10-14 23:16:41,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:16:41,200 INFO L93 Difference]: Finished difference Result 152 states and 154 transitions. [2020-10-14 23:16:41,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-14 23:16:41,200 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 136 [2020-10-14 23:16:41,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:16:41,202 INFO L225 Difference]: With dead ends: 152 [2020-10-14 23:16:41,202 INFO L226 Difference]: Without dead ends: 145 [2020-10-14 23:16:41,203 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190 [2020-10-14 23:16:41,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-10-14 23:16:41,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 142. [2020-10-14 23:16:41,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-14 23:16:41,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 143 transitions. [2020-10-14 23:16:41,208 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 143 transitions. Word has length 136 [2020-10-14 23:16:41,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:16:41,209 INFO L479 AbstractCegarLoop]: Abstraction has 142 states and 143 transitions. [2020-10-14 23:16:41,209 INFO L480 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-10-14 23:16:41,209 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 143 transitions. [2020-10-14 23:16:41,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-10-14 23:16:41,210 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:16:41,211 INFO L422 BasicCegarLoop]: trace histogram [32, 32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:16:41,211 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-14 23:16:41,211 INFO L427 AbstractCegarLoop]: === Iteration 35 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:16:41,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:16:41,211 INFO L82 PathProgramCache]: Analyzing trace with hash 1216596381, now seen corresponding path program 23 times [2020-10-14 23:16:41,211 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:16:41,212 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1827069986] [2020-10-14 23:16:41,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:16:41,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:16:41,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:16:42,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:16:42,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-14 23:16:42,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:16:42,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 813 [2020-10-14 23:16:42,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:16:42,054 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:16:42,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-14 23:16:42,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:16:42,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-14 23:16:42,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:16:42,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:16:42,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:16:42,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:16:42,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:16:42,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:16:42,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:16:42,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:16:42,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:16:42,716 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:16:42,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:16:42,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:16:42,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:16:42,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:16:42,733 INFO L134 CoverageAnalysis]: Checked inductivity of 2016 backedges. 0 proven. 2016 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:16:42,734 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1827069986] [2020-10-14 23:16:42,734 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:16:42,734 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2020-10-14 23:16:42,734 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547111402] [2020-10-14 23:16:42,734 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-10-14 23:16:42,734 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:16:42,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-10-14 23:16:42,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=597, Invalid=663, Unknown=0, NotChecked=0, Total=1260 [2020-10-14 23:16:42,735 INFO L87 Difference]: Start difference. First operand 142 states and 143 transitions. Second operand 36 states. [2020-10-14 23:16:42,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:16:42,903 INFO L93 Difference]: Finished difference Result 156 states and 158 transitions. [2020-10-14 23:16:42,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-14 23:16:42,904 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 140 [2020-10-14 23:16:42,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:16:42,905 INFO L225 Difference]: With dead ends: 156 [2020-10-14 23:16:42,905 INFO L226 Difference]: Without dead ends: 149 [2020-10-14 23:16:42,906 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=597, Invalid=663, Unknown=0, NotChecked=0, Total=1260 [2020-10-14 23:16:42,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-10-14 23:16:42,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 146. [2020-10-14 23:16:42,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-10-14 23:16:42,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 147 transitions. [2020-10-14 23:16:42,911 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 147 transitions. Word has length 140 [2020-10-14 23:16:42,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:16:42,912 INFO L479 AbstractCegarLoop]: Abstraction has 146 states and 147 transitions. [2020-10-14 23:16:42,912 INFO L480 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-10-14 23:16:42,912 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 147 transitions. [2020-10-14 23:16:42,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-10-14 23:16:42,914 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:16:42,914 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:16:42,914 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-14 23:16:42,914 INFO L427 AbstractCegarLoop]: === Iteration 36 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:16:42,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:16:42,915 INFO L82 PathProgramCache]: Analyzing trace with hash 1062602660, now seen corresponding path program 24 times [2020-10-14 23:16:42,915 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:16:42,915 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [842714919] [2020-10-14 23:16:42,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:16:42,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:16:42,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:16:43,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:16:43,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-14 23:16:43,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:16:43,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 853 [2020-10-14 23:16:43,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:16:43,798 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:16:43,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-14 23:16:43,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:16:43,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-10-14 23:16:43,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:16:44,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:16:44,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:16:44,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:16:44,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:16:44,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:16:44,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:16:44,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:16:44,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:16:44,505 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:16:44,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:16:44,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:16:44,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:16:44,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:16:44,521 INFO L134 CoverageAnalysis]: Checked inductivity of 2145 backedges. 0 proven. 2145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:16:44,521 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [842714919] [2020-10-14 23:16:44,521 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:16:44,521 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2020-10-14 23:16:44,521 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842422678] [2020-10-14 23:16:44,522 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-10-14 23:16:44,522 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:16:44,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-10-14 23:16:44,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=632, Invalid=700, Unknown=0, NotChecked=0, Total=1332 [2020-10-14 23:16:44,523 INFO L87 Difference]: Start difference. First operand 146 states and 147 transitions. Second operand 37 states. [2020-10-14 23:16:44,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:16:44,692 INFO L93 Difference]: Finished difference Result 160 states and 162 transitions. [2020-10-14 23:16:44,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-14 23:16:44,693 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 144 [2020-10-14 23:16:44,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:16:44,694 INFO L225 Difference]: With dead ends: 160 [2020-10-14 23:16:44,694 INFO L226 Difference]: Without dead ends: 153 [2020-10-14 23:16:44,695 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=632, Invalid=700, Unknown=0, NotChecked=0, Total=1332 [2020-10-14 23:16:44,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-10-14 23:16:44,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 150. [2020-10-14 23:16:44,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-10-14 23:16:44,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 151 transitions. [2020-10-14 23:16:44,700 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 151 transitions. Word has length 144 [2020-10-14 23:16:44,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:16:44,700 INFO L479 AbstractCegarLoop]: Abstraction has 150 states and 151 transitions. [2020-10-14 23:16:44,700 INFO L480 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-10-14 23:16:44,700 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 151 transitions. [2020-10-14 23:16:44,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-14 23:16:44,701 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:16:44,701 INFO L422 BasicCegarLoop]: trace histogram [34, 34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:16:44,701 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-14 23:16:44,702 INFO L427 AbstractCegarLoop]: === Iteration 37 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:16:44,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:16:44,702 INFO L82 PathProgramCache]: Analyzing trace with hash -415503829, now seen corresponding path program 25 times [2020-10-14 23:16:44,702 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:16:44,702 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1455264022] [2020-10-14 23:16:44,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:16:44,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:16:44,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:16:45,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:16:45,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-14 23:16:45,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:16:45,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 895 [2020-10-14 23:16:45,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:16:45,622 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:16:45,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-10-14 23:16:45,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:16:45,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-14 23:16:45,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:16:46,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:16:46,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:16:46,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:16:46,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:16:46,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:16:46,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:16:46,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:16:46,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:16:46,356 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:16:46,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:16:46,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:16:46,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:16:46,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:16:46,379 INFO L134 CoverageAnalysis]: Checked inductivity of 2278 backedges. 0 proven. 2278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:16:46,379 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1455264022] [2020-10-14 23:16:46,380 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:16:46,380 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2020-10-14 23:16:46,380 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106929966] [2020-10-14 23:16:46,380 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-10-14 23:16:46,381 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:16:46,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-10-14 23:16:46,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=668, Invalid=738, Unknown=0, NotChecked=0, Total=1406 [2020-10-14 23:16:46,382 INFO L87 Difference]: Start difference. First operand 150 states and 151 transitions. Second operand 38 states. [2020-10-14 23:16:46,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:16:46,571 INFO L93 Difference]: Finished difference Result 164 states and 166 transitions. [2020-10-14 23:16:46,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-14 23:16:46,572 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 148 [2020-10-14 23:16:46,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:16:46,574 INFO L225 Difference]: With dead ends: 164 [2020-10-14 23:16:46,574 INFO L226 Difference]: Without dead ends: 157 [2020-10-14 23:16:46,576 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=668, Invalid=738, Unknown=0, NotChecked=0, Total=1406 [2020-10-14 23:16:46,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-10-14 23:16:46,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 154. [2020-10-14 23:16:46,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-10-14 23:16:46,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 155 transitions. [2020-10-14 23:16:46,582 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 155 transitions. Word has length 148 [2020-10-14 23:16:46,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:16:46,582 INFO L479 AbstractCegarLoop]: Abstraction has 154 states and 155 transitions. [2020-10-14 23:16:46,582 INFO L480 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-10-14 23:16:46,583 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 155 transitions. [2020-10-14 23:16:46,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-14 23:16:46,583 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:16:46,584 INFO L422 BasicCegarLoop]: trace histogram [35, 35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:16:46,584 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-14 23:16:46,584 INFO L427 AbstractCegarLoop]: === Iteration 38 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:16:46,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:16:46,584 INFO L82 PathProgramCache]: Analyzing trace with hash -1932578510, now seen corresponding path program 26 times [2020-10-14 23:16:46,584 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:16:46,585 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2139544953] [2020-10-14 23:16:46,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:16:46,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:16:46,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:16:47,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:16:47,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-14 23:16:47,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:16:47,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 878 [2020-10-14 23:16:47,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:16:47,488 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:16:47,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 37 [2020-10-14 23:16:47,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:16:47,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-10-14 23:16:47,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:16:48,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:16:48,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:16:48,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:16:48,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:16:48,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:16:48,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:16:48,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:16:48,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:16:48,294 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:16:48,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:16:48,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:16:48,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:16:48,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:16:48,311 INFO L134 CoverageAnalysis]: Checked inductivity of 2415 backedges. 0 proven. 2415 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:16:48,311 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2139544953] [2020-10-14 23:16:48,311 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:16:48,312 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2020-10-14 23:16:48,312 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731679724] [2020-10-14 23:16:48,312 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-10-14 23:16:48,312 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:16:48,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-10-14 23:16:48,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=705, Invalid=777, Unknown=0, NotChecked=0, Total=1482 [2020-10-14 23:16:48,313 INFO L87 Difference]: Start difference. First operand 154 states and 155 transitions. Second operand 39 states. [2020-10-14 23:16:48,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:16:48,464 INFO L93 Difference]: Finished difference Result 168 states and 170 transitions. [2020-10-14 23:16:48,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-14 23:16:48,465 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 152 [2020-10-14 23:16:48,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:16:48,466 INFO L225 Difference]: With dead ends: 168 [2020-10-14 23:16:48,466 INFO L226 Difference]: Without dead ends: 161 [2020-10-14 23:16:48,467 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=705, Invalid=777, Unknown=0, NotChecked=0, Total=1482 [2020-10-14 23:16:48,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2020-10-14 23:16:48,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 158. [2020-10-14 23:16:48,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-10-14 23:16:48,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 159 transitions. [2020-10-14 23:16:48,474 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 159 transitions. Word has length 152 [2020-10-14 23:16:48,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:16:48,475 INFO L479 AbstractCegarLoop]: Abstraction has 158 states and 159 transitions. [2020-10-14 23:16:48,475 INFO L480 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-10-14 23:16:48,475 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 159 transitions. [2020-10-14 23:16:48,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-10-14 23:16:48,476 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:16:48,476 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:16:48,476 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-14 23:16:48,476 INFO L427 AbstractCegarLoop]: === Iteration 39 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:16:48,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:16:48,477 INFO L82 PathProgramCache]: Analyzing trace with hash 432643257, now seen corresponding path program 27 times [2020-10-14 23:16:48,477 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:16:48,477 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [655922730] [2020-10-14 23:16:48,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:16:48,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:16:48,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:16:49,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:16:49,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-14 23:16:49,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:16:49,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 956 [2020-10-14 23:16:49,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:16:49,463 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:16:49,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 38 [2020-10-14 23:16:49,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:16:49,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 146 [2020-10-14 23:16:49,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:16:50,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:16:50,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:16:50,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:16:50,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:16:50,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:16:50,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:16:50,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:16:50,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:16:50,320 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:16:50,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:16:50,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:16:50,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:16:50,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:16:50,338 INFO L134 CoverageAnalysis]: Checked inductivity of 2556 backedges. 0 proven. 2556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:16:50,339 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [655922730] [2020-10-14 23:16:50,339 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:16:50,339 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2020-10-14 23:16:50,339 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142810119] [2020-10-14 23:16:50,339 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2020-10-14 23:16:50,340 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:16:50,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2020-10-14 23:16:50,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=743, Invalid=817, Unknown=0, NotChecked=0, Total=1560 [2020-10-14 23:16:50,340 INFO L87 Difference]: Start difference. First operand 158 states and 159 transitions. Second operand 40 states. [2020-10-14 23:16:50,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:16:50,521 INFO L93 Difference]: Finished difference Result 172 states and 174 transitions. [2020-10-14 23:16:50,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-14 23:16:50,522 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 156 [2020-10-14 23:16:50,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:16:50,524 INFO L225 Difference]: With dead ends: 172 [2020-10-14 23:16:50,524 INFO L226 Difference]: Without dead ends: 165 [2020-10-14 23:16:50,525 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=743, Invalid=817, Unknown=0, NotChecked=0, Total=1560 [2020-10-14 23:16:50,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-10-14 23:16:50,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 162. [2020-10-14 23:16:50,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-10-14 23:16:50,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 163 transitions. [2020-10-14 23:16:50,531 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 163 transitions. Word has length 156 [2020-10-14 23:16:50,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:16:50,531 INFO L479 AbstractCegarLoop]: Abstraction has 162 states and 163 transitions. [2020-10-14 23:16:50,531 INFO L480 AbstractCegarLoop]: Interpolant automaton has 40 states. [2020-10-14 23:16:50,532 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 163 transitions. [2020-10-14 23:16:50,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-14 23:16:50,532 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:16:50,533 INFO L422 BasicCegarLoop]: trace histogram [37, 37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:16:50,533 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-14 23:16:50,533 INFO L427 AbstractCegarLoop]: === Iteration 40 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:16:50,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:16:50,533 INFO L82 PathProgramCache]: Analyzing trace with hash -2063274816, now seen corresponding path program 28 times [2020-10-14 23:16:50,533 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:16:50,534 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1153220535] [2020-10-14 23:16:50,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:16:50,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:16:50,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:16:51,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:16:51,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-14 23:16:51,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:16:51,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1032 [2020-10-14 23:16:51,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:16:51,596 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:16:51,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 39 [2020-10-14 23:16:51,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:16:51,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 150 [2020-10-14 23:16:51,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:16:52,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:16:52,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:16:52,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:16:52,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:16:52,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:16:52,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:16:52,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:16:52,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:16:52,461 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:16:52,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:16:52,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:16:52,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:16:52,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:16:52,480 INFO L134 CoverageAnalysis]: Checked inductivity of 2701 backedges. 0 proven. 2701 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:16:52,480 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1153220535] [2020-10-14 23:16:52,480 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:16:52,480 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2020-10-14 23:16:52,480 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469023926] [2020-10-14 23:16:52,481 INFO L459 AbstractCegarLoop]: Interpolant automaton has 41 states [2020-10-14 23:16:52,481 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:16:52,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2020-10-14 23:16:52,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=782, Invalid=858, Unknown=0, NotChecked=0, Total=1640 [2020-10-14 23:16:52,482 INFO L87 Difference]: Start difference. First operand 162 states and 163 transitions. Second operand 41 states. [2020-10-14 23:16:52,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:16:52,703 INFO L93 Difference]: Finished difference Result 176 states and 178 transitions. [2020-10-14 23:16:52,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-10-14 23:16:52,703 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 160 [2020-10-14 23:16:52,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:16:52,705 INFO L225 Difference]: With dead ends: 176 [2020-10-14 23:16:52,705 INFO L226 Difference]: Without dead ends: 169 [2020-10-14 23:16:52,706 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=782, Invalid=858, Unknown=0, NotChecked=0, Total=1640 [2020-10-14 23:16:52,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2020-10-14 23:16:52,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 166. [2020-10-14 23:16:52,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2020-10-14 23:16:52,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 167 transitions. [2020-10-14 23:16:52,712 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 167 transitions. Word has length 160 [2020-10-14 23:16:52,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:16:52,713 INFO L479 AbstractCegarLoop]: Abstraction has 166 states and 167 transitions. [2020-10-14 23:16:52,713 INFO L480 AbstractCegarLoop]: Interpolant automaton has 41 states. [2020-10-14 23:16:52,713 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 167 transitions. [2020-10-14 23:16:52,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-10-14 23:16:52,714 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:16:52,714 INFO L422 BasicCegarLoop]: trace histogram [38, 38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:16:52,714 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-14 23:16:52,714 INFO L427 AbstractCegarLoop]: === Iteration 41 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:16:52,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:16:52,715 INFO L82 PathProgramCache]: Analyzing trace with hash 1115349319, now seen corresponding path program 29 times [2020-10-14 23:16:52,715 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:16:52,715 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1867595268] [2020-10-14 23:16:52,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:16:52,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:16:52,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:16:53,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:16:53,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-10-14 23:16:53,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:16:53,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1230 [2020-10-14 23:16:53,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:16:53,980 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:16:53,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 40 [2020-10-14 23:16:53,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:16:53,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-14 23:16:53,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:16:54,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:16:54,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:16:54,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:16:54,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:16:54,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:16:54,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:16:54,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:16:54,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:16:54,884 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:16:54,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:16:54,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:16:54,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:16:54,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:16:54,907 INFO L134 CoverageAnalysis]: Checked inductivity of 2850 backedges. 0 proven. 2850 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:16:54,908 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1867595268] [2020-10-14 23:16:54,908 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:16:54,908 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2020-10-14 23:16:54,908 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265946094] [2020-10-14 23:16:54,909 INFO L459 AbstractCegarLoop]: Interpolant automaton has 42 states [2020-10-14 23:16:54,909 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:16:54,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2020-10-14 23:16:54,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=822, Invalid=900, Unknown=0, NotChecked=0, Total=1722 [2020-10-14 23:16:54,910 INFO L87 Difference]: Start difference. First operand 166 states and 167 transitions. Second operand 42 states. [2020-10-14 23:16:55,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:16:55,099 INFO L93 Difference]: Finished difference Result 180 states and 182 transitions. [2020-10-14 23:16:55,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-10-14 23:16:55,100 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 164 [2020-10-14 23:16:55,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:16:55,101 INFO L225 Difference]: With dead ends: 180 [2020-10-14 23:16:55,101 INFO L226 Difference]: Without dead ends: 173 [2020-10-14 23:16:55,102 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=822, Invalid=900, Unknown=0, NotChecked=0, Total=1722 [2020-10-14 23:16:55,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2020-10-14 23:16:55,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 170. [2020-10-14 23:16:55,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2020-10-14 23:16:55,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 171 transitions. [2020-10-14 23:16:55,110 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 171 transitions. Word has length 164 [2020-10-14 23:16:55,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:16:55,110 INFO L479 AbstractCegarLoop]: Abstraction has 170 states and 171 transitions. [2020-10-14 23:16:55,110 INFO L480 AbstractCegarLoop]: Interpolant automaton has 42 states. [2020-10-14 23:16:55,111 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 171 transitions. [2020-10-14 23:16:55,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-10-14 23:16:55,111 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:16:55,112 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:16:55,112 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-14 23:16:55,112 INFO L427 AbstractCegarLoop]: === Iteration 42 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:16:55,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:16:55,112 INFO L82 PathProgramCache]: Analyzing trace with hash -1287308722, now seen corresponding path program 30 times [2020-10-14 23:16:55,112 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:16:55,113 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1230973264] [2020-10-14 23:16:55,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:16:55,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:16:55,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:16:56,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:16:56,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-14 23:16:56,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:16:56,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1127 [2020-10-14 23:16:56,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:16:56,264 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:16:56,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 41 [2020-10-14 23:16:56,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:16:56,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 158 [2020-10-14 23:16:56,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:16:57,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:16:57,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:16:57,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:16:57,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:16:57,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:16:57,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:16:57,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:16:57,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:16:57,225 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:16:57,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:16:57,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:16:57,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:16:57,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:16:57,267 INFO L134 CoverageAnalysis]: Checked inductivity of 3003 backedges. 0 proven. 3003 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:16:57,267 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1230973264] [2020-10-14 23:16:57,267 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:16:57,267 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43] total 43 [2020-10-14 23:16:57,268 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376373854] [2020-10-14 23:16:57,268 INFO L459 AbstractCegarLoop]: Interpolant automaton has 43 states [2020-10-14 23:16:57,268 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:16:57,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2020-10-14 23:16:57,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=863, Invalid=943, Unknown=0, NotChecked=0, Total=1806 [2020-10-14 23:16:57,269 INFO L87 Difference]: Start difference. First operand 170 states and 171 transitions. Second operand 43 states. [2020-10-14 23:16:57,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:16:57,454 INFO L93 Difference]: Finished difference Result 184 states and 186 transitions. [2020-10-14 23:16:57,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-10-14 23:16:57,454 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 168 [2020-10-14 23:16:57,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:16:57,456 INFO L225 Difference]: With dead ends: 184 [2020-10-14 23:16:57,456 INFO L226 Difference]: Without dead ends: 177 [2020-10-14 23:16:57,457 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=863, Invalid=943, Unknown=0, NotChecked=0, Total=1806 [2020-10-14 23:16:57,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2020-10-14 23:16:57,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 174. [2020-10-14 23:16:57,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-10-14 23:16:57,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 175 transitions. [2020-10-14 23:16:57,462 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 175 transitions. Word has length 168 [2020-10-14 23:16:57,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:16:57,463 INFO L479 AbstractCegarLoop]: Abstraction has 174 states and 175 transitions. [2020-10-14 23:16:57,463 INFO L480 AbstractCegarLoop]: Interpolant automaton has 43 states. [2020-10-14 23:16:57,463 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 175 transitions. [2020-10-14 23:16:57,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-10-14 23:16:57,464 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:16:57,464 INFO L422 BasicCegarLoop]: trace histogram [40, 40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:16:57,465 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-14 23:16:57,465 INFO L427 AbstractCegarLoop]: === Iteration 43 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:16:57,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:16:57,465 INFO L82 PathProgramCache]: Analyzing trace with hash -1784825899, now seen corresponding path program 31 times [2020-10-14 23:16:57,465 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:16:57,466 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1419502979] [2020-10-14 23:16:57,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:16:57,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:16:57,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:16:58,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:16:58,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-14 23:16:58,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:16:58,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1136 [2020-10-14 23:16:58,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:16:58,639 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:16:58,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 42 [2020-10-14 23:16:58,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:16:58,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 162 [2020-10-14 23:16:58,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:16:59,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:16:59,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:16:59,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:16:59,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:16:59,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:16:59,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:16:59,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:16:59,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:16:59,677 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:16:59,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:16:59,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:16:59,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:16:59,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:16:59,698 INFO L134 CoverageAnalysis]: Checked inductivity of 3160 backedges. 0 proven. 3160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:16:59,698 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1419502979] [2020-10-14 23:16:59,698 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:16:59,698 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44] total 44 [2020-10-14 23:16:59,698 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469415683] [2020-10-14 23:16:59,699 INFO L459 AbstractCegarLoop]: Interpolant automaton has 44 states [2020-10-14 23:16:59,699 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:16:59,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2020-10-14 23:16:59,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=905, Invalid=987, Unknown=0, NotChecked=0, Total=1892 [2020-10-14 23:16:59,701 INFO L87 Difference]: Start difference. First operand 174 states and 175 transitions. Second operand 44 states. [2020-10-14 23:16:59,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:16:59,899 INFO L93 Difference]: Finished difference Result 188 states and 190 transitions. [2020-10-14 23:16:59,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-10-14 23:16:59,899 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 172 [2020-10-14 23:16:59,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:16:59,900 INFO L225 Difference]: With dead ends: 188 [2020-10-14 23:16:59,900 INFO L226 Difference]: Without dead ends: 181 [2020-10-14 23:16:59,901 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=905, Invalid=987, Unknown=0, NotChecked=0, Total=1892 [2020-10-14 23:16:59,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2020-10-14 23:16:59,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 178. [2020-10-14 23:16:59,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-10-14 23:16:59,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 179 transitions. [2020-10-14 23:16:59,910 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 179 transitions. Word has length 172 [2020-10-14 23:16:59,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:16:59,911 INFO L479 AbstractCegarLoop]: Abstraction has 178 states and 179 transitions. [2020-10-14 23:16:59,911 INFO L480 AbstractCegarLoop]: Interpolant automaton has 44 states. [2020-10-14 23:16:59,911 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 179 transitions. [2020-10-14 23:16:59,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-10-14 23:16:59,912 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:16:59,912 INFO L422 BasicCegarLoop]: trace histogram [41, 41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:16:59,912 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-14 23:16:59,912 INFO L427 AbstractCegarLoop]: === Iteration 44 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:16:59,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:16:59,913 INFO L82 PathProgramCache]: Analyzing trace with hash 1960712668, now seen corresponding path program 32 times [2020-10-14 23:16:59,913 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:16:59,913 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [296544479] [2020-10-14 23:16:59,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:16:59,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:16:59,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:17:01,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:17:01,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-10-14 23:17:01,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:17:01,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1314 [2020-10-14 23:17:01,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:17:01,259 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:17:01,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 43 [2020-10-14 23:17:01,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:17:01,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 166 [2020-10-14 23:17:01,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:17:02,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:17:02,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:17:02,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:17:02,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:17:02,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:17:02,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:17:02,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:17:02,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:17:02,304 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:17:02,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:17:02,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:17:02,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:17:02,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:17:02,329 INFO L134 CoverageAnalysis]: Checked inductivity of 3321 backedges. 0 proven. 3321 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:17:02,329 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [296544479] [2020-10-14 23:17:02,329 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:17:02,329 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45] total 45 [2020-10-14 23:17:02,330 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830951852] [2020-10-14 23:17:02,330 INFO L459 AbstractCegarLoop]: Interpolant automaton has 45 states [2020-10-14 23:17:02,330 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:17:02,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2020-10-14 23:17:02,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=948, Invalid=1032, Unknown=0, NotChecked=0, Total=1980 [2020-10-14 23:17:02,331 INFO L87 Difference]: Start difference. First operand 178 states and 179 transitions. Second operand 45 states. [2020-10-14 23:17:02,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:17:02,535 INFO L93 Difference]: Finished difference Result 192 states and 194 transitions. [2020-10-14 23:17:02,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-10-14 23:17:02,535 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 176 [2020-10-14 23:17:02,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:17:02,537 INFO L225 Difference]: With dead ends: 192 [2020-10-14 23:17:02,537 INFO L226 Difference]: Without dead ends: 185 [2020-10-14 23:17:02,538 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=948, Invalid=1032, Unknown=0, NotChecked=0, Total=1980 [2020-10-14 23:17:02,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-10-14 23:17:02,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 182. [2020-10-14 23:17:02,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2020-10-14 23:17:02,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 183 transitions. [2020-10-14 23:17:02,545 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 183 transitions. Word has length 176 [2020-10-14 23:17:02,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:17:02,546 INFO L479 AbstractCegarLoop]: Abstraction has 182 states and 183 transitions. [2020-10-14 23:17:02,546 INFO L480 AbstractCegarLoop]: Interpolant automaton has 45 states. [2020-10-14 23:17:02,546 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 183 transitions. [2020-10-14 23:17:02,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-10-14 23:17:02,547 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:17:02,548 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:17:02,548 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-14 23:17:02,548 INFO L427 AbstractCegarLoop]: === Iteration 45 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:17:02,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:17:02,548 INFO L82 PathProgramCache]: Analyzing trace with hash 427827299, now seen corresponding path program 33 times [2020-10-14 23:17:02,549 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:17:02,549 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1825112048] [2020-10-14 23:17:02,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:17:02,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:17:02,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:17:03,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:17:03,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-10-14 23:17:03,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:17:03,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1331 [2020-10-14 23:17:03,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:17:03,911 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:17:03,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 44 [2020-10-14 23:17:03,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:17:03,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 170 [2020-10-14 23:17:03,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:17:04,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:17:05,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:17:05,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:17:05,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:17:05,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:17:05,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:17:05,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:17:05,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:17:05,002 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:17:05,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:17:05,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:17:05,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:17:05,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:17:05,026 INFO L134 CoverageAnalysis]: Checked inductivity of 3486 backedges. 0 proven. 3486 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:17:05,027 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1825112048] [2020-10-14 23:17:05,027 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:17:05,027 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46] total 46 [2020-10-14 23:17:05,027 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589136767] [2020-10-14 23:17:05,027 INFO L459 AbstractCegarLoop]: Interpolant automaton has 46 states [2020-10-14 23:17:05,027 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:17:05,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2020-10-14 23:17:05,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=992, Invalid=1078, Unknown=0, NotChecked=0, Total=2070 [2020-10-14 23:17:05,028 INFO L87 Difference]: Start difference. First operand 182 states and 183 transitions. Second operand 46 states. [2020-10-14 23:17:05,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:17:05,241 INFO L93 Difference]: Finished difference Result 196 states and 198 transitions. [2020-10-14 23:17:05,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-10-14 23:17:05,241 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 180 [2020-10-14 23:17:05,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:17:05,243 INFO L225 Difference]: With dead ends: 196 [2020-10-14 23:17:05,243 INFO L226 Difference]: Without dead ends: 189 [2020-10-14 23:17:05,243 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=992, Invalid=1078, Unknown=0, NotChecked=0, Total=2070 [2020-10-14 23:17:05,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2020-10-14 23:17:05,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 186. [2020-10-14 23:17:05,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186 states. [2020-10-14 23:17:05,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 187 transitions. [2020-10-14 23:17:05,254 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 187 transitions. Word has length 180 [2020-10-14 23:17:05,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:17:05,255 INFO L479 AbstractCegarLoop]: Abstraction has 186 states and 187 transitions. [2020-10-14 23:17:05,255 INFO L480 AbstractCegarLoop]: Interpolant automaton has 46 states. [2020-10-14 23:17:05,255 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 187 transitions. [2020-10-14 23:17:05,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-10-14 23:17:05,256 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:17:05,257 INFO L422 BasicCegarLoop]: trace histogram [43, 43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:17:05,257 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-14 23:17:05,257 INFO L427 AbstractCegarLoop]: === Iteration 46 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:17:05,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:17:05,257 INFO L82 PathProgramCache]: Analyzing trace with hash -115504278, now seen corresponding path program 34 times [2020-10-14 23:17:05,257 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:17:05,258 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1595270266] [2020-10-14 23:17:05,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:17:05,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:17:05,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:17:07,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:17:07,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 190 [2020-10-14 23:17:07,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:17:07,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1989 [2020-10-14 23:17:07,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:17:07,293 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:17:07,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 45 [2020-10-14 23:17:07,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:17:07,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 174 [2020-10-14 23:17:07,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:17:08,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:17:08,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:17:08,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:17:08,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:17:08,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:17:08,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:17:08,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:17:08,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:17:08,461 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:17:08,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:17:08,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:17:08,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:17:08,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:17:08,485 INFO L134 CoverageAnalysis]: Checked inductivity of 3655 backedges. 0 proven. 3655 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:17:08,485 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1595270266] [2020-10-14 23:17:08,485 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:17:08,485 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47] total 47 [2020-10-14 23:17:08,486 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428398433] [2020-10-14 23:17:08,486 INFO L459 AbstractCegarLoop]: Interpolant automaton has 47 states [2020-10-14 23:17:08,486 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:17:08,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2020-10-14 23:17:08,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1037, Invalid=1125, Unknown=0, NotChecked=0, Total=2162 [2020-10-14 23:17:08,487 INFO L87 Difference]: Start difference. First operand 186 states and 187 transitions. Second operand 47 states. [2020-10-14 23:17:08,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:17:08,708 INFO L93 Difference]: Finished difference Result 200 states and 202 transitions. [2020-10-14 23:17:08,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-10-14 23:17:08,709 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 184 [2020-10-14 23:17:08,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:17:08,711 INFO L225 Difference]: With dead ends: 200 [2020-10-14 23:17:08,712 INFO L226 Difference]: Without dead ends: 193 [2020-10-14 23:17:08,713 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1037, Invalid=1125, Unknown=0, NotChecked=0, Total=2162 [2020-10-14 23:17:08,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2020-10-14 23:17:08,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 190. [2020-10-14 23:17:08,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2020-10-14 23:17:08,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 191 transitions. [2020-10-14 23:17:08,720 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 191 transitions. Word has length 184 [2020-10-14 23:17:08,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:17:08,720 INFO L479 AbstractCegarLoop]: Abstraction has 190 states and 191 transitions. [2020-10-14 23:17:08,720 INFO L480 AbstractCegarLoop]: Interpolant automaton has 47 states. [2020-10-14 23:17:08,720 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 191 transitions. [2020-10-14 23:17:08,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-10-14 23:17:08,721 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:17:08,722 INFO L422 BasicCegarLoop]: trace histogram [44, 44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:17:08,722 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-10-14 23:17:08,722 INFO L427 AbstractCegarLoop]: === Iteration 47 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:17:08,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:17:08,722 INFO L82 PathProgramCache]: Analyzing trace with hash -1502602511, now seen corresponding path program 35 times [2020-10-14 23:17:08,723 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:17:08,723 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1970132837] [2020-10-14 23:17:08,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:17:08,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:17:08,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:17:10,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:17:10,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-14 23:17:10,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:17:10,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1489 [2020-10-14 23:17:10,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:17:10,249 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:17:10,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 46 [2020-10-14 23:17:10,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:17:10,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 178 [2020-10-14 23:17:10,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:17:11,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:17:11,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:17:11,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:17:11,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:17:11,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:17:11,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:17:11,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:17:11,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:17:11,458 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:17:11,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:17:11,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:17:11,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:17:11,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:17:11,486 INFO L134 CoverageAnalysis]: Checked inductivity of 3828 backedges. 0 proven. 3828 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:17:11,486 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1970132837] [2020-10-14 23:17:11,486 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:17:11,487 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48] total 48 [2020-10-14 23:17:11,487 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001798385] [2020-10-14 23:17:11,487 INFO L459 AbstractCegarLoop]: Interpolant automaton has 48 states [2020-10-14 23:17:11,487 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:17:11,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2020-10-14 23:17:11,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1083, Invalid=1173, Unknown=0, NotChecked=0, Total=2256 [2020-10-14 23:17:11,488 INFO L87 Difference]: Start difference. First operand 190 states and 191 transitions. Second operand 48 states. [2020-10-14 23:17:11,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:17:11,727 INFO L93 Difference]: Finished difference Result 204 states and 206 transitions. [2020-10-14 23:17:11,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-10-14 23:17:11,728 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 188 [2020-10-14 23:17:11,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:17:11,730 INFO L225 Difference]: With dead ends: 204 [2020-10-14 23:17:11,730 INFO L226 Difference]: Without dead ends: 197 [2020-10-14 23:17:11,730 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1083, Invalid=1173, Unknown=0, NotChecked=0, Total=2256 [2020-10-14 23:17:11,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2020-10-14 23:17:11,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 194. [2020-10-14 23:17:11,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-10-14 23:17:11,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 195 transitions. [2020-10-14 23:17:11,736 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 195 transitions. Word has length 188 [2020-10-14 23:17:11,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:17:11,737 INFO L479 AbstractCegarLoop]: Abstraction has 194 states and 195 transitions. [2020-10-14 23:17:11,737 INFO L480 AbstractCegarLoop]: Interpolant automaton has 48 states. [2020-10-14 23:17:11,737 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 195 transitions. [2020-10-14 23:17:11,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-10-14 23:17:11,738 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:17:11,738 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:17:11,739 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-10-14 23:17:11,739 INFO L427 AbstractCegarLoop]: === Iteration 48 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:17:11,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:17:11,739 INFO L82 PathProgramCache]: Analyzing trace with hash 1095864056, now seen corresponding path program 36 times [2020-10-14 23:17:11,739 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:17:11,740 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [525963103] [2020-10-14 23:17:11,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:17:11,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:17:11,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:17:13,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:17:13,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 198 [2020-10-14 23:17:13,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:17:13,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1628 [2020-10-14 23:17:13,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:17:13,409 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:17:13,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 47 [2020-10-14 23:17:13,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:17:13,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 182 [2020-10-14 23:17:13,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:17:14,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:17:14,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:17:14,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:17:14,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:17:14,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:17:14,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:17:14,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:17:14,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:17:14,691 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:17:14,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:17:14,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:17:14,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:17:14,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:17:14,716 INFO L134 CoverageAnalysis]: Checked inductivity of 4005 backedges. 0 proven. 4005 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:17:14,717 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [525963103] [2020-10-14 23:17:14,717 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:17:14,717 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49] total 49 [2020-10-14 23:17:14,717 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112792156] [2020-10-14 23:17:14,718 INFO L459 AbstractCegarLoop]: Interpolant automaton has 49 states [2020-10-14 23:17:14,718 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:17:14,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2020-10-14 23:17:14,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1130, Invalid=1222, Unknown=0, NotChecked=0, Total=2352 [2020-10-14 23:17:14,719 INFO L87 Difference]: Start difference. First operand 194 states and 195 transitions. Second operand 49 states. [2020-10-14 23:17:14,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:17:14,957 INFO L93 Difference]: Finished difference Result 208 states and 210 transitions. [2020-10-14 23:17:14,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2020-10-14 23:17:14,958 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 192 [2020-10-14 23:17:14,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:17:14,959 INFO L225 Difference]: With dead ends: 208 [2020-10-14 23:17:14,959 INFO L226 Difference]: Without dead ends: 201 [2020-10-14 23:17:14,960 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1130, Invalid=1222, Unknown=0, NotChecked=0, Total=2352 [2020-10-14 23:17:14,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2020-10-14 23:17:14,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 198. [2020-10-14 23:17:14,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2020-10-14 23:17:14,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 199 transitions. [2020-10-14 23:17:14,968 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 199 transitions. Word has length 192 [2020-10-14 23:17:14,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:17:14,968 INFO L479 AbstractCegarLoop]: Abstraction has 198 states and 199 transitions. [2020-10-14 23:17:14,969 INFO L480 AbstractCegarLoop]: Interpolant automaton has 49 states. [2020-10-14 23:17:14,969 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 199 transitions. [2020-10-14 23:17:14,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-10-14 23:17:14,970 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:17:14,970 INFO L422 BasicCegarLoop]: trace histogram [46, 46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:17:14,970 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-10-14 23:17:14,970 INFO L427 AbstractCegarLoop]: === Iteration 49 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:17:14,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:17:14,970 INFO L82 PathProgramCache]: Analyzing trace with hash -423909505, now seen corresponding path program 37 times [2020-10-14 23:17:14,971 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:17:14,971 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [957257750] [2020-10-14 23:17:14,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:17:15,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:17:15,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:17:16,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:17:16,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 202 [2020-10-14 23:17:16,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:17:16,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1556 [2020-10-14 23:17:16,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:17:16,564 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:17:16,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 48 [2020-10-14 23:17:16,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:17:16,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 186 [2020-10-14 23:17:16,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:17:17,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:17:17,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:17:17,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:17:17,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:17:17,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:17:17,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:17:17,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:17:17,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:17:17,884 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:17:17,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:17:17,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:17:17,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:17:17,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:17:17,910 INFO L134 CoverageAnalysis]: Checked inductivity of 4186 backedges. 0 proven. 4186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:17:17,911 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [957257750] [2020-10-14 23:17:17,911 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:17:17,911 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50] total 50 [2020-10-14 23:17:17,911 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410794524] [2020-10-14 23:17:17,911 INFO L459 AbstractCegarLoop]: Interpolant automaton has 50 states [2020-10-14 23:17:17,911 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:17:17,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2020-10-14 23:17:17,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1178, Invalid=1272, Unknown=0, NotChecked=0, Total=2450 [2020-10-14 23:17:17,912 INFO L87 Difference]: Start difference. First operand 198 states and 199 transitions. Second operand 50 states. [2020-10-14 23:17:18,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:17:18,118 INFO L93 Difference]: Finished difference Result 212 states and 214 transitions. [2020-10-14 23:17:18,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2020-10-14 23:17:18,118 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 196 [2020-10-14 23:17:18,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:17:18,120 INFO L225 Difference]: With dead ends: 212 [2020-10-14 23:17:18,120 INFO L226 Difference]: Without dead ends: 205 [2020-10-14 23:17:18,121 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1178, Invalid=1272, Unknown=0, NotChecked=0, Total=2450 [2020-10-14 23:17:18,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2020-10-14 23:17:18,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 202. [2020-10-14 23:17:18,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-10-14 23:17:18,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 203 transitions. [2020-10-14 23:17:18,127 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 203 transitions. Word has length 196 [2020-10-14 23:17:18,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:17:18,128 INFO L479 AbstractCegarLoop]: Abstraction has 202 states and 203 transitions. [2020-10-14 23:17:18,128 INFO L480 AbstractCegarLoop]: Interpolant automaton has 50 states. [2020-10-14 23:17:18,128 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 203 transitions. [2020-10-14 23:17:18,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-10-14 23:17:18,129 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:17:18,129 INFO L422 BasicCegarLoop]: trace histogram [47, 47, 47, 47, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:17:18,129 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-10-14 23:17:18,130 INFO L427 AbstractCegarLoop]: === Iteration 50 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:17:18,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:17:18,130 INFO L82 PathProgramCache]: Analyzing trace with hash 549987462, now seen corresponding path program 38 times [2020-10-14 23:17:18,130 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:17:18,130 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1110633748] [2020-10-14 23:17:18,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:17:18,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:17:18,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:17:19,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:17:19,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 206 [2020-10-14 23:17:19,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:17:19,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1618 [2020-10-14 23:17:19,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:17:19,780 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:17:19,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 49 [2020-10-14 23:17:19,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:17:19,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 190 [2020-10-14 23:17:19,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:17:21,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:17:21,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:17:21,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:17:21,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:17:21,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:17:21,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:17:21,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:17:21,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:17:21,169 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:17:21,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:17:21,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:17:21,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:17:21,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:17:21,196 INFO L134 CoverageAnalysis]: Checked inductivity of 4371 backedges. 0 proven. 4371 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:17:21,197 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1110633748] [2020-10-14 23:17:21,197 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:17:21,197 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51] total 51 [2020-10-14 23:17:21,197 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383003358] [2020-10-14 23:17:21,198 INFO L459 AbstractCegarLoop]: Interpolant automaton has 51 states [2020-10-14 23:17:21,198 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:17:21,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2020-10-14 23:17:21,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1227, Invalid=1323, Unknown=0, NotChecked=0, Total=2550 [2020-10-14 23:17:21,199 INFO L87 Difference]: Start difference. First operand 202 states and 203 transitions. Second operand 51 states. [2020-10-14 23:17:21,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:17:21,464 INFO L93 Difference]: Finished difference Result 216 states and 218 transitions. [2020-10-14 23:17:21,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2020-10-14 23:17:21,465 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 200 [2020-10-14 23:17:21,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:17:21,467 INFO L225 Difference]: With dead ends: 216 [2020-10-14 23:17:21,467 INFO L226 Difference]: Without dead ends: 209 [2020-10-14 23:17:21,468 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1227, Invalid=1323, Unknown=0, NotChecked=0, Total=2550 [2020-10-14 23:17:21,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2020-10-14 23:17:21,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 206. [2020-10-14 23:17:21,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-10-14 23:17:21,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 207 transitions. [2020-10-14 23:17:21,474 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 207 transitions. Word has length 200 [2020-10-14 23:17:21,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:17:21,475 INFO L479 AbstractCegarLoop]: Abstraction has 206 states and 207 transitions. [2020-10-14 23:17:21,475 INFO L480 AbstractCegarLoop]: Interpolant automaton has 51 states. [2020-10-14 23:17:21,475 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 207 transitions. [2020-10-14 23:17:21,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-10-14 23:17:21,476 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:17:21,476 INFO L422 BasicCegarLoop]: trace histogram [48, 48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:17:21,477 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2020-10-14 23:17:21,477 INFO L427 AbstractCegarLoop]: === Iteration 51 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:17:21,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:17:21,477 INFO L82 PathProgramCache]: Analyzing trace with hash 1454425613, now seen corresponding path program 39 times [2020-10-14 23:17:21,477 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:17:21,478 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2055598320] [2020-10-14 23:17:21,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:17:21,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:17:21,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:17:23,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:17:23,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 210 [2020-10-14 23:17:23,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:17:23,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1909 [2020-10-14 23:17:23,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:17:23,432 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:17:23,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 50 [2020-10-14 23:17:23,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:17:23,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 194 [2020-10-14 23:17:23,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:17:24,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:17:24,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:17:24,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:17:24,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:17:24,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:17:24,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:17:24,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:17:24,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:17:24,856 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:17:24,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:17:24,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:17:24,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:17:24,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:17:24,897 INFO L134 CoverageAnalysis]: Checked inductivity of 4560 backedges. 0 proven. 4560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:17:24,898 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2055598320] [2020-10-14 23:17:24,898 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:17:24,898 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52] total 52 [2020-10-14 23:17:24,898 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598008662] [2020-10-14 23:17:24,899 INFO L459 AbstractCegarLoop]: Interpolant automaton has 52 states [2020-10-14 23:17:24,899 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:17:24,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2020-10-14 23:17:24,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1277, Invalid=1375, Unknown=0, NotChecked=0, Total=2652 [2020-10-14 23:17:24,900 INFO L87 Difference]: Start difference. First operand 206 states and 207 transitions. Second operand 52 states. [2020-10-14 23:17:25,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:17:25,122 INFO L93 Difference]: Finished difference Result 220 states and 222 transitions. [2020-10-14 23:17:25,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2020-10-14 23:17:25,122 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 204 [2020-10-14 23:17:25,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:17:25,125 INFO L225 Difference]: With dead ends: 220 [2020-10-14 23:17:25,125 INFO L226 Difference]: Without dead ends: 213 [2020-10-14 23:17:25,126 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1277, Invalid=1375, Unknown=0, NotChecked=0, Total=2652 [2020-10-14 23:17:25,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2020-10-14 23:17:25,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 210. [2020-10-14 23:17:25,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2020-10-14 23:17:25,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 211 transitions. [2020-10-14 23:17:25,131 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 211 transitions. Word has length 204 [2020-10-14 23:17:25,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:17:25,132 INFO L479 AbstractCegarLoop]: Abstraction has 210 states and 211 transitions. [2020-10-14 23:17:25,132 INFO L480 AbstractCegarLoop]: Interpolant automaton has 52 states. [2020-10-14 23:17:25,132 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 211 transitions. [2020-10-14 23:17:25,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2020-10-14 23:17:25,133 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:17:25,133 INFO L422 BasicCegarLoop]: trace histogram [49, 49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:17:25,134 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2020-10-14 23:17:25,134 INFO L427 AbstractCegarLoop]: === Iteration 52 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:17:25,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:17:25,134 INFO L82 PathProgramCache]: Analyzing trace with hash 1020218388, now seen corresponding path program 40 times [2020-10-14 23:17:25,134 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:17:25,135 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [414496896] [2020-10-14 23:17:25,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:17:25,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:17:25,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:17:27,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:17:27,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-10-14 23:17:27,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:17:27,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2023 [2020-10-14 23:17:27,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:17:27,202 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:17:27,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 51 [2020-10-14 23:17:27,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:17:27,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 198 [2020-10-14 23:17:27,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:17:28,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:17:28,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:17:28,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:17:28,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:17:28,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:17:28,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:17:28,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:17:28,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:17:28,676 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:17:28,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:17:28,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:17:28,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:17:28,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:17:28,705 INFO L134 CoverageAnalysis]: Checked inductivity of 4753 backedges. 0 proven. 4753 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:17:28,706 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [414496896] [2020-10-14 23:17:28,706 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:17:28,706 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53] total 53 [2020-10-14 23:17:28,706 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975565815] [2020-10-14 23:17:28,706 INFO L459 AbstractCegarLoop]: Interpolant automaton has 53 states [2020-10-14 23:17:28,707 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:17:28,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2020-10-14 23:17:28,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1328, Invalid=1428, Unknown=0, NotChecked=0, Total=2756 [2020-10-14 23:17:28,707 INFO L87 Difference]: Start difference. First operand 210 states and 211 transitions. Second operand 53 states. [2020-10-14 23:17:28,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:17:28,940 INFO L93 Difference]: Finished difference Result 224 states and 226 transitions. [2020-10-14 23:17:28,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2020-10-14 23:17:28,941 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 208 [2020-10-14 23:17:28,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:17:28,943 INFO L225 Difference]: With dead ends: 224 [2020-10-14 23:17:28,943 INFO L226 Difference]: Without dead ends: 217 [2020-10-14 23:17:28,944 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1328, Invalid=1428, Unknown=0, NotChecked=0, Total=2756 [2020-10-14 23:17:28,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2020-10-14 23:17:28,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 214. [2020-10-14 23:17:28,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2020-10-14 23:17:28,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 215 transitions. [2020-10-14 23:17:28,950 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 215 transitions. Word has length 208 [2020-10-14 23:17:28,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:17:28,950 INFO L479 AbstractCegarLoop]: Abstraction has 214 states and 215 transitions. [2020-10-14 23:17:28,950 INFO L480 AbstractCegarLoop]: Interpolant automaton has 53 states. [2020-10-14 23:17:28,950 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 215 transitions. [2020-10-14 23:17:28,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-10-14 23:17:28,952 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:17:28,952 INFO L422 BasicCegarLoop]: trace histogram [50, 50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:17:28,952 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2020-10-14 23:17:28,952 INFO L427 AbstractCegarLoop]: === Iteration 53 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:17:28,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:17:28,952 INFO L82 PathProgramCache]: Analyzing trace with hash 1151170203, now seen corresponding path program 41 times [2020-10-14 23:17:28,953 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:17:28,953 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [563054262] [2020-10-14 23:17:28,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:17:28,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:17:29,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:17:30,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:17:30,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 218 [2020-10-14 23:17:30,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:17:30,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1915 [2020-10-14 23:17:30,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:17:30,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:17:30,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 52 [2020-10-14 23:17:30,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:17:30,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 202 [2020-10-14 23:17:30,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:17:32,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:17:32,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:17:32,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:17:32,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:17:32,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:17:32,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:17:32,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:17:32,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:17:32,489 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:17:32,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:17:32,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:17:32,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:17:32,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:17:32,522 INFO L134 CoverageAnalysis]: Checked inductivity of 4950 backedges. 0 proven. 4950 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:17:32,523 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [563054262] [2020-10-14 23:17:32,523 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:17:32,523 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54] total 54 [2020-10-14 23:17:32,523 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168918345] [2020-10-14 23:17:32,523 INFO L459 AbstractCegarLoop]: Interpolant automaton has 54 states [2020-10-14 23:17:32,523 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:17:32,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2020-10-14 23:17:32,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1380, Invalid=1482, Unknown=0, NotChecked=0, Total=2862 [2020-10-14 23:17:32,524 INFO L87 Difference]: Start difference. First operand 214 states and 215 transitions. Second operand 54 states. [2020-10-14 23:17:32,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:17:32,786 INFO L93 Difference]: Finished difference Result 228 states and 230 transitions. [2020-10-14 23:17:32,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2020-10-14 23:17:32,786 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 212 [2020-10-14 23:17:32,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:17:32,788 INFO L225 Difference]: With dead ends: 228 [2020-10-14 23:17:32,789 INFO L226 Difference]: Without dead ends: 221 [2020-10-14 23:17:32,789 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1380, Invalid=1482, Unknown=0, NotChecked=0, Total=2862 [2020-10-14 23:17:32,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2020-10-14 23:17:32,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 218. [2020-10-14 23:17:32,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-10-14 23:17:32,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 219 transitions. [2020-10-14 23:17:32,796 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 219 transitions. Word has length 212 [2020-10-14 23:17:32,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:17:32,796 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 219 transitions. [2020-10-14 23:17:32,796 INFO L480 AbstractCegarLoop]: Interpolant automaton has 54 states. [2020-10-14 23:17:32,796 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 219 transitions. [2020-10-14 23:17:32,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2020-10-14 23:17:32,797 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:17:32,798 INFO L422 BasicCegarLoop]: trace histogram [51, 51, 51, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:17:32,798 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2020-10-14 23:17:32,798 INFO L427 AbstractCegarLoop]: === Iteration 54 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:17:32,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:17:32,798 INFO L82 PathProgramCache]: Analyzing trace with hash 213190050, now seen corresponding path program 42 times [2020-10-14 23:17:32,798 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:17:32,799 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1478751583] [2020-10-14 23:17:32,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:17:32,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:17:32,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:17:34,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:17:34,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 222 [2020-10-14 23:17:34,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:17:34,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1929 [2020-10-14 23:17:34,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:17:34,774 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:17:34,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 53 [2020-10-14 23:17:34,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:17:34,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 206 [2020-10-14 23:17:34,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:17:36,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:17:36,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:17:36,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:17:36,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:17:36,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:17:36,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:17:36,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:17:36,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:17:36,397 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:17:36,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:17:36,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:17:36,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:17:36,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:17:36,429 INFO L134 CoverageAnalysis]: Checked inductivity of 5151 backedges. 0 proven. 5151 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:17:36,429 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1478751583] [2020-10-14 23:17:36,429 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:17:36,429 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55] total 55 [2020-10-14 23:17:36,430 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087105499] [2020-10-14 23:17:36,430 INFO L459 AbstractCegarLoop]: Interpolant automaton has 55 states [2020-10-14 23:17:36,430 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:17:36,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2020-10-14 23:17:36,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1433, Invalid=1537, Unknown=0, NotChecked=0, Total=2970 [2020-10-14 23:17:36,431 INFO L87 Difference]: Start difference. First operand 218 states and 219 transitions. Second operand 55 states. [2020-10-14 23:17:36,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:17:36,697 INFO L93 Difference]: Finished difference Result 232 states and 234 transitions. [2020-10-14 23:17:36,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2020-10-14 23:17:36,698 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 216 [2020-10-14 23:17:36,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:17:36,700 INFO L225 Difference]: With dead ends: 232 [2020-10-14 23:17:36,701 INFO L226 Difference]: Without dead ends: 225 [2020-10-14 23:17:36,702 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1433, Invalid=1537, Unknown=0, NotChecked=0, Total=2970 [2020-10-14 23:17:36,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2020-10-14 23:17:36,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 222. [2020-10-14 23:17:36,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222 states. [2020-10-14 23:17:36,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 223 transitions. [2020-10-14 23:17:36,708 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 223 transitions. Word has length 216 [2020-10-14 23:17:36,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:17:36,708 INFO L479 AbstractCegarLoop]: Abstraction has 222 states and 223 transitions. [2020-10-14 23:17:36,708 INFO L480 AbstractCegarLoop]: Interpolant automaton has 55 states. [2020-10-14 23:17:36,708 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 223 transitions. [2020-10-14 23:17:36,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2020-10-14 23:17:36,709 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:17:36,710 INFO L422 BasicCegarLoop]: trace histogram [52, 52, 52, 52, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:17:36,710 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2020-10-14 23:17:36,710 INFO L427 AbstractCegarLoop]: === Iteration 55 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:17:36,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:17:36,710 INFO L82 PathProgramCache]: Analyzing trace with hash -791693015, now seen corresponding path program 43 times [2020-10-14 23:17:36,710 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:17:36,711 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1269970945] [2020-10-14 23:17:36,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:17:36,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:17:36,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:17:38,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:17:38,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-14 23:17:38,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:17:38,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2044 [2020-10-14 23:17:38,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:17:38,801 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:17:38,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 54 [2020-10-14 23:17:38,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:17:38,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 210 [2020-10-14 23:17:38,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:17:40,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:17:40,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:17:40,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:17:40,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:17:40,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:17:40,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:17:40,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:17:40,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:17:40,497 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:17:40,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:17:40,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:17:40,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:17:40,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:17:40,530 INFO L134 CoverageAnalysis]: Checked inductivity of 5356 backedges. 0 proven. 5356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:17:40,530 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1269970945] [2020-10-14 23:17:40,530 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:17:40,530 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56] total 56 [2020-10-14 23:17:40,531 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672448807] [2020-10-14 23:17:40,531 INFO L459 AbstractCegarLoop]: Interpolant automaton has 56 states [2020-10-14 23:17:40,531 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:17:40,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2020-10-14 23:17:40,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1487, Invalid=1593, Unknown=0, NotChecked=0, Total=3080 [2020-10-14 23:17:40,532 INFO L87 Difference]: Start difference. First operand 222 states and 223 transitions. Second operand 56 states. [2020-10-14 23:17:40,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:17:40,764 INFO L93 Difference]: Finished difference Result 236 states and 238 transitions. [2020-10-14 23:17:40,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2020-10-14 23:17:40,765 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 220 [2020-10-14 23:17:40,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:17:40,767 INFO L225 Difference]: With dead ends: 236 [2020-10-14 23:17:40,767 INFO L226 Difference]: Without dead ends: 229 [2020-10-14 23:17:40,767 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1487, Invalid=1593, Unknown=0, NotChecked=0, Total=3080 [2020-10-14 23:17:40,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2020-10-14 23:17:40,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 226. [2020-10-14 23:17:40,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-10-14 23:17:40,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 227 transitions. [2020-10-14 23:17:40,772 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 227 transitions. Word has length 220 [2020-10-14 23:17:40,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:17:40,772 INFO L479 AbstractCegarLoop]: Abstraction has 226 states and 227 transitions. [2020-10-14 23:17:40,773 INFO L480 AbstractCegarLoop]: Interpolant automaton has 56 states. [2020-10-14 23:17:40,773 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 227 transitions. [2020-10-14 23:17:40,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2020-10-14 23:17:40,774 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:17:40,774 INFO L422 BasicCegarLoop]: trace histogram [53, 53, 53, 53, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:17:40,774 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2020-10-14 23:17:40,774 INFO L427 AbstractCegarLoop]: === Iteration 56 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:17:40,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:17:40,774 INFO L82 PathProgramCache]: Analyzing trace with hash -641248976, now seen corresponding path program 44 times [2020-10-14 23:17:40,775 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:17:40,775 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [499201980] [2020-10-14 23:17:40,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:17:40,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:17:40,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:17:42,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:17:42,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 230 [2020-10-14 23:17:42,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:17:42,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2140 [2020-10-14 23:17:42,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:17:42,948 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:17:42,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 55 [2020-10-14 23:17:42,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:17:42,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 214 [2020-10-14 23:17:42,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:17:44,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:17:44,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:17:44,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:17:44,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:17:44,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:17:44,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:17:44,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:17:44,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:17:44,674 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:17:44,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:17:44,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:17:44,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:17:44,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:17:44,708 INFO L134 CoverageAnalysis]: Checked inductivity of 5565 backedges. 0 proven. 5565 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:17:44,709 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [499201980] [2020-10-14 23:17:44,709 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:17:44,709 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57] total 57 [2020-10-14 23:17:44,709 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95032033] [2020-10-14 23:17:44,710 INFO L459 AbstractCegarLoop]: Interpolant automaton has 57 states [2020-10-14 23:17:44,710 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:17:44,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2020-10-14 23:17:44,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1542, Invalid=1650, Unknown=0, NotChecked=0, Total=3192 [2020-10-14 23:17:44,711 INFO L87 Difference]: Start difference. First operand 226 states and 227 transitions. Second operand 57 states. [2020-10-14 23:17:44,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:17:44,954 INFO L93 Difference]: Finished difference Result 240 states and 242 transitions. [2020-10-14 23:17:44,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2020-10-14 23:17:44,954 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 224 [2020-10-14 23:17:44,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:17:44,956 INFO L225 Difference]: With dead ends: 240 [2020-10-14 23:17:44,956 INFO L226 Difference]: Without dead ends: 233 [2020-10-14 23:17:44,957 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1542, Invalid=1650, Unknown=0, NotChecked=0, Total=3192 [2020-10-14 23:17:44,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2020-10-14 23:17:44,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 230. [2020-10-14 23:17:44,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2020-10-14 23:17:44,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 231 transitions. [2020-10-14 23:17:44,961 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 231 transitions. Word has length 224 [2020-10-14 23:17:44,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:17:44,962 INFO L479 AbstractCegarLoop]: Abstraction has 230 states and 231 transitions. [2020-10-14 23:17:44,962 INFO L480 AbstractCegarLoop]: Interpolant automaton has 57 states. [2020-10-14 23:17:44,962 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 231 transitions. [2020-10-14 23:17:44,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2020-10-14 23:17:44,963 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:17:44,963 INFO L422 BasicCegarLoop]: trace histogram [54, 54, 54, 54, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:17:44,963 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2020-10-14 23:17:44,964 INFO L427 AbstractCegarLoop]: === Iteration 57 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:17:44,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:17:44,964 INFO L82 PathProgramCache]: Analyzing trace with hash -308965961, now seen corresponding path program 45 times [2020-10-14 23:17:44,964 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:17:44,964 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [604505628] [2020-10-14 23:17:44,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:17:45,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:17:45,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:17:47,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:17:47,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 234 [2020-10-14 23:17:47,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:17:47,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2260 [2020-10-14 23:17:47,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:17:47,266 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:17:47,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 56 [2020-10-14 23:17:47,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:17:47,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 218 [2020-10-14 23:17:47,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:17:49,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:17:49,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:17:49,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:17:49,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:17:49,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:17:49,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:17:49,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:17:49,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:17:49,080 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:17:49,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:17:49,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:17:49,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:17:49,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:17:49,116 INFO L134 CoverageAnalysis]: Checked inductivity of 5778 backedges. 0 proven. 5778 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:17:49,116 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [604505628] [2020-10-14 23:17:49,116 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:17:49,116 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58] total 58 [2020-10-14 23:17:49,117 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65905512] [2020-10-14 23:17:49,117 INFO L459 AbstractCegarLoop]: Interpolant automaton has 58 states [2020-10-14 23:17:49,117 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:17:49,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2020-10-14 23:17:49,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1598, Invalid=1708, Unknown=0, NotChecked=0, Total=3306 [2020-10-14 23:17:49,118 INFO L87 Difference]: Start difference. First operand 230 states and 231 transitions. Second operand 58 states. [2020-10-14 23:17:49,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:17:49,410 INFO L93 Difference]: Finished difference Result 244 states and 246 transitions. [2020-10-14 23:17:49,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2020-10-14 23:17:49,410 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 228 [2020-10-14 23:17:49,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:17:49,413 INFO L225 Difference]: With dead ends: 244 [2020-10-14 23:17:49,413 INFO L226 Difference]: Without dead ends: 237 [2020-10-14 23:17:49,414 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1598, Invalid=1708, Unknown=0, NotChecked=0, Total=3306 [2020-10-14 23:17:49,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2020-10-14 23:17:49,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 234. [2020-10-14 23:17:49,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234 states. [2020-10-14 23:17:49,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 235 transitions. [2020-10-14 23:17:49,419 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 235 transitions. Word has length 228 [2020-10-14 23:17:49,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:17:49,420 INFO L479 AbstractCegarLoop]: Abstraction has 234 states and 235 transitions. [2020-10-14 23:17:49,421 INFO L480 AbstractCegarLoop]: Interpolant automaton has 58 states. [2020-10-14 23:17:49,421 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 235 transitions. [2020-10-14 23:17:49,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2020-10-14 23:17:49,422 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:17:49,422 INFO L422 BasicCegarLoop]: trace histogram [55, 55, 55, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:17:49,423 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2020-10-14 23:17:49,423 INFO L427 AbstractCegarLoop]: === Iteration 58 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:17:49,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:17:49,423 INFO L82 PathProgramCache]: Analyzing trace with hash -1085002050, now seen corresponding path program 46 times [2020-10-14 23:17:49,423 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:17:49,424 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [407549390] [2020-10-14 23:17:49,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:17:49,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:17:49,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:17:51,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:17:51,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-10-14 23:17:51,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:17:51,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2276 [2020-10-14 23:17:51,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:17:51,746 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:17:51,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 57 [2020-10-14 23:17:51,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:17:51,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 222 [2020-10-14 23:17:51,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:17:53,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:17:53,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:17:53,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:17:53,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:17:53,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:17:53,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:17:53,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:17:53,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:17:53,584 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:17:53,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:17:53,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:17:53,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:17:53,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:17:53,621 INFO L134 CoverageAnalysis]: Checked inductivity of 5995 backedges. 0 proven. 5995 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:17:53,621 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [407549390] [2020-10-14 23:17:53,621 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:17:53,621 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59] total 59 [2020-10-14 23:17:53,621 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834807058] [2020-10-14 23:17:53,622 INFO L459 AbstractCegarLoop]: Interpolant automaton has 59 states [2020-10-14 23:17:53,622 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:17:53,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2020-10-14 23:17:53,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1655, Invalid=1767, Unknown=0, NotChecked=0, Total=3422 [2020-10-14 23:17:53,623 INFO L87 Difference]: Start difference. First operand 234 states and 235 transitions. Second operand 59 states. [2020-10-14 23:17:53,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:17:53,877 INFO L93 Difference]: Finished difference Result 248 states and 250 transitions. [2020-10-14 23:17:53,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2020-10-14 23:17:53,878 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 232 [2020-10-14 23:17:53,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:17:53,880 INFO L225 Difference]: With dead ends: 248 [2020-10-14 23:17:53,880 INFO L226 Difference]: Without dead ends: 241 [2020-10-14 23:17:53,881 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1655, Invalid=1767, Unknown=0, NotChecked=0, Total=3422 [2020-10-14 23:17:53,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2020-10-14 23:17:53,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 238. [2020-10-14 23:17:53,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2020-10-14 23:17:53,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 239 transitions. [2020-10-14 23:17:53,887 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 239 transitions. Word has length 232 [2020-10-14 23:17:53,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:17:53,887 INFO L479 AbstractCegarLoop]: Abstraction has 238 states and 239 transitions. [2020-10-14 23:17:53,887 INFO L480 AbstractCegarLoop]: Interpolant automaton has 59 states. [2020-10-14 23:17:53,887 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 239 transitions. [2020-10-14 23:17:53,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2020-10-14 23:17:53,888 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:17:53,889 INFO L422 BasicCegarLoop]: trace histogram [56, 56, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:17:53,889 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2020-10-14 23:17:53,889 INFO L427 AbstractCegarLoop]: === Iteration 59 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:17:53,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:17:53,889 INFO L82 PathProgramCache]: Analyzing trace with hash 1597830213, now seen corresponding path program 47 times [2020-10-14 23:17:53,890 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:17:53,890 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1327357370] [2020-10-14 23:17:53,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:17:53,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:17:53,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:17:56,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:17:56,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 242 [2020-10-14 23:17:56,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:17:56,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2448 [2020-10-14 23:17:56,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:17:56,385 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:17:56,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 58 [2020-10-14 23:17:56,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:17:56,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 226 [2020-10-14 23:17:56,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:17:58,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:17:58,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:17:58,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:17:58,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:17:58,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:17:58,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:17:58,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:17:58,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:17:58,332 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:17:58,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:17:58,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:17:58,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:17:58,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:17:58,369 INFO L134 CoverageAnalysis]: Checked inductivity of 6216 backedges. 0 proven. 6216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:17:58,369 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1327357370] [2020-10-14 23:17:58,369 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:17:58,369 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [60] total 60 [2020-10-14 23:17:58,369 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618553195] [2020-10-14 23:17:58,370 INFO L459 AbstractCegarLoop]: Interpolant automaton has 60 states [2020-10-14 23:17:58,370 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:17:58,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2020-10-14 23:17:58,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1713, Invalid=1827, Unknown=0, NotChecked=0, Total=3540 [2020-10-14 23:17:58,371 INFO L87 Difference]: Start difference. First operand 238 states and 239 transitions. Second operand 60 states. [2020-10-14 23:17:58,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:17:58,635 INFO L93 Difference]: Finished difference Result 252 states and 254 transitions. [2020-10-14 23:17:58,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2020-10-14 23:17:58,636 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 236 [2020-10-14 23:17:58,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:17:58,638 INFO L225 Difference]: With dead ends: 252 [2020-10-14 23:17:58,638 INFO L226 Difference]: Without dead ends: 245 [2020-10-14 23:17:58,639 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1713, Invalid=1827, Unknown=0, NotChecked=0, Total=3540 [2020-10-14 23:17:58,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2020-10-14 23:17:58,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 242. [2020-10-14 23:17:58,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2020-10-14 23:17:58,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 243 transitions. [2020-10-14 23:17:58,643 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 243 transitions. Word has length 236 [2020-10-14 23:17:58,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:17:58,643 INFO L479 AbstractCegarLoop]: Abstraction has 242 states and 243 transitions. [2020-10-14 23:17:58,643 INFO L480 AbstractCegarLoop]: Interpolant automaton has 60 states. [2020-10-14 23:17:58,644 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 243 transitions. [2020-10-14 23:17:58,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2020-10-14 23:17:58,645 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:17:58,645 INFO L422 BasicCegarLoop]: trace histogram [57, 57, 57, 57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:17:58,645 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2020-10-14 23:17:58,645 INFO L427 AbstractCegarLoop]: === Iteration 60 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:17:58,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:17:58,646 INFO L82 PathProgramCache]: Analyzing trace with hash -1431724468, now seen corresponding path program 48 times [2020-10-14 23:17:58,646 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:17:58,646 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1000198555] [2020-10-14 23:17:58,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:17:58,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:17:58,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:18:01,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:18:01,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 246 [2020-10-14 23:18:01,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:18:01,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2483 [2020-10-14 23:18:01,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:18:01,161 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:18:01,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 59 [2020-10-14 23:18:01,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:18:01,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 230 [2020-10-14 23:18:01,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:18:03,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:18:03,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:18:03,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:18:03,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:18:03,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:18:03,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:18:03,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:18:03,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:18:03,165 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:18:03,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:18:03,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:18:03,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:18:03,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:18:03,203 INFO L134 CoverageAnalysis]: Checked inductivity of 6441 backedges. 0 proven. 6441 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:18:03,203 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1000198555] [2020-10-14 23:18:03,203 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:18:03,203 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61] total 61 [2020-10-14 23:18:03,203 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173213956] [2020-10-14 23:18:03,204 INFO L459 AbstractCegarLoop]: Interpolant automaton has 61 states [2020-10-14 23:18:03,204 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:18:03,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2020-10-14 23:18:03,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1772, Invalid=1888, Unknown=0, NotChecked=0, Total=3660 [2020-10-14 23:18:03,205 INFO L87 Difference]: Start difference. First operand 242 states and 243 transitions. Second operand 61 states. [2020-10-14 23:18:03,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:18:03,559 INFO L93 Difference]: Finished difference Result 256 states and 258 transitions. [2020-10-14 23:18:03,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2020-10-14 23:18:03,559 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 240 [2020-10-14 23:18:03,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:18:03,561 INFO L225 Difference]: With dead ends: 256 [2020-10-14 23:18:03,561 INFO L226 Difference]: Without dead ends: 249 [2020-10-14 23:18:03,562 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1772, Invalid=1888, Unknown=0, NotChecked=0, Total=3660 [2020-10-14 23:18:03,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2020-10-14 23:18:03,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 246. [2020-10-14 23:18:03,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 246 states. [2020-10-14 23:18:03,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 247 transitions. [2020-10-14 23:18:03,568 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 247 transitions. Word has length 240 [2020-10-14 23:18:03,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:18:03,568 INFO L479 AbstractCegarLoop]: Abstraction has 246 states and 247 transitions. [2020-10-14 23:18:03,568 INFO L480 AbstractCegarLoop]: Interpolant automaton has 61 states. [2020-10-14 23:18:03,568 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 247 transitions. [2020-10-14 23:18:03,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2020-10-14 23:18:03,570 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:18:03,570 INFO L422 BasicCegarLoop]: trace histogram [58, 58, 58, 58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:18:03,570 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2020-10-14 23:18:03,570 INFO L427 AbstractCegarLoop]: === Iteration 61 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:18:03,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:18:03,571 INFO L82 PathProgramCache]: Analyzing trace with hash -1139544877, now seen corresponding path program 49 times [2020-10-14 23:18:03,571 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:18:03,571 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [900713135] [2020-10-14 23:18:03,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:18:03,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:18:03,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:18:06,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:18:06,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-14 23:18:06,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:18:06,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2503 [2020-10-14 23:18:06,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:18:06,125 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:18:06,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 60 [2020-10-14 23:18:06,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:18:06,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 234 [2020-10-14 23:18:06,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:18:08,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:18:08,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:18:08,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:18:08,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:18:08,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:18:08,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:18:08,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:18:08,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:18:08,202 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:18:08,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:18:08,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:18:08,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:18:08,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:18:08,240 INFO L134 CoverageAnalysis]: Checked inductivity of 6670 backedges. 0 proven. 6670 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:18:08,240 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [900713135] [2020-10-14 23:18:08,240 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:18:08,241 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [62] total 62 [2020-10-14 23:18:08,241 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461139138] [2020-10-14 23:18:08,241 INFO L459 AbstractCegarLoop]: Interpolant automaton has 62 states [2020-10-14 23:18:08,241 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:18:08,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2020-10-14 23:18:08,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1832, Invalid=1950, Unknown=0, NotChecked=0, Total=3782 [2020-10-14 23:18:08,243 INFO L87 Difference]: Start difference. First operand 246 states and 247 transitions. Second operand 62 states. [2020-10-14 23:18:08,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:18:08,560 INFO L93 Difference]: Finished difference Result 260 states and 262 transitions. [2020-10-14 23:18:08,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2020-10-14 23:18:08,561 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 244 [2020-10-14 23:18:08,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:18:08,563 INFO L225 Difference]: With dead ends: 260 [2020-10-14 23:18:08,563 INFO L226 Difference]: Without dead ends: 253 [2020-10-14 23:18:08,564 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1832, Invalid=1950, Unknown=0, NotChecked=0, Total=3782 [2020-10-14 23:18:08,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2020-10-14 23:18:08,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 250. [2020-10-14 23:18:08,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2020-10-14 23:18:08,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 251 transitions. [2020-10-14 23:18:08,570 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 251 transitions. Word has length 244 [2020-10-14 23:18:08,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:18:08,570 INFO L479 AbstractCegarLoop]: Abstraction has 250 states and 251 transitions. [2020-10-14 23:18:08,570 INFO L480 AbstractCegarLoop]: Interpolant automaton has 62 states. [2020-10-14 23:18:08,570 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 251 transitions. [2020-10-14 23:18:08,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2020-10-14 23:18:08,572 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:18:08,572 INFO L422 BasicCegarLoop]: trace histogram [59, 59, 59, 59, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:18:08,572 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2020-10-14 23:18:08,572 INFO L427 AbstractCegarLoop]: === Iteration 62 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:18:08,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:18:08,573 INFO L82 PathProgramCache]: Analyzing trace with hash 1528143834, now seen corresponding path program 50 times [2020-10-14 23:18:08,573 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:18:08,573 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [362657469] [2020-10-14 23:18:08,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:18:08,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:18:08,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:18:11,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:18:11,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 254 [2020-10-14 23:18:11,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:18:11,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2611 [2020-10-14 23:18:11,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:18:11,235 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:18:11,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 61 [2020-10-14 23:18:11,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:18:11,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 238 [2020-10-14 23:18:11,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:18:13,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:18:13,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:18:13,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:18:13,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:18:13,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:18:13,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:18:13,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:18:13,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:18:13,406 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:18:13,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:18:13,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:18:13,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:18:13,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:18:13,494 INFO L134 CoverageAnalysis]: Checked inductivity of 6903 backedges. 0 proven. 6903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:18:13,495 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [362657469] [2020-10-14 23:18:13,495 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:18:13,495 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63] total 63 [2020-10-14 23:18:13,495 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779813828] [2020-10-14 23:18:13,495 INFO L459 AbstractCegarLoop]: Interpolant automaton has 63 states [2020-10-14 23:18:13,495 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:18:13,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2020-10-14 23:18:13,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1893, Invalid=2013, Unknown=0, NotChecked=0, Total=3906 [2020-10-14 23:18:13,496 INFO L87 Difference]: Start difference. First operand 250 states and 251 transitions. Second operand 63 states. [2020-10-14 23:18:13,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:18:13,779 INFO L93 Difference]: Finished difference Result 264 states and 266 transitions. [2020-10-14 23:18:13,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2020-10-14 23:18:13,780 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 248 [2020-10-14 23:18:13,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:18:13,781 INFO L225 Difference]: With dead ends: 264 [2020-10-14 23:18:13,781 INFO L226 Difference]: Without dead ends: 257 [2020-10-14 23:18:13,782 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1893, Invalid=2013, Unknown=0, NotChecked=0, Total=3906 [2020-10-14 23:18:13,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2020-10-14 23:18:13,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 254. [2020-10-14 23:18:13,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2020-10-14 23:18:13,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 255 transitions. [2020-10-14 23:18:13,788 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 255 transitions. Word has length 248 [2020-10-14 23:18:13,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:18:13,788 INFO L479 AbstractCegarLoop]: Abstraction has 254 states and 255 transitions. [2020-10-14 23:18:13,788 INFO L480 AbstractCegarLoop]: Interpolant automaton has 63 states. [2020-10-14 23:18:13,788 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 255 transitions. [2020-10-14 23:18:13,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2020-10-14 23:18:13,789 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:18:13,790 INFO L422 BasicCegarLoop]: trace histogram [60, 60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:18:13,790 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2020-10-14 23:18:13,790 INFO L427 AbstractCegarLoop]: === Iteration 63 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:18:13,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:18:13,790 INFO L82 PathProgramCache]: Analyzing trace with hash 1818785633, now seen corresponding path program 51 times [2020-10-14 23:18:13,790 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:18:13,791 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1946902220] [2020-10-14 23:18:13,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:18:13,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:18:13,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:18:16,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:18:16,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 258 [2020-10-14 23:18:16,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:18:16,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2754 [2020-10-14 23:18:16,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:18:16,603 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:18:16,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 62 [2020-10-14 23:18:16,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:18:16,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 242 [2020-10-14 23:18:16,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:18:18,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:18:18,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:18:18,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:18:18,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:18:18,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:18:18,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:18:18,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:18:18,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:18:18,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:18:18,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:18:18,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:18:18,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:18:18,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:18:18,891 INFO L134 CoverageAnalysis]: Checked inductivity of 7140 backedges. 0 proven. 7140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:18:18,891 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1946902220] [2020-10-14 23:18:18,891 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:18:18,891 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64] total 64 [2020-10-14 23:18:18,891 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570009813] [2020-10-14 23:18:18,892 INFO L459 AbstractCegarLoop]: Interpolant automaton has 64 states [2020-10-14 23:18:18,892 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:18:18,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2020-10-14 23:18:18,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1955, Invalid=2077, Unknown=0, NotChecked=0, Total=4032 [2020-10-14 23:18:18,893 INFO L87 Difference]: Start difference. First operand 254 states and 255 transitions. Second operand 64 states. [2020-10-14 23:18:19,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:18:19,211 INFO L93 Difference]: Finished difference Result 268 states and 270 transitions. [2020-10-14 23:18:19,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2020-10-14 23:18:19,212 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 252 [2020-10-14 23:18:19,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:18:19,214 INFO L225 Difference]: With dead ends: 268 [2020-10-14 23:18:19,214 INFO L226 Difference]: Without dead ends: 261 [2020-10-14 23:18:19,215 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1955, Invalid=2077, Unknown=0, NotChecked=0, Total=4032 [2020-10-14 23:18:19,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2020-10-14 23:18:19,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 258. [2020-10-14 23:18:19,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2020-10-14 23:18:19,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 259 transitions. [2020-10-14 23:18:19,220 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 259 transitions. Word has length 252 [2020-10-14 23:18:19,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:18:19,220 INFO L479 AbstractCegarLoop]: Abstraction has 258 states and 259 transitions. [2020-10-14 23:18:19,220 INFO L480 AbstractCegarLoop]: Interpolant automaton has 64 states. [2020-10-14 23:18:19,220 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 259 transitions. [2020-10-14 23:18:19,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2020-10-14 23:18:19,221 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:18:19,221 INFO L422 BasicCegarLoop]: trace histogram [61, 61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:18:19,221 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2020-10-14 23:18:19,221 INFO L427 AbstractCegarLoop]: === Iteration 64 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:18:19,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:18:19,222 INFO L82 PathProgramCache]: Analyzing trace with hash 1642476392, now seen corresponding path program 52 times [2020-10-14 23:18:19,222 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:18:19,222 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2053647293] [2020-10-14 23:18:19,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:18:19,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:18:19,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:18:22,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:18:22,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 262 [2020-10-14 23:18:22,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:18:22,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2811 [2020-10-14 23:18:22,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:18:22,082 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:18:22,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 63 [2020-10-14 23:18:22,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:18:22,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 246 [2020-10-14 23:18:22,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:18:24,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:18:24,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:18:24,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:18:24,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:18:24,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:18:24,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:18:24,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:18:24,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:18:24,400 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:18:24,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:18:24,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:18:24,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:18:24,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:18:24,443 INFO L134 CoverageAnalysis]: Checked inductivity of 7381 backedges. 0 proven. 7381 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:18:24,443 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2053647293] [2020-10-14 23:18:24,443 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:18:24,443 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65] total 65 [2020-10-14 23:18:24,444 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466005238] [2020-10-14 23:18:24,444 INFO L459 AbstractCegarLoop]: Interpolant automaton has 65 states [2020-10-14 23:18:24,444 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:18:24,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2020-10-14 23:18:24,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2018, Invalid=2142, Unknown=0, NotChecked=0, Total=4160 [2020-10-14 23:18:24,445 INFO L87 Difference]: Start difference. First operand 258 states and 259 transitions. Second operand 65 states. [2020-10-14 23:18:24,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:18:24,800 INFO L93 Difference]: Finished difference Result 272 states and 274 transitions. [2020-10-14 23:18:24,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-10-14 23:18:24,801 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 256 [2020-10-14 23:18:24,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:18:24,803 INFO L225 Difference]: With dead ends: 272 [2020-10-14 23:18:24,803 INFO L226 Difference]: Without dead ends: 265 [2020-10-14 23:18:24,803 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=2018, Invalid=2142, Unknown=0, NotChecked=0, Total=4160 [2020-10-14 23:18:24,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2020-10-14 23:18:24,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 262. [2020-10-14 23:18:24,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2020-10-14 23:18:24,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 263 transitions. [2020-10-14 23:18:24,809 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 263 transitions. Word has length 256 [2020-10-14 23:18:24,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:18:24,809 INFO L479 AbstractCegarLoop]: Abstraction has 262 states and 263 transitions. [2020-10-14 23:18:24,809 INFO L480 AbstractCegarLoop]: Interpolant automaton has 65 states. [2020-10-14 23:18:24,809 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 263 transitions. [2020-10-14 23:18:24,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2020-10-14 23:18:24,810 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:18:24,811 INFO L422 BasicCegarLoop]: trace histogram [62, 62, 62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:18:24,811 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2020-10-14 23:18:24,811 INFO L427 AbstractCegarLoop]: === Iteration 65 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:18:24,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:18:24,811 INFO L82 PathProgramCache]: Analyzing trace with hash -1433889809, now seen corresponding path program 53 times [2020-10-14 23:18:24,811 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:18:24,812 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1257021776] [2020-10-14 23:18:24,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:18:24,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:18:24,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:18:27,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:18:27,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 266 [2020-10-14 23:18:27,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:18:27,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3047 [2020-10-14 23:18:27,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:18:27,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:18:27,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 64 [2020-10-14 23:18:27,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:18:27,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 250 [2020-10-14 23:18:27,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:18:30,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:18:30,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:18:30,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:18:30,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:18:30,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:18:30,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:18:30,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:18:30,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:18:30,274 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:18:30,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:18:30,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:18:30,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:18:30,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:18:30,317 INFO L134 CoverageAnalysis]: Checked inductivity of 7626 backedges. 0 proven. 7626 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:18:30,318 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1257021776] [2020-10-14 23:18:30,318 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:18:30,318 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [66] total 66 [2020-10-14 23:18:30,318 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615608608] [2020-10-14 23:18:30,319 INFO L459 AbstractCegarLoop]: Interpolant automaton has 66 states [2020-10-14 23:18:30,319 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:18:30,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2020-10-14 23:18:30,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2082, Invalid=2208, Unknown=0, NotChecked=0, Total=4290 [2020-10-14 23:18:30,320 INFO L87 Difference]: Start difference. First operand 262 states and 263 transitions. Second operand 66 states. [2020-10-14 23:18:30,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:18:30,657 INFO L93 Difference]: Finished difference Result 276 states and 278 transitions. [2020-10-14 23:18:30,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2020-10-14 23:18:30,658 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 260 [2020-10-14 23:18:30,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:18:30,660 INFO L225 Difference]: With dead ends: 276 [2020-10-14 23:18:30,660 INFO L226 Difference]: Without dead ends: 269 [2020-10-14 23:18:30,661 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=2082, Invalid=2208, Unknown=0, NotChecked=0, Total=4290 [2020-10-14 23:18:30,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2020-10-14 23:18:30,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 266. [2020-10-14 23:18:30,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-10-14 23:18:30,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 267 transitions. [2020-10-14 23:18:30,667 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 267 transitions. Word has length 260 [2020-10-14 23:18:30,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:18:30,667 INFO L479 AbstractCegarLoop]: Abstraction has 266 states and 267 transitions. [2020-10-14 23:18:30,667 INFO L480 AbstractCegarLoop]: Interpolant automaton has 66 states. [2020-10-14 23:18:30,667 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 267 transitions. [2020-10-14 23:18:30,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2020-10-14 23:18:30,669 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:18:30,669 INFO L422 BasicCegarLoop]: trace histogram [63, 63, 63, 63, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:18:30,669 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2020-10-14 23:18:30,669 INFO L427 AbstractCegarLoop]: === Iteration 66 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:18:30,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:18:30,670 INFO L82 PathProgramCache]: Analyzing trace with hash 577329398, now seen corresponding path program 54 times [2020-10-14 23:18:30,670 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:18:30,670 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1533012481] [2020-10-14 23:18:30,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:18:30,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:18:30,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:18:33,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:18:33,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 270 [2020-10-14 23:18:33,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:18:33,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3236 [2020-10-14 23:18:33,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:18:33,966 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:18:33,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 65 [2020-10-14 23:18:33,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:18:33,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 254 [2020-10-14 23:18:33,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:18:36,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:18:36,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:18:36,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:18:36,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:18:36,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:18:36,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:18:36,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:18:36,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:18:36,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:18:36,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:18:36,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:18:36,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:18:36,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:18:36,502 INFO L134 CoverageAnalysis]: Checked inductivity of 7875 backedges. 0 proven. 7875 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:18:36,502 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1533012481] [2020-10-14 23:18:36,502 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:18:36,502 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [67] total 67 [2020-10-14 23:18:36,502 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129768949] [2020-10-14 23:18:36,503 INFO L459 AbstractCegarLoop]: Interpolant automaton has 67 states [2020-10-14 23:18:36,503 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:18:36,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2020-10-14 23:18:36,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2147, Invalid=2275, Unknown=0, NotChecked=0, Total=4422 [2020-10-14 23:18:36,504 INFO L87 Difference]: Start difference. First operand 266 states and 267 transitions. Second operand 67 states. [2020-10-14 23:18:36,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:18:36,822 INFO L93 Difference]: Finished difference Result 280 states and 282 transitions. [2020-10-14 23:18:36,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2020-10-14 23:18:36,823 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 264 [2020-10-14 23:18:36,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:18:36,825 INFO L225 Difference]: With dead ends: 280 [2020-10-14 23:18:36,825 INFO L226 Difference]: Without dead ends: 273 [2020-10-14 23:18:36,825 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=2147, Invalid=2275, Unknown=0, NotChecked=0, Total=4422 [2020-10-14 23:18:36,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2020-10-14 23:18:36,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 270. [2020-10-14 23:18:36,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 270 states. [2020-10-14 23:18:36,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 271 transitions. [2020-10-14 23:18:36,832 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 271 transitions. Word has length 264 [2020-10-14 23:18:36,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:18:36,832 INFO L479 AbstractCegarLoop]: Abstraction has 270 states and 271 transitions. [2020-10-14 23:18:36,832 INFO L480 AbstractCegarLoop]: Interpolant automaton has 67 states. [2020-10-14 23:18:36,833 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 271 transitions. [2020-10-14 23:18:36,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2020-10-14 23:18:36,834 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:18:36,834 INFO L422 BasicCegarLoop]: trace histogram [64, 64, 64, 64, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:18:36,834 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2020-10-14 23:18:36,834 INFO L427 AbstractCegarLoop]: === Iteration 67 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:18:36,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:18:36,835 INFO L82 PathProgramCache]: Analyzing trace with hash -2101198211, now seen corresponding path program 55 times [2020-10-14 23:18:36,835 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:18:36,835 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2110389589] [2020-10-14 23:18:36,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:18:36,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:18:36,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:18:39,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:18:39,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-14 23:18:39,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:18:39,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3092 [2020-10-14 23:18:39,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:18:39,993 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:18:39,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 66 [2020-10-14 23:18:39,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:18:39,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 258 [2020-10-14 23:18:39,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:18:42,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:18:42,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:18:42,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:18:42,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:18:42,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:18:42,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:18:42,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:18:42,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:18:42,575 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:18:42,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:18:42,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:18:42,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:18:42,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:18:42,622 INFO L134 CoverageAnalysis]: Checked inductivity of 8128 backedges. 0 proven. 8128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:18:42,623 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2110389589] [2020-10-14 23:18:42,623 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:18:42,623 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [68] total 68 [2020-10-14 23:18:42,623 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199918887] [2020-10-14 23:18:42,623 INFO L459 AbstractCegarLoop]: Interpolant automaton has 68 states [2020-10-14 23:18:42,624 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:18:42,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2020-10-14 23:18:42,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2213, Invalid=2343, Unknown=0, NotChecked=0, Total=4556 [2020-10-14 23:18:42,624 INFO L87 Difference]: Start difference. First operand 270 states and 271 transitions. Second operand 68 states. [2020-10-14 23:18:42,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:18:42,963 INFO L93 Difference]: Finished difference Result 284 states and 286 transitions. [2020-10-14 23:18:42,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2020-10-14 23:18:42,964 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 268 [2020-10-14 23:18:42,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:18:42,966 INFO L225 Difference]: With dead ends: 284 [2020-10-14 23:18:42,966 INFO L226 Difference]: Without dead ends: 277 [2020-10-14 23:18:42,967 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=2213, Invalid=2343, Unknown=0, NotChecked=0, Total=4556 [2020-10-14 23:18:42,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2020-10-14 23:18:42,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 274. [2020-10-14 23:18:42,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 274 states. [2020-10-14 23:18:42,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 275 transitions. [2020-10-14 23:18:42,972 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 275 transitions. Word has length 268 [2020-10-14 23:18:42,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:18:42,973 INFO L479 AbstractCegarLoop]: Abstraction has 274 states and 275 transitions. [2020-10-14 23:18:42,973 INFO L480 AbstractCegarLoop]: Interpolant automaton has 68 states. [2020-10-14 23:18:42,973 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 275 transitions. [2020-10-14 23:18:42,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2020-10-14 23:18:42,974 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:18:42,975 INFO L422 BasicCegarLoop]: trace histogram [65, 65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:18:42,975 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2020-10-14 23:18:42,975 INFO L427 AbstractCegarLoop]: === Iteration 68 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:18:42,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:18:42,975 INFO L82 PathProgramCache]: Analyzing trace with hash -772992892, now seen corresponding path program 56 times [2020-10-14 23:18:42,976 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:18:42,976 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [642516172] [2020-10-14 23:18:42,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:18:43,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:18:43,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:18:46,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:18:46,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 278 [2020-10-14 23:18:46,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:18:46,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3194 [2020-10-14 23:18:46,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:18:46,221 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:18:46,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 67 [2020-10-14 23:18:46,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:18:46,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 262 [2020-10-14 23:18:46,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:18:48,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:18:48,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:18:48,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:18:48,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:18:48,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:18:48,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:18:48,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:18:48,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:18:48,884 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:18:48,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:18:48,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:18:48,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:18:48,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:18:48,932 INFO L134 CoverageAnalysis]: Checked inductivity of 8385 backedges. 0 proven. 8385 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:18:48,932 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [642516172] [2020-10-14 23:18:48,932 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:18:48,933 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [69] total 69 [2020-10-14 23:18:48,933 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945517421] [2020-10-14 23:18:48,933 INFO L459 AbstractCegarLoop]: Interpolant automaton has 69 states [2020-10-14 23:18:48,933 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:18:48,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2020-10-14 23:18:48,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2280, Invalid=2412, Unknown=0, NotChecked=0, Total=4692 [2020-10-14 23:18:48,934 INFO L87 Difference]: Start difference. First operand 274 states and 275 transitions. Second operand 69 states. [2020-10-14 23:18:49,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:18:49,306 INFO L93 Difference]: Finished difference Result 288 states and 290 transitions. [2020-10-14 23:18:49,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2020-10-14 23:18:49,307 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 272 [2020-10-14 23:18:49,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:18:49,309 INFO L225 Difference]: With dead ends: 288 [2020-10-14 23:18:49,309 INFO L226 Difference]: Without dead ends: 281 [2020-10-14 23:18:49,310 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=2280, Invalid=2412, Unknown=0, NotChecked=0, Total=4692 [2020-10-14 23:18:49,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2020-10-14 23:18:49,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 278. [2020-10-14 23:18:49,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 278 states. [2020-10-14 23:18:49,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 279 transitions. [2020-10-14 23:18:49,314 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 279 transitions. Word has length 272 [2020-10-14 23:18:49,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:18:49,315 INFO L479 AbstractCegarLoop]: Abstraction has 278 states and 279 transitions. [2020-10-14 23:18:49,315 INFO L480 AbstractCegarLoop]: Interpolant automaton has 69 states. [2020-10-14 23:18:49,315 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 279 transitions. [2020-10-14 23:18:49,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2020-10-14 23:18:49,316 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:18:49,316 INFO L422 BasicCegarLoop]: trace histogram [66, 66, 66, 66, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:18:49,316 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2020-10-14 23:18:49,316 INFO L427 AbstractCegarLoop]: === Iteration 69 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:18:49,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:18:49,317 INFO L82 PathProgramCache]: Analyzing trace with hash -748453109, now seen corresponding path program 57 times [2020-10-14 23:18:49,317 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:18:49,317 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [261447635] [2020-10-14 23:18:49,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:18:49,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:18:49,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:18:52,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:18:52,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 282 [2020-10-14 23:18:52,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:18:52,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3413 [2020-10-14 23:18:52,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:18:52,792 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:18:52,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 68 [2020-10-14 23:18:52,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:18:52,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 266 [2020-10-14 23:18:52,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:18:55,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:18:55,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:18:55,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:18:55,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:18:55,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:18:55,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:18:55,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:18:55,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:18:55,532 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:18:55,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:18:55,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:18:55,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:18:55,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:18:55,581 INFO L134 CoverageAnalysis]: Checked inductivity of 8646 backedges. 0 proven. 8646 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:18:55,581 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [261447635] [2020-10-14 23:18:55,581 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:18:55,581 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [70] total 70 [2020-10-14 23:18:55,582 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005347125] [2020-10-14 23:18:55,582 INFO L459 AbstractCegarLoop]: Interpolant automaton has 70 states [2020-10-14 23:18:55,582 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:18:55,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2020-10-14 23:18:55,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2348, Invalid=2482, Unknown=0, NotChecked=0, Total=4830 [2020-10-14 23:18:55,583 INFO L87 Difference]: Start difference. First operand 278 states and 279 transitions. Second operand 70 states. [2020-10-14 23:18:55,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:18:55,957 INFO L93 Difference]: Finished difference Result 292 states and 294 transitions. [2020-10-14 23:18:55,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2020-10-14 23:18:55,958 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 276 [2020-10-14 23:18:55,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:18:55,960 INFO L225 Difference]: With dead ends: 292 [2020-10-14 23:18:55,960 INFO L226 Difference]: Without dead ends: 285 [2020-10-14 23:18:55,961 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=2348, Invalid=2482, Unknown=0, NotChecked=0, Total=4830 [2020-10-14 23:18:55,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2020-10-14 23:18:55,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 282. [2020-10-14 23:18:55,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 282 states. [2020-10-14 23:18:55,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 283 transitions. [2020-10-14 23:18:55,966 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 283 transitions. Word has length 276 [2020-10-14 23:18:55,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:18:55,966 INFO L479 AbstractCegarLoop]: Abstraction has 282 states and 283 transitions. [2020-10-14 23:18:55,966 INFO L480 AbstractCegarLoop]: Interpolant automaton has 70 states. [2020-10-14 23:18:55,967 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 283 transitions. [2020-10-14 23:18:55,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2020-10-14 23:18:55,968 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:18:55,968 INFO L422 BasicCegarLoop]: trace histogram [67, 67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:18:55,968 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2020-10-14 23:18:55,968 INFO L427 AbstractCegarLoop]: === Iteration 70 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:18:55,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:18:55,969 INFO L82 PathProgramCache]: Analyzing trace with hash 2009029138, now seen corresponding path program 58 times [2020-10-14 23:18:55,969 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:18:55,969 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [416046082] [2020-10-14 23:18:55,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:18:56,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:18:56,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:18:59,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:18:59,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 286 [2020-10-14 23:18:59,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:18:59,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3567 [2020-10-14 23:18:59,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:18:59,604 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:18:59,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 69 [2020-10-14 23:18:59,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:18:59,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 270 [2020-10-14 23:18:59,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:19:02,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:19:02,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:19:02,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:19:02,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:19:02,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:19:02,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:19:02,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:19:02,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:19:02,457 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:19:02,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:19:02,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:19:02,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:19:02,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:19:02,508 INFO L134 CoverageAnalysis]: Checked inductivity of 8911 backedges. 0 proven. 8911 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:19:02,508 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [416046082] [2020-10-14 23:19:02,508 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:19:02,508 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [71] total 71 [2020-10-14 23:19:02,508 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109063382] [2020-10-14 23:19:02,509 INFO L459 AbstractCegarLoop]: Interpolant automaton has 71 states [2020-10-14 23:19:02,509 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:19:02,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2020-10-14 23:19:02,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2417, Invalid=2553, Unknown=0, NotChecked=0, Total=4970 [2020-10-14 23:19:02,509 INFO L87 Difference]: Start difference. First operand 282 states and 283 transitions. Second operand 71 states. [2020-10-14 23:19:02,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:19:02,885 INFO L93 Difference]: Finished difference Result 296 states and 298 transitions. [2020-10-14 23:19:02,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2020-10-14 23:19:02,886 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 280 [2020-10-14 23:19:02,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:19:02,888 INFO L225 Difference]: With dead ends: 296 [2020-10-14 23:19:02,888 INFO L226 Difference]: Without dead ends: 289 [2020-10-14 23:19:02,889 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=2417, Invalid=2553, Unknown=0, NotChecked=0, Total=4970 [2020-10-14 23:19:02,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2020-10-14 23:19:02,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 286. [2020-10-14 23:19:02,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 286 states. [2020-10-14 23:19:02,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 287 transitions. [2020-10-14 23:19:02,894 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 287 transitions. Word has length 280 [2020-10-14 23:19:02,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:19:02,895 INFO L479 AbstractCegarLoop]: Abstraction has 286 states and 287 transitions. [2020-10-14 23:19:02,895 INFO L480 AbstractCegarLoop]: Interpolant automaton has 71 states. [2020-10-14 23:19:02,895 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 287 transitions. [2020-10-14 23:19:02,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2020-10-14 23:19:02,896 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:19:02,897 INFO L422 BasicCegarLoop]: trace histogram [68, 68, 68, 68, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:19:02,897 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2020-10-14 23:19:02,897 INFO L427 AbstractCegarLoop]: === Iteration 71 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:19:02,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:19:02,897 INFO L82 PathProgramCache]: Analyzing trace with hash 1287280025, now seen corresponding path program 59 times [2020-10-14 23:19:02,897 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:19:02,898 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1992349007] [2020-10-14 23:19:02,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:19:02,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:19:02,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:19:06,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:19:06,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 290 [2020-10-14 23:19:06,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:19:06,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3482 [2020-10-14 23:19:06,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:19:06,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:19:06,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 70 [2020-10-14 23:19:06,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:19:06,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 274 [2020-10-14 23:19:06,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:19:09,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:19:09,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:19:09,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:19:09,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:19:09,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:19:09,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:19:09,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:19:09,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:19:09,308 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:19:09,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:19:09,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:19:09,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:19:09,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:19:09,364 INFO L134 CoverageAnalysis]: Checked inductivity of 9180 backedges. 0 proven. 9180 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:19:09,364 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1992349007] [2020-10-14 23:19:09,364 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:19:09,364 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [72] total 72 [2020-10-14 23:19:09,365 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062352140] [2020-10-14 23:19:09,365 INFO L459 AbstractCegarLoop]: Interpolant automaton has 72 states [2020-10-14 23:19:09,365 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:19:09,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2020-10-14 23:19:09,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2487, Invalid=2625, Unknown=0, NotChecked=0, Total=5112 [2020-10-14 23:19:09,366 INFO L87 Difference]: Start difference. First operand 286 states and 287 transitions. Second operand 72 states. [2020-10-14 23:19:09,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:19:09,700 INFO L93 Difference]: Finished difference Result 300 states and 302 transitions. [2020-10-14 23:19:09,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2020-10-14 23:19:09,701 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 284 [2020-10-14 23:19:09,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:19:09,703 INFO L225 Difference]: With dead ends: 300 [2020-10-14 23:19:09,703 INFO L226 Difference]: Without dead ends: 293 [2020-10-14 23:19:09,704 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=2487, Invalid=2625, Unknown=0, NotChecked=0, Total=5112 [2020-10-14 23:19:09,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2020-10-14 23:19:09,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 290. [2020-10-14 23:19:09,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 290 states. [2020-10-14 23:19:09,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 291 transitions. [2020-10-14 23:19:09,708 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 291 transitions. Word has length 284 [2020-10-14 23:19:09,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:19:09,709 INFO L479 AbstractCegarLoop]: Abstraction has 290 states and 291 transitions. [2020-10-14 23:19:09,709 INFO L480 AbstractCegarLoop]: Interpolant automaton has 72 states. [2020-10-14 23:19:09,709 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 291 transitions. [2020-10-14 23:19:09,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2020-10-14 23:19:09,710 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:19:09,711 INFO L422 BasicCegarLoop]: trace histogram [69, 69, 69, 69, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:19:09,711 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2020-10-14 23:19:09,711 INFO L427 AbstractCegarLoop]: === Iteration 72 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:19:09,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:19:09,711 INFO L82 PathProgramCache]: Analyzing trace with hash -315738720, now seen corresponding path program 60 times [2020-10-14 23:19:09,712 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:19:09,712 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [617414069] [2020-10-14 23:19:09,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:19:09,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:19:09,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:19:13,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:19:13,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 294 [2020-10-14 23:19:13,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:19:13,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3682 [2020-10-14 23:19:13,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:19:13,457 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:19:13,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 71 [2020-10-14 23:19:13,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:19:13,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 278 [2020-10-14 23:19:13,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:19:16,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:19:16,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:19:16,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:19:16,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:19:16,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:19:16,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:19:16,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:19:16,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:19:16,439 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:19:16,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:19:16,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:19:16,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:19:16,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:19:16,493 INFO L134 CoverageAnalysis]: Checked inductivity of 9453 backedges. 0 proven. 9453 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:19:16,493 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [617414069] [2020-10-14 23:19:16,493 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:19:16,493 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [73] total 73 [2020-10-14 23:19:16,494 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946713004] [2020-10-14 23:19:16,494 INFO L459 AbstractCegarLoop]: Interpolant automaton has 73 states [2020-10-14 23:19:16,494 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:19:16,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2020-10-14 23:19:16,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2558, Invalid=2698, Unknown=0, NotChecked=0, Total=5256 [2020-10-14 23:19:16,495 INFO L87 Difference]: Start difference. First operand 290 states and 291 transitions. Second operand 73 states. [2020-10-14 23:19:16,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:19:16,920 INFO L93 Difference]: Finished difference Result 304 states and 306 transitions. [2020-10-14 23:19:16,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2020-10-14 23:19:16,921 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 288 [2020-10-14 23:19:16,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:19:16,923 INFO L225 Difference]: With dead ends: 304 [2020-10-14 23:19:16,923 INFO L226 Difference]: Without dead ends: 297 [2020-10-14 23:19:16,924 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=2558, Invalid=2698, Unknown=0, NotChecked=0, Total=5256 [2020-10-14 23:19:16,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2020-10-14 23:19:16,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 294. [2020-10-14 23:19:16,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 294 states. [2020-10-14 23:19:16,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 295 transitions. [2020-10-14 23:19:16,928 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 295 transitions. Word has length 288 [2020-10-14 23:19:16,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:19:16,930 INFO L479 AbstractCegarLoop]: Abstraction has 294 states and 295 transitions. [2020-10-14 23:19:16,930 INFO L480 AbstractCegarLoop]: Interpolant automaton has 73 states. [2020-10-14 23:19:16,930 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 295 transitions. [2020-10-14 23:19:16,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2020-10-14 23:19:16,931 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:19:16,931 INFO L422 BasicCegarLoop]: trace histogram [70, 70, 70, 70, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:19:16,932 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2020-10-14 23:19:16,932 INFO L427 AbstractCegarLoop]: === Iteration 73 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:19:16,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:19:16,932 INFO L82 PathProgramCache]: Analyzing trace with hash 1897183783, now seen corresponding path program 61 times [2020-10-14 23:19:16,932 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:19:16,932 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1547771949] [2020-10-14 23:19:16,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:19:16,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:19:17,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:19:20,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:19:20,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 298 [2020-10-14 23:19:20,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:19:20,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3770 [2020-10-14 23:19:20,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:19:20,748 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:19:20,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 72 [2020-10-14 23:19:20,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:19:20,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 282 [2020-10-14 23:19:20,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:19:23,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:19:23,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:19:23,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:19:23,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:19:23,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:19:23,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:19:23,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:19:23,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:19:23,810 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:19:23,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:19:23,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:19:23,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:19:23,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:19:23,867 INFO L134 CoverageAnalysis]: Checked inductivity of 9730 backedges. 0 proven. 9730 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:19:23,868 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1547771949] [2020-10-14 23:19:23,868 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:19:23,868 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [74] total 74 [2020-10-14 23:19:23,868 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947856157] [2020-10-14 23:19:23,869 INFO L459 AbstractCegarLoop]: Interpolant automaton has 74 states [2020-10-14 23:19:23,869 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:19:23,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2020-10-14 23:19:23,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2630, Invalid=2772, Unknown=0, NotChecked=0, Total=5402 [2020-10-14 23:19:23,870 INFO L87 Difference]: Start difference. First operand 294 states and 295 transitions. Second operand 74 states. [2020-10-14 23:19:24,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:19:24,240 INFO L93 Difference]: Finished difference Result 308 states and 310 transitions. [2020-10-14 23:19:24,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2020-10-14 23:19:24,241 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 292 [2020-10-14 23:19:24,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:19:24,243 INFO L225 Difference]: With dead ends: 308 [2020-10-14 23:19:24,243 INFO L226 Difference]: Without dead ends: 301 [2020-10-14 23:19:24,244 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=2630, Invalid=2772, Unknown=0, NotChecked=0, Total=5402 [2020-10-14 23:19:24,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2020-10-14 23:19:24,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 298. [2020-10-14 23:19:24,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-10-14 23:19:24,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 299 transitions. [2020-10-14 23:19:24,249 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 299 transitions. Word has length 292 [2020-10-14 23:19:24,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:19:24,250 INFO L479 AbstractCegarLoop]: Abstraction has 298 states and 299 transitions. [2020-10-14 23:19:24,250 INFO L480 AbstractCegarLoop]: Interpolant automaton has 74 states. [2020-10-14 23:19:24,250 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 299 transitions. [2020-10-14 23:19:24,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2020-10-14 23:19:24,251 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:19:24,252 INFO L422 BasicCegarLoop]: trace histogram [71, 71, 71, 71, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:19:24,252 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2020-10-14 23:19:24,252 INFO L427 AbstractCegarLoop]: === Iteration 74 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:19:24,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:19:24,252 INFO L82 PathProgramCache]: Analyzing trace with hash -578313426, now seen corresponding path program 62 times [2020-10-14 23:19:24,252 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:19:24,253 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [572723903] [2020-10-14 23:19:24,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:19:24,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:19:24,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:19:28,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:19:28,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 302 [2020-10-14 23:19:28,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:19:28,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3872 [2020-10-14 23:19:28,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:19:28,174 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:19:28,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 73 [2020-10-14 23:19:28,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:19:28,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 286 [2020-10-14 23:19:28,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:19:31,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:19:31,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:19:31,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:19:31,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:19:31,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:19:31,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:19:31,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:19:31,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:19:31,395 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:19:31,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:19:31,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:19:31,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:19:31,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:19:31,455 INFO L134 CoverageAnalysis]: Checked inductivity of 10011 backedges. 0 proven. 10011 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:19:31,455 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [572723903] [2020-10-14 23:19:31,455 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:19:31,456 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [75] total 75 [2020-10-14 23:19:31,456 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188047382] [2020-10-14 23:19:31,456 INFO L459 AbstractCegarLoop]: Interpolant automaton has 75 states [2020-10-14 23:19:31,456 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:19:31,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2020-10-14 23:19:31,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2703, Invalid=2847, Unknown=0, NotChecked=0, Total=5550 [2020-10-14 23:19:31,457 INFO L87 Difference]: Start difference. First operand 298 states and 299 transitions. Second operand 75 states. [2020-10-14 23:19:31,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:19:31,937 INFO L93 Difference]: Finished difference Result 312 states and 314 transitions. [2020-10-14 23:19:31,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2020-10-14 23:19:31,938 INFO L78 Accepts]: Start accepts. Automaton has 75 states. Word has length 296 [2020-10-14 23:19:31,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:19:31,940 INFO L225 Difference]: With dead ends: 312 [2020-10-14 23:19:31,940 INFO L226 Difference]: Without dead ends: 305 [2020-10-14 23:19:31,940 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=2703, Invalid=2847, Unknown=0, NotChecked=0, Total=5550 [2020-10-14 23:19:31,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2020-10-14 23:19:31,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 302. [2020-10-14 23:19:31,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 302 states. [2020-10-14 23:19:31,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 303 transitions. [2020-10-14 23:19:31,945 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 303 transitions. Word has length 296 [2020-10-14 23:19:31,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:19:31,945 INFO L479 AbstractCegarLoop]: Abstraction has 302 states and 303 transitions. [2020-10-14 23:19:31,945 INFO L480 AbstractCegarLoop]: Interpolant automaton has 75 states. [2020-10-14 23:19:31,945 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 303 transitions. [2020-10-14 23:19:31,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2020-10-14 23:19:31,946 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:19:31,947 INFO L422 BasicCegarLoop]: trace histogram [72, 72, 72, 72, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:19:31,947 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2020-10-14 23:19:31,947 INFO L427 AbstractCegarLoop]: === Iteration 75 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:19:31,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:19:31,947 INFO L82 PathProgramCache]: Analyzing trace with hash -1799311179, now seen corresponding path program 63 times [2020-10-14 23:19:31,948 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:19:31,948 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [219998864] [2020-10-14 23:19:31,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:19:31,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:19:32,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:19:35,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:19:35,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 306 [2020-10-14 23:19:35,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:19:35,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3977 [2020-10-14 23:19:35,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:19:35,971 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:19:35,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 74 [2020-10-14 23:19:35,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:19:35,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 290 [2020-10-14 23:19:35,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:19:39,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:19:39,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:19:39,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:19:39,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:19:39,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:19:39,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:19:39,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:19:39,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:19:39,236 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:19:39,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:19:39,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:19:39,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:19:39,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:19:39,294 INFO L134 CoverageAnalysis]: Checked inductivity of 10296 backedges. 0 proven. 10296 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:19:39,294 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [219998864] [2020-10-14 23:19:39,294 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:19:39,294 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [76] total 76 [2020-10-14 23:19:39,294 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900810011] [2020-10-14 23:19:39,295 INFO L459 AbstractCegarLoop]: Interpolant automaton has 76 states [2020-10-14 23:19:39,295 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:19:39,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2020-10-14 23:19:39,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2777, Invalid=2923, Unknown=0, NotChecked=0, Total=5700 [2020-10-14 23:19:39,296 INFO L87 Difference]: Start difference. First operand 302 states and 303 transitions. Second operand 76 states.