/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --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/loops-crafted-1/nested_delay_nd.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 05:32:28,803 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 05:32:28,806 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 05:32:28,844 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 05:32:28,844 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 05:32:28,852 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 05:32:28,854 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 05:32:28,857 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 05:32:28,860 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 05:32:28,862 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 05:32:28,863 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 05:32:28,864 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 05:32:28,864 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 05:32:28,867 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 05:32:28,869 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 05:32:28,870 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 05:32:28,872 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 05:32:28,873 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 05:32:28,875 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 05:32:28,882 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 05:32:28,884 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 05:32:28,885 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 05:32:28,886 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 05:32:28,887 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 05:32:28,903 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 05:32:28,904 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 05:32:28,904 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 05:32:28,905 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 05:32:28,905 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 05:32:28,906 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 05:32:28,906 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 05:32:28,907 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 05:32:28,909 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 05:32:28,910 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 05:32:28,911 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 05:32:28,911 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 05:32:28,912 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 05:32:28,912 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 05:32:28,915 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 05:32:28,915 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 05:32:28,916 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 05:32:28,917 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 05:32:28,953 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 05:32:28,954 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 05:32:28,956 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 05:32:28,956 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 05:32:28,956 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 05:32:28,956 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 05:32:28,957 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 05:32:28,957 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 05:32:28,957 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 05:32:28,957 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 05:32:28,958 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 05:32:28,958 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 05:32:28,958 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 05:32:28,959 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 05:32:28,959 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 05:32:28,959 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 05:32:28,959 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 05:32:28,960 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 05:32:28,960 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 05:32:28,960 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 05:32:28,960 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 05:32:28,960 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 05:32:28,961 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 05:32:28,961 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 05:32:28,961 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 05:32:28,961 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 05:32:28,961 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 05:32:28,962 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 05:32:28,962 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 05:32:28,962 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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 05:32:29,271 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 05:32:29,289 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 05:32:29,295 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 05:32:29,296 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 05:32:29,297 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 05:32:29,298 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/nested_delay_nd.c [2020-10-14 05:32:29,362 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fc98398b4/6aadf440216c47e79db657fa9d46b6ad/FLAGd72796ba6 [2020-10-14 05:32:29,833 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 05:32:29,834 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops-crafted-1/nested_delay_nd.c [2020-10-14 05:32:29,841 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fc98398b4/6aadf440216c47e79db657fa9d46b6ad/FLAGd72796ba6 [2020-10-14 05:32:30,212 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fc98398b4/6aadf440216c47e79db657fa9d46b6ad [2020-10-14 05:32:30,225 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 05:32:30,227 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 05:32:30,232 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 05:32:30,232 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 05:32:30,235 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 05:32:30,237 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 05:32:30" (1/1) ... [2020-10-14 05:32:30,240 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60f5cdb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:32:30, skipping insertion in model container [2020-10-14 05:32:30,240 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 05:32:30" (1/1) ... [2020-10-14 05:32:30,249 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 05:32:30,270 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 05:32:30,465 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 05:32:30,470 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 05:32:30,487 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 05:32:30,499 INFO L208 MainTranslator]: Completed translation [2020-10-14 05:32:30,500 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:32:30 WrapperNode [2020-10-14 05:32:30,500 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 05:32:30,500 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 05:32:30,501 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 05:32:30,501 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 05:32:30,510 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:32:30" (1/1) ... [2020-10-14 05:32:30,510 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:32:30" (1/1) ... [2020-10-14 05:32:30,593 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:32:30" (1/1) ... [2020-10-14 05:32:30,594 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:32:30" (1/1) ... [2020-10-14 05:32:30,598 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:32:30" (1/1) ... [2020-10-14 05:32:30,606 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:32:30" (1/1) ... [2020-10-14 05:32:30,607 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:32:30" (1/1) ... [2020-10-14 05:32:30,609 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 05:32:30,610 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 05:32:30,610 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 05:32:30,610 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 05:32:30,611 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:32:30" (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 05:32:30,669 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 05:32:30,670 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 05:32:30,670 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-14 05:32:30,670 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-14 05:32:30,670 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 05:32:30,670 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 05:32:30,671 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 05:32:30,671 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-14 05:32:30,671 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 05:32:30,671 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-14 05:32:30,671 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 05:32:30,671 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 05:32:30,672 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 05:32:30,903 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 05:32:30,906 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-14 05:32:30,916 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 05:32:30 BoogieIcfgContainer [2020-10-14 05:32:30,917 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 05:32:30,919 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 05:32:30,919 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 05:32:30,932 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 05:32:30,932 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 05:32:30" (1/3) ... [2020-10-14 05:32:30,936 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6efb1910 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 05:32:30, skipping insertion in model container [2020-10-14 05:32:30,936 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:32:30" (2/3) ... [2020-10-14 05:32:30,937 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6efb1910 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 05:32:30, skipping insertion in model container [2020-10-14 05:32:30,937 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 05:32:30" (3/3) ... [2020-10-14 05:32:30,941 INFO L109 eAbstractionObserver]: Analyzing ICFG nested_delay_nd.c [2020-10-14 05:32:30,969 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 05:32:30,982 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 05:32:31,014 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 05:32:31,042 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 05:32:31,043 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 05:32:31,043 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 05:32:31,043 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 05:32:31,043 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 05:32:31,043 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 05:32:31,043 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 05:32:31,043 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 05:32:31,059 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2020-10-14 05:32:31,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-14 05:32:31,064 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:32:31,065 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:32:31,065 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:32:31,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:32:31,070 INFO L82 PathProgramCache]: Analyzing trace with hash -1722053448, now seen corresponding path program 1 times [2020-10-14 05:32:31,078 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:32:31,078 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1845966189] [2020-10-14 05:32:31,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:32:31,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:32:31,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:31,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:31,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:31,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:31,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:31,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:32:31,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-14 05:32:31,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 05:32:31,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 404 [2020-10-14 05:32:31,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:32:31,583 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:32:31,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:32:31,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 05:32:31,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:32:31,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 05:32:31,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:32:31,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:32:31,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:31,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:32:31,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:32:31,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:32:31,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 05:32:31,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:32:31,634 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:32:31,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:32:31,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:32:31,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:32:31,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:32:31,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:32:31,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:32:31,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:31,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:31,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:32:31,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:32:31,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:32:31,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 05:32:31,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:32:31,647 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:32:31,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:32:31,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:32:31,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:32:31,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:32:31,654 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 05:32:31,655 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1845966189] [2020-10-14 05:32:31,657 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:32:31,657 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 05:32:31,658 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506197562] [2020-10-14 05:32:31,663 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 05:32:31,663 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:32:31,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 05:32:31,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:32:31,681 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 3 states. [2020-10-14 05:32:31,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:32:31,768 INFO L93 Difference]: Finished difference Result 50 states and 71 transitions. [2020-10-14 05:32:31,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 05:32:31,771 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-10-14 05:32:31,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:32:31,779 INFO L225 Difference]: With dead ends: 50 [2020-10-14 05:32:31,780 INFO L226 Difference]: Without dead ends: 27 [2020-10-14 05:32:31,783 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:32:31,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-10-14 05:32:31,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-10-14 05:32:31,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-14 05:32:31,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 33 transitions. [2020-10-14 05:32:31,824 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 33 transitions. Word has length 21 [2020-10-14 05:32:31,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:32:31,825 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 33 transitions. [2020-10-14 05:32:31,825 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 05:32:31,825 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 33 transitions. [2020-10-14 05:32:31,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-14 05:32:31,826 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:32:31,827 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:32:31,827 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 05:32:31,827 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:32:31,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:32:31,828 INFO L82 PathProgramCache]: Analyzing trace with hash -4936667, now seen corresponding path program 1 times [2020-10-14 05:32:31,828 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:32:31,829 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1922952850] [2020-10-14 05:32:31,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:32:31,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:32:31,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:31,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:31,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:31,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:32,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:32:32,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-14 05:32:32,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 05:32:32,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 187 [2020-10-14 05:32:32,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:32:32,030 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:32:32,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:32:32,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-14 05:32:32,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 05:32:32,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:32:32,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:32:32,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:32:32,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:32,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:32:32,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:32:32,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:32:32,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:32:32,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:32:32,071 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:32:32,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:32:32,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:32:32,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:32:32,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:32:32,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:32:32,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:32:32,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:32,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:32:32,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:32:32,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:32:32,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:32:32,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:32:32,079 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:32:32,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:32:32,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:32:32,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:32:32,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:32:32,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:32:32,084 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1922952850] [2020-10-14 05:32:32,084 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:32:32,084 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 05:32:32,085 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723582032] [2020-10-14 05:32:32,086 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 05:32:32,087 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:32:32,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 05:32:32,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 05:32:32,088 INFO L87 Difference]: Start difference. First operand 27 states and 33 transitions. Second operand 4 states. [2020-10-14 05:32:32,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:32:32,198 INFO L93 Difference]: Finished difference Result 51 states and 70 transitions. [2020-10-14 05:32:32,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 05:32:32,198 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2020-10-14 05:32:32,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:32:32,201 INFO L225 Difference]: With dead ends: 51 [2020-10-14 05:32:32,202 INFO L226 Difference]: Without dead ends: 36 [2020-10-14 05:32:32,203 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 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 05:32:32,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-14 05:32:32,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 32. [2020-10-14 05:32:32,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-14 05:32:32,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 40 transitions. [2020-10-14 05:32:32,215 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 40 transitions. Word has length 21 [2020-10-14 05:32:32,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:32:32,215 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 40 transitions. [2020-10-14 05:32:32,215 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 05:32:32,215 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 40 transitions. [2020-10-14 05:32:32,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-14 05:32:32,216 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:32:32,216 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:32:32,217 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 05:32:32,217 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:32:32,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:32:32,217 INFO L82 PathProgramCache]: Analyzing trace with hash 561006405, now seen corresponding path program 1 times [2020-10-14 05:32:32,218 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:32:32,218 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1129089929] [2020-10-14 05:32:32,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:32:32,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:32:32,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:32,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:32,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:32:32,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-14 05:32:32,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:32:32,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 189 [2020-10-14 05:32:32,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:32:32,419 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:32:32,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 05:32:32,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 05:32:32,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 05:32:32,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:32:32,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:32:32,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:32:32,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:32,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:32:32,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:32:32,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:32:32,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 05:32:32,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:32:32,463 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:32:32,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:32:32,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:32:32,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 05:32:32,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:32:32,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:32:32,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:32:32,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:32,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:32:32,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:32:32,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:32:32,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 05:32:32,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:32:32,476 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:32:32,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:32:32,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:32:32,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 05:32:32,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:32:32,479 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 05:32:32,480 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1129089929] [2020-10-14 05:32:32,480 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:32:32,480 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 05:32:32,481 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215205296] [2020-10-14 05:32:32,483 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 05:32:32,484 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:32:32,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 05:32:32,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 05:32:32,486 INFO L87 Difference]: Start difference. First operand 32 states and 40 transitions. Second operand 5 states. [2020-10-14 05:32:32,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:32:32,642 INFO L93 Difference]: Finished difference Result 57 states and 75 transitions. [2020-10-14 05:32:32,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 05:32:32,646 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2020-10-14 05:32:32,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:32:32,648 INFO L225 Difference]: With dead ends: 57 [2020-10-14 05:32:32,648 INFO L226 Difference]: Without dead ends: 37 [2020-10-14 05:32:32,649 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 05:32:32,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-10-14 05:32:32,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 33. [2020-10-14 05:32:32,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-14 05:32:32,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 41 transitions. [2020-10-14 05:32:32,664 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 41 transitions. Word has length 22 [2020-10-14 05:32:32,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:32:32,665 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 41 transitions. [2020-10-14 05:32:32,666 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 05:32:32,667 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 41 transitions. [2020-10-14 05:32:32,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-14 05:32:32,668 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:32:32,668 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:32:32,669 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 05:32:32,669 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:32:32,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:32:32,670 INFO L82 PathProgramCache]: Analyzing trace with hash 1709050809, now seen corresponding path program 1 times [2020-10-14 05:32:32,670 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:32:32,671 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [424903846] [2020-10-14 05:32:32,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:32:32,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:32:32,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:32,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:32,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:32,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:32,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:32,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:33,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:33,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:33,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:32:33,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-14 05:32:33,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 05:32:33,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 870 [2020-10-14 05:32:33,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:32:33,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:32:33,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:32:33,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-14 05:32:33,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 05:32:33,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:32:33,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:32:33,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:32:33,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:33,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:32:33,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:32:33,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:32:33,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 05:32:33,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:32:33,604 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:32:33,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:32:33,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:32:33,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:32:33,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:32:33,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:32:33,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:32:33,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:33,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:32:33,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:32:33,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:32:33,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:32:33,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:32:33,615 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:32:33,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:32:33,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:32:33,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:32:33,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:32:33,620 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 05:32:33,622 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [424903846] [2020-10-14 05:32:33,623 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:32:33,624 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 05:32:33,624 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644257819] [2020-10-14 05:32:33,625 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 05:32:33,626 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:32:33,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 05:32:33,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 05:32:33,628 INFO L87 Difference]: Start difference. First operand 33 states and 41 transitions. Second operand 4 states. [2020-10-14 05:32:33,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:32:33,760 INFO L93 Difference]: Finished difference Result 59 states and 79 transitions. [2020-10-14 05:32:33,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 05:32:33,762 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2020-10-14 05:32:33,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:32:33,763 INFO L225 Difference]: With dead ends: 59 [2020-10-14 05:32:33,763 INFO L226 Difference]: Without dead ends: 38 [2020-10-14 05:32:33,764 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 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 05:32:33,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-14 05:32:33,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 33. [2020-10-14 05:32:33,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-14 05:32:33,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 41 transitions. [2020-10-14 05:32:33,781 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 41 transitions. Word has length 24 [2020-10-14 05:32:33,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:32:33,781 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 41 transitions. [2020-10-14 05:32:33,782 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 05:32:33,782 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 41 transitions. [2020-10-14 05:32:33,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-14 05:32:33,783 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:32:33,783 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:32:33,783 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 05:32:33,784 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:32:33,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:32:33,784 INFO L82 PathProgramCache]: Analyzing trace with hash -810909125, now seen corresponding path program 1 times [2020-10-14 05:32:33,785 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:32:33,785 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [548523597] [2020-10-14 05:32:33,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:32:33,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:32:33,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:33,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:33,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:33,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:33,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:34,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:32:34,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-14 05:32:34,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 05:32:34,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 503 [2020-10-14 05:32:34,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:32:34,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:32:34,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 05:32:34,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 05:32:34,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 05:32:34,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:32:34,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:32:34,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:32:34,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:34,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:32:34,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:32:34,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:32:34,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 05:32:34,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:32:34,351 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:32:34,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:32:34,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:32:34,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 05:32:34,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:32:34,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:32:34,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:32:34,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:34,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:32:34,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:32:34,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:32:34,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 05:32:34,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:32:34,363 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:32:34,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:32:34,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:32:34,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 05:32:34,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:32:34,367 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 05:32:34,368 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [548523597] [2020-10-14 05:32:34,369 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:32:34,369 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 05:32:34,369 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078561945] [2020-10-14 05:32:34,370 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 05:32:34,370 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:32:34,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 05:32:34,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-14 05:32:34,371 INFO L87 Difference]: Start difference. First operand 33 states and 41 transitions. Second operand 6 states. [2020-10-14 05:32:34,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:32:34,532 INFO L93 Difference]: Finished difference Result 64 states and 85 transitions. [2020-10-14 05:32:34,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 05:32:34,533 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2020-10-14 05:32:34,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:32:34,534 INFO L225 Difference]: With dead ends: 64 [2020-10-14 05:32:34,534 INFO L226 Difference]: Without dead ends: 43 [2020-10-14 05:32:34,535 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-14 05:32:34,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-10-14 05:32:34,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 38. [2020-10-14 05:32:34,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-14 05:32:34,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 47 transitions. [2020-10-14 05:32:34,542 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 47 transitions. Word has length 24 [2020-10-14 05:32:34,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:32:34,543 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 47 transitions. [2020-10-14 05:32:34,543 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 05:32:34,543 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 47 transitions. [2020-10-14 05:32:34,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-14 05:32:34,544 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:32:34,544 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:32:34,544 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 05:32:34,545 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:32:34,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:32:34,545 INFO L82 PathProgramCache]: Analyzing trace with hash 2018773543, now seen corresponding path program 2 times [2020-10-14 05:32:34,545 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:32:34,546 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1077852310] [2020-10-14 05:32:34,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:32:34,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:32:34,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:34,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:34,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:34,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:34,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:34,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:34,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:34,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:35,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:35,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:35,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:32:35,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-14 05:32:35,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 05:32:35,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1246 [2020-10-14 05:32:35,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:32:35,802 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:32:35,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 05:32:35,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 05:32:35,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 05:32:35,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:32:35,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:32:35,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:32:35,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:35,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:32:35,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:32:35,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:32:35,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:32:35,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:32:35,842 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:32:35,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:32:35,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:32:35,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:32:35,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:32:35,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:32:35,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:32:35,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:35,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:32:35,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:32:35,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:32:35,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:32:35,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:32:35,847 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:32:35,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:32:35,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:32:35,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:32:35,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:32:35,851 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-14 05:32:35,851 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1077852310] [2020-10-14 05:32:35,851 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:32:35,852 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 05:32:35,852 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427204427] [2020-10-14 05:32:35,852 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 05:32:35,852 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:32:35,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 05:32:35,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 05:32:35,853 INFO L87 Difference]: Start difference. First operand 38 states and 47 transitions. Second operand 6 states. [2020-10-14 05:32:36,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:32:36,033 INFO L93 Difference]: Finished difference Result 86 states and 111 transitions. [2020-10-14 05:32:36,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 05:32:36,034 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 27 [2020-10-14 05:32:36,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:32:36,037 INFO L225 Difference]: With dead ends: 86 [2020-10-14 05:32:36,037 INFO L226 Difference]: Without dead ends: 60 [2020-10-14 05:32:36,038 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-14 05:32:36,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-14 05:32:36,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 37. [2020-10-14 05:32:36,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-14 05:32:36,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 45 transitions. [2020-10-14 05:32:36,047 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 45 transitions. Word has length 27 [2020-10-14 05:32:36,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:32:36,047 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 45 transitions. [2020-10-14 05:32:36,048 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 05:32:36,048 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 45 transitions. [2020-10-14 05:32:36,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-14 05:32:36,049 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:32:36,049 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:32:36,050 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 05:32:36,050 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:32:36,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:32:36,050 INFO L82 PathProgramCache]: Analyzing trace with hash 490206727, now seen corresponding path program 1 times [2020-10-14 05:32:36,051 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:32:36,051 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1241143702] [2020-10-14 05:32:36,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:32:36,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:32:36,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:36,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:36,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:36,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:36,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:36,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:36,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:36,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:36,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:36,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:36,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:37,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:32:37,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-14 05:32:37,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 05:32:37,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1580 [2020-10-14 05:32:37,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:32:37,641 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:32:37,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:32:37,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-14 05:32:37,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 05:32:37,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:32:37,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:32:37,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:32:37,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:37,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:32:37,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:32:37,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:32:37,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:32:37,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:32:37,671 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:32:37,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:32:37,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:32:37,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:32:37,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:32:37,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:32:37,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:32:37,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:37,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:32:37,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:32:37,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:32:37,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:32:37,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:32:37,676 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:32:37,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:32:37,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:32:37,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:32:37,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:32:37,680 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-14 05:32:37,680 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1241143702] [2020-10-14 05:32:37,680 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:32:37,680 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 05:32:37,681 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937344637] [2020-10-14 05:32:37,681 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 05:32:37,681 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:32:37,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 05:32:37,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 05:32:37,682 INFO L87 Difference]: Start difference. First operand 37 states and 45 transitions. Second operand 4 states. [2020-10-14 05:32:37,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:32:37,764 INFO L93 Difference]: Finished difference Result 67 states and 86 transitions. [2020-10-14 05:32:37,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 05:32:37,765 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 28 [2020-10-14 05:32:37,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:32:37,766 INFO L225 Difference]: With dead ends: 67 [2020-10-14 05:32:37,766 INFO L226 Difference]: Without dead ends: 42 [2020-10-14 05:32:37,766 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 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 05:32:37,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-14 05:32:37,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 39. [2020-10-14 05:32:37,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-14 05:32:37,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 47 transitions. [2020-10-14 05:32:37,773 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 47 transitions. Word has length 28 [2020-10-14 05:32:37,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:32:37,773 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 47 transitions. [2020-10-14 05:32:37,773 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 05:32:37,774 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 47 transitions. [2020-10-14 05:32:37,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-14 05:32:37,775 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:32:37,775 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:32:37,775 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 05:32:37,776 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:32:37,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:32:37,776 INFO L82 PathProgramCache]: Analyzing trace with hash 547465029, now seen corresponding path program 1 times [2020-10-14 05:32:37,777 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:32:37,777 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1662378141] [2020-10-14 05:32:37,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:32:37,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:32:37,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:37,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:37,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:37,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:37,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:37,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:38,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:38,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:38,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:38,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:32:38,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-14 05:32:38,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 05:32:38,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1117 [2020-10-14 05:32:38,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:32:38,902 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:32:38,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 05:32:38,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 05:32:38,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 05:32:38,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:32:38,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:32:38,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:32:38,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:38,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:32:38,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:32:38,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:32:38,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:32:38,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:32:38,951 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:32:38,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:32:38,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:32:38,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 05:32:38,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:32:38,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:32:38,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:32:38,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:38,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:32:38,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:32:38,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:32:38,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:32:38,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:32:38,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:32:38,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:32:38,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:32:38,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 05:32:38,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:32:38,962 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-14 05:32:38,963 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1662378141] [2020-10-14 05:32:38,963 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:32:38,963 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 05:32:38,964 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287395037] [2020-10-14 05:32:38,964 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 05:32:38,964 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:32:38,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 05:32:38,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-14 05:32:38,965 INFO L87 Difference]: Start difference. First operand 39 states and 47 transitions. Second operand 7 states. [2020-10-14 05:32:39,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:32:39,191 INFO L93 Difference]: Finished difference Result 93 states and 117 transitions. [2020-10-14 05:32:39,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 05:32:39,191 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 28 [2020-10-14 05:32:39,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:32:39,192 INFO L225 Difference]: With dead ends: 93 [2020-10-14 05:32:39,193 INFO L226 Difference]: Without dead ends: 66 [2020-10-14 05:32:39,193 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2020-10-14 05:32:39,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-14 05:32:39,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 62. [2020-10-14 05:32:39,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-10-14 05:32:39,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 78 transitions. [2020-10-14 05:32:39,202 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 78 transitions. Word has length 28 [2020-10-14 05:32:39,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:32:39,203 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 78 transitions. [2020-10-14 05:32:39,203 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 05:32:39,203 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 78 transitions. [2020-10-14 05:32:39,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-14 05:32:39,204 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:32:39,204 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:32:39,204 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 05:32:39,205 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:32:39,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:32:39,205 INFO L82 PathProgramCache]: Analyzing trace with hash -261881597, now seen corresponding path program 1 times [2020-10-14 05:32:39,205 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:32:39,206 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1137964269] [2020-10-14 05:32:39,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:32:39,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:32:39,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:39,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:39,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:39,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:39,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:32:39,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-14 05:32:39,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 05:32:39,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 455 [2020-10-14 05:32:39,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:32:39,669 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:32:39,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 05:32:39,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 05:32:39,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 05:32:39,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:32:39,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:32:39,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:32:39,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:39,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:32:39,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:32:39,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:32:39,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:32:39,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:32:39,712 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:32:39,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:32:39,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:32:39,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 05:32:39,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:32:39,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:32:39,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:32:39,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:39,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:32:39,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:32:39,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:32:39,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:32:39,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:32:39,720 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:32:39,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:32:39,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:32:39,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 05:32:39,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:32:39,723 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:32:39,724 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1137964269] [2020-10-14 05:32:39,724 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:32:39,724 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 05:32:39,725 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103802826] [2020-10-14 05:32:39,725 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 05:32:39,725 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:32:39,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 05:32:39,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 05:32:39,726 INFO L87 Difference]: Start difference. First operand 62 states and 78 transitions. Second operand 7 states. [2020-10-14 05:32:39,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:32:39,899 INFO L93 Difference]: Finished difference Result 132 states and 175 transitions. [2020-10-14 05:32:39,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 05:32:39,900 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 28 [2020-10-14 05:32:39,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:32:39,901 INFO L225 Difference]: With dead ends: 132 [2020-10-14 05:32:39,901 INFO L226 Difference]: Without dead ends: 82 [2020-10-14 05:32:39,902 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-14 05:32:39,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-10-14 05:32:39,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 73. [2020-10-14 05:32:39,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-14 05:32:39,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 92 transitions. [2020-10-14 05:32:39,911 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 92 transitions. Word has length 28 [2020-10-14 05:32:39,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:32:39,911 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 92 transitions. [2020-10-14 05:32:39,911 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 05:32:39,912 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 92 transitions. [2020-10-14 05:32:39,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-14 05:32:39,913 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:32:39,913 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:32:39,913 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 05:32:39,913 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:32:39,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:32:39,914 INFO L82 PathProgramCache]: Analyzing trace with hash -1745898769, now seen corresponding path program 2 times [2020-10-14 05:32:39,914 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:32:39,914 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [139143618] [2020-10-14 05:32:39,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:32:39,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:32:39,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:39,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:40,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:40,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:32:40,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-14 05:32:40,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 05:32:40,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 469 [2020-10-14 05:32:40,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:32:40,391 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:32:40,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 05:32:40,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 05:32:40,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 05:32:40,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:32:40,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:32:40,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:32:40,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:40,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:32:40,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:32:40,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:32:40,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:32:40,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:32:40,445 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:32:40,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:32:40,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:32:40,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 05:32:40,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:32:40,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:32:40,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:32:40,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:40,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:32:40,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:32:40,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:32:40,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:32:40,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:32:40,452 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:32:40,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:32:40,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:32:40,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 05:32:40,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:32:40,456 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:32:40,457 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [139143618] [2020-10-14 05:32:40,457 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:32:40,457 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 05:32:40,457 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806166619] [2020-10-14 05:32:40,458 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 05:32:40,458 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:32:40,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 05:32:40,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-14 05:32:40,459 INFO L87 Difference]: Start difference. First operand 73 states and 92 transitions. Second operand 8 states. [2020-10-14 05:32:40,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:32:40,661 INFO L93 Difference]: Finished difference Result 155 states and 205 transitions. [2020-10-14 05:32:40,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 05:32:40,662 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2020-10-14 05:32:40,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:32:40,663 INFO L225 Difference]: With dead ends: 155 [2020-10-14 05:32:40,663 INFO L226 Difference]: Without dead ends: 94 [2020-10-14 05:32:40,664 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-14 05:32:40,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-10-14 05:32:40,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 85. [2020-10-14 05:32:40,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-14 05:32:40,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 108 transitions. [2020-10-14 05:32:40,673 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 108 transitions. Word has length 31 [2020-10-14 05:32:40,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:32:40,673 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 108 transitions. [2020-10-14 05:32:40,674 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 05:32:40,674 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 108 transitions. [2020-10-14 05:32:40,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-14 05:32:40,675 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:32:40,675 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:32:40,675 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 05:32:40,675 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:32:40,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:32:40,676 INFO L82 PathProgramCache]: Analyzing trace with hash 291875203, now seen corresponding path program 3 times [2020-10-14 05:32:40,676 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:32:40,676 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1383091741] [2020-10-14 05:32:40,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:32:40,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:32:40,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:40,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:40,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:41,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:32:41,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-14 05:32:41,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 05:32:41,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 722 [2020-10-14 05:32:41,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:32:41,406 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:32:41,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 05:32:41,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 05:32:41,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 05:32:41,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:32:41,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:32:41,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:32:41,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:41,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:32:41,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:32:41,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:32:41,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:32:41,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:32:41,472 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:32:41,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:32:41,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:32:41,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 05:32:41,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:32:41,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:32:41,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:32:41,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:41,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:32:41,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:32:41,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:32:41,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:32:41,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:32:41,481 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:32:41,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:32:41,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:32:41,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 05:32:41,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:32:41,485 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:32:41,485 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1383091741] [2020-10-14 05:32:41,486 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:32:41,486 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 05:32:41,486 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24861456] [2020-10-14 05:32:41,487 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 05:32:41,487 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:32:41,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 05:32:41,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-14 05:32:41,488 INFO L87 Difference]: Start difference. First operand 85 states and 108 transitions. Second operand 9 states. [2020-10-14 05:32:41,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:32:41,706 INFO L93 Difference]: Finished difference Result 179 states and 237 transitions. [2020-10-14 05:32:41,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 05:32:41,707 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 34 [2020-10-14 05:32:41,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:32:41,708 INFO L225 Difference]: With dead ends: 179 [2020-10-14 05:32:41,708 INFO L226 Difference]: Without dead ends: 106 [2020-10-14 05:32:41,709 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2020-10-14 05:32:41,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-10-14 05:32:41,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 97. [2020-10-14 05:32:41,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-14 05:32:41,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 124 transitions. [2020-10-14 05:32:41,717 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 124 transitions. Word has length 34 [2020-10-14 05:32:41,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:32:41,718 INFO L479 AbstractCegarLoop]: Abstraction has 97 states and 124 transitions. [2020-10-14 05:32:41,718 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 05:32:41,718 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 124 transitions. [2020-10-14 05:32:41,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-14 05:32:41,719 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:32:41,719 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:32:41,719 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 05:32:41,719 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:32:41,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:32:41,720 INFO L82 PathProgramCache]: Analyzing trace with hash -1746453905, now seen corresponding path program 4 times [2020-10-14 05:32:41,720 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:32:41,720 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1899035899] [2020-10-14 05:32:41,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:32:41,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:32:41,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:41,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:41,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:42,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:32:42,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-14 05:32:42,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 05:32:42,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1060 [2020-10-14 05:32:42,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:32:42,790 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:32:42,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 05:32:42,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 05:32:42,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 05:32:42,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:32:42,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:32:42,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:32:42,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:42,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:32:42,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:32:42,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:32:42,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:32:42,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:32:42,835 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:32:42,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:32:42,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:32:42,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:32:42,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:32:42,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:32:42,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:32:42,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:42,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:32:42,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:32:42,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:32:42,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 05:32:42,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:32:42,846 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:32:42,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 05:32:42,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:32:42,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 05:32:42,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:32:42,879 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-10-14 05:32:42,879 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1899035899] [2020-10-14 05:32:42,880 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:32:42,880 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-14 05:32:42,880 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189445438] [2020-10-14 05:32:42,881 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 05:32:42,881 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:32:42,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 05:32:42,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-14 05:32:42,882 INFO L87 Difference]: Start difference. First operand 97 states and 124 transitions. Second operand 7 states. [2020-10-14 05:32:43,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:32:43,048 INFO L93 Difference]: Finished difference Result 103 states and 129 transitions. [2020-10-14 05:32:43,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 05:32:43,049 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 37 [2020-10-14 05:32:43,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:32:43,050 INFO L225 Difference]: With dead ends: 103 [2020-10-14 05:32:43,050 INFO L226 Difference]: Without dead ends: 58 [2020-10-14 05:32:43,051 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-10-14 05:32:43,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-14 05:32:43,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 54. [2020-10-14 05:32:43,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-14 05:32:43,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 66 transitions. [2020-10-14 05:32:43,059 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 66 transitions. Word has length 37 [2020-10-14 05:32:43,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:32:43,060 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 66 transitions. [2020-10-14 05:32:43,060 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 05:32:43,060 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 66 transitions. [2020-10-14 05:32:43,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-14 05:32:43,062 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:32:43,062 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:32:43,062 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 05:32:43,062 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:32:43,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:32:43,063 INFO L82 PathProgramCache]: Analyzing trace with hash 1552421683, now seen corresponding path program 1 times [2020-10-14 05:32:43,063 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:32:43,063 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1692530581] [2020-10-14 05:32:43,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:32:43,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:32:43,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:43,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:43,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:43,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:43,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:43,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:43,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:43,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:43,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:43,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:43,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:43,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:43,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:43,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:44,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:45,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:45,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:45,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:45,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:48,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:32:48,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-14 05:32:48,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-10-14 05:32:48,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 05:32:48,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:32:48,078 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:32:48,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 05:32:48,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-14 05:32:48,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 05:32:48,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 05:32:48,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:32:48,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:32:48,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:48,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:32:48,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:32:48,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:32:48,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:32:48,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:32:48,139 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:32:48,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:32:48,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:32:48,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:32:48,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:32:48,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:32:48,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:32:48,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:48,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:32:48,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:32:48,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:32:48,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:32:48,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:32:48,145 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:32:48,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:32:48,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:32:48,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:32:48,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:32:48,149 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 18 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-14 05:32:48,150 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1692530581] [2020-10-14 05:32:48,150 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:32:48,150 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 05:32:48,150 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588519861] [2020-10-14 05:32:48,151 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 05:32:48,151 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:32:48,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 05:32:48,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 05:32:48,153 INFO L87 Difference]: Start difference. First operand 54 states and 66 transitions. Second operand 7 states. [2020-10-14 05:32:48,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:32:48,352 INFO L93 Difference]: Finished difference Result 148 states and 186 transitions. [2020-10-14 05:32:48,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 05:32:48,352 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 37 [2020-10-14 05:32:48,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:32:48,354 INFO L225 Difference]: With dead ends: 148 [2020-10-14 05:32:48,354 INFO L226 Difference]: Without dead ends: 106 [2020-10-14 05:32:48,355 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-14 05:32:48,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-10-14 05:32:48,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 85. [2020-10-14 05:32:48,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-14 05:32:48,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 103 transitions. [2020-10-14 05:32:48,365 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 103 transitions. Word has length 37 [2020-10-14 05:32:48,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:32:48,366 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 103 transitions. [2020-10-14 05:32:48,366 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 05:32:48,366 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 103 transitions. [2020-10-14 05:32:48,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-14 05:32:48,368 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:32:48,369 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:32:48,369 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 05:32:48,369 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:32:48,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:32:48,369 INFO L82 PathProgramCache]: Analyzing trace with hash 743075057, now seen corresponding path program 1 times [2020-10-14 05:32:48,370 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:32:48,370 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [75078136] [2020-10-14 05:32:48,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:32:48,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:32:48,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:48,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:48,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:32:48,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-14 05:32:48,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:32:48,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 184 [2020-10-14 05:32:48,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:32:48,564 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:32:48,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 05:32:48,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 05:32:48,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-14 05:32:48,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:32:48,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:32:48,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:32:48,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:48,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:32:48,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:32:48,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:32:48,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:32:48,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:32:48,639 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:32:48,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:32:48,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:32:48,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 05:32:48,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:32:48,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:32:48,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:32:48,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:48,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:32:48,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:32:48,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:32:48,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:32:48,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:32:48,646 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:32:48,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:32:48,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:32:48,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 05:32:48,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:32:48,651 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:32:48,651 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [75078136] [2020-10-14 05:32:48,651 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:32:48,651 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 05:32:48,652 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074751299] [2020-10-14 05:32:48,652 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 05:32:48,652 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:32:48,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 05:32:48,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-14 05:32:48,654 INFO L87 Difference]: Start difference. First operand 85 states and 103 transitions. Second operand 10 states. [2020-10-14 05:32:48,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:32:48,922 INFO L93 Difference]: Finished difference Result 177 states and 221 transitions. [2020-10-14 05:32:48,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 05:32:48,923 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 37 [2020-10-14 05:32:48,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:32:48,924 INFO L225 Difference]: With dead ends: 177 [2020-10-14 05:32:48,924 INFO L226 Difference]: Without dead ends: 104 [2020-10-14 05:32:48,925 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=90, Invalid=182, Unknown=0, NotChecked=0, Total=272 [2020-10-14 05:32:48,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-14 05:32:48,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 94. [2020-10-14 05:32:48,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-10-14 05:32:48,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 114 transitions. [2020-10-14 05:32:48,932 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 114 transitions. Word has length 37 [2020-10-14 05:32:48,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:32:48,933 INFO L479 AbstractCegarLoop]: Abstraction has 94 states and 114 transitions. [2020-10-14 05:32:48,933 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 05:32:48,933 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 114 transitions. [2020-10-14 05:32:48,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-14 05:32:48,933 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:32:48,933 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:32:48,934 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 05:32:48,934 INFO L427 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:32:48,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:32:48,934 INFO L82 PathProgramCache]: Analyzing trace with hash 995727425, now seen corresponding path program 2 times [2020-10-14 05:32:48,934 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:32:48,935 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [206043308] [2020-10-14 05:32:48,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:32:48,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:32:48,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:48,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:49,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:32:49,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-14 05:32:49,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:32:49,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 236 [2020-10-14 05:32:49,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:32:49,178 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:32:49,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 05:32:49,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 05:32:49,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 05:32:49,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:32:49,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:32:49,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:32:49,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:49,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:32:49,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:32:49,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:32:49,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:32:49,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:32:49,261 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:32:49,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:32:49,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:32:49,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 05:32:49,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:32:49,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:32:49,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:32:49,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:49,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:32:49,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:32:49,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:32:49,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:32:49,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:32:49,267 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:32:49,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:32:49,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:32:49,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 05:32:49,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:32:49,271 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:32:49,272 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [206043308] [2020-10-14 05:32:49,272 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:32:49,272 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 05:32:49,272 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006339122] [2020-10-14 05:32:49,273 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 05:32:49,273 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:32:49,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 05:32:49,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-10-14 05:32:49,274 INFO L87 Difference]: Start difference. First operand 94 states and 114 transitions. Second operand 11 states. [2020-10-14 05:32:49,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:32:49,483 INFO L93 Difference]: Finished difference Result 195 states and 243 transitions. [2020-10-14 05:32:49,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 05:32:49,484 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 40 [2020-10-14 05:32:49,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:32:49,485 INFO L225 Difference]: With dead ends: 195 [2020-10-14 05:32:49,485 INFO L226 Difference]: Without dead ends: 113 [2020-10-14 05:32:49,486 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=114, Invalid=228, Unknown=0, NotChecked=0, Total=342 [2020-10-14 05:32:49,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-10-14 05:32:49,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 103. [2020-10-14 05:32:49,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-14 05:32:49,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 125 transitions. [2020-10-14 05:32:49,494 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 125 transitions. Word has length 40 [2020-10-14 05:32:49,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:32:49,495 INFO L479 AbstractCegarLoop]: Abstraction has 103 states and 125 transitions. [2020-10-14 05:32:49,495 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 05:32:49,495 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 125 transitions. [2020-10-14 05:32:49,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-14 05:32:49,496 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:32:49,497 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:32:49,497 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 05:32:49,497 INFO L427 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:32:49,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:32:49,498 INFO L82 PathProgramCache]: Analyzing trace with hash -1315247375, now seen corresponding path program 3 times [2020-10-14 05:32:49,498 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:32:49,498 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1689665087] [2020-10-14 05:32:49,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:32:49,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:32:49,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:49,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:49,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:32:49,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-14 05:32:49,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:32:49,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 215 [2020-10-14 05:32:49,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:32:49,721 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:32:49,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 05:32:49,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 05:32:49,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-14 05:32:49,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:32:49,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:32:49,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:32:49,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:49,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:32:49,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:32:49,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:32:49,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:32:49,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:32:49,818 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:32:49,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:32:49,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:32:49,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 05:32:49,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:32:49,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:32:49,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:32:49,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:49,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:32:49,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:32:49,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:32:49,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:32:49,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:32:49,823 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:32:49,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:32:49,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:32:49,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 05:32:49,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:32:49,828 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:32:49,829 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1689665087] [2020-10-14 05:32:49,829 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:32:49,829 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 05:32:49,829 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695843192] [2020-10-14 05:32:49,829 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 05:32:49,830 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:32:49,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 05:32:49,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2020-10-14 05:32:49,830 INFO L87 Difference]: Start difference. First operand 103 states and 125 transitions. Second operand 12 states. [2020-10-14 05:32:50,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:32:50,036 INFO L93 Difference]: Finished difference Result 213 states and 265 transitions. [2020-10-14 05:32:50,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 05:32:50,036 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 43 [2020-10-14 05:32:50,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:32:50,037 INFO L225 Difference]: With dead ends: 213 [2020-10-14 05:32:50,038 INFO L226 Difference]: Without dead ends: 122 [2020-10-14 05:32:50,038 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=141, Invalid=279, Unknown=0, NotChecked=0, Total=420 [2020-10-14 05:32:50,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-10-14 05:32:50,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 112. [2020-10-14 05:32:50,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-10-14 05:32:50,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 136 transitions. [2020-10-14 05:32:50,054 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 136 transitions. Word has length 43 [2020-10-14 05:32:50,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:32:50,055 INFO L479 AbstractCegarLoop]: Abstraction has 112 states and 136 transitions. [2020-10-14 05:32:50,056 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 05:32:50,056 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 136 transitions. [2020-10-14 05:32:50,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-14 05:32:50,056 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:32:50,056 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:32:50,056 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 05:32:50,057 INFO L427 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:32:50,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:32:50,057 INFO L82 PathProgramCache]: Analyzing trace with hash 760240705, now seen corresponding path program 4 times [2020-10-14 05:32:50,057 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:32:50,057 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [965177097] [2020-10-14 05:32:50,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:32:50,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:32:50,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:50,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:50,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:32:50,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-14 05:32:50,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:32:50,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 266 [2020-10-14 05:32:50,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:32:50,332 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:32:50,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 05:32:50,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 05:32:50,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-14 05:32:50,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:32:50,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:32:50,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:32:50,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:50,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:32:50,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:32:50,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:32:50,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:32:50,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:32:50,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:32:50,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:32:50,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:32:50,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 05:32:50,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 05:32:50,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:32:50,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:32:50,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:50,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:32:50,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:32:50,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:32:50,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 05:32:50,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:32:50,461 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:32:50,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:32:50,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:32:50,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 05:32:50,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:32:50,468 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:32:50,468 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [965177097] [2020-10-14 05:32:50,469 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:32:50,469 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 05:32:50,469 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544043469] [2020-10-14 05:32:50,470 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 05:32:50,470 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:32:50,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 05:32:50,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2020-10-14 05:32:50,470 INFO L87 Difference]: Start difference. First operand 112 states and 136 transitions. Second operand 13 states. [2020-10-14 05:32:50,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:32:50,768 INFO L93 Difference]: Finished difference Result 231 states and 287 transitions. [2020-10-14 05:32:50,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 05:32:50,770 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 46 [2020-10-14 05:32:50,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:32:50,771 INFO L225 Difference]: With dead ends: 231 [2020-10-14 05:32:50,771 INFO L226 Difference]: Without dead ends: 131 [2020-10-14 05:32:50,772 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=171, Invalid=335, Unknown=0, NotChecked=0, Total=506 [2020-10-14 05:32:50,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-10-14 05:32:50,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 121. [2020-10-14 05:32:50,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-10-14 05:32:50,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 147 transitions. [2020-10-14 05:32:50,781 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 147 transitions. Word has length 46 [2020-10-14 05:32:50,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:32:50,781 INFO L479 AbstractCegarLoop]: Abstraction has 121 states and 147 transitions. [2020-10-14 05:32:50,781 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 05:32:50,781 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 147 transitions. [2020-10-14 05:32:50,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-14 05:32:50,782 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:32:50,782 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:32:50,782 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 05:32:50,782 INFO L427 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:32:50,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:32:50,782 INFO L82 PathProgramCache]: Analyzing trace with hash 1276438769, now seen corresponding path program 5 times [2020-10-14 05:32:50,783 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:32:50,783 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1692004506] [2020-10-14 05:32:50,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:32:50,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:32:50,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:50,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:51,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:32:51,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-14 05:32:51,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:32:51,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 253 [2020-10-14 05:32:51,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:32:51,044 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:32:51,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 05:32:51,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 05:32:51,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-14 05:32:51,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:32:51,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:32:51,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:32:51,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:51,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:32:51,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:32:51,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:32:51,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:32:51,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:32:51,165 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:32:51,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:32:51,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:32:51,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:32:51,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:32:51,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:32:51,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:32:51,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:51,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:32:51,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:32:51,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:32:51,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:32:51,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:32:51,176 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:32:51,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:32:51,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:32:51,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:32:51,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:32:51,182 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2020-10-14 05:32:51,183 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1692004506] [2020-10-14 05:32:51,183 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:32:51,183 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-14 05:32:51,188 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581054095] [2020-10-14 05:32:51,189 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 05:32:51,189 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:32:51,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 05:32:51,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-14 05:32:51,190 INFO L87 Difference]: Start difference. First operand 121 states and 147 transitions. Second operand 10 states. [2020-10-14 05:32:51,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:32:51,325 INFO L93 Difference]: Finished difference Result 200 states and 242 transitions. [2020-10-14 05:32:51,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 05:32:51,326 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 49 [2020-10-14 05:32:51,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:32:51,327 INFO L225 Difference]: With dead ends: 200 [2020-10-14 05:32:51,327 INFO L226 Difference]: Without dead ends: 198 [2020-10-14 05:32:51,328 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2020-10-14 05:32:51,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2020-10-14 05:32:51,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 196. [2020-10-14 05:32:51,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-10-14 05:32:51,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 237 transitions. [2020-10-14 05:32:51,342 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 237 transitions. Word has length 49 [2020-10-14 05:32:51,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:32:51,342 INFO L479 AbstractCegarLoop]: Abstraction has 196 states and 237 transitions. [2020-10-14 05:32:51,342 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 05:32:51,343 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 237 transitions. [2020-10-14 05:32:51,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-14 05:32:51,343 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:32:51,343 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:32:51,344 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 05:32:51,344 INFO L427 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:32:51,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:32:51,344 INFO L82 PathProgramCache]: Analyzing trace with hash 1274591727, now seen corresponding path program 1 times [2020-10-14 05:32:51,345 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:32:51,345 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1312354452] [2020-10-14 05:32:51,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:32:51,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:32:51,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:51,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:51,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:51,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:51,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:51,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:51,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:51,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:51,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:51,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:51,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:51,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:51,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:51,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:51,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:51,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:51,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:51,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:51,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:51,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:52,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:52,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:52,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:52,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:52,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:52,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:52,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:52,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:52,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:52,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:52,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:52,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:52,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:52,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:52,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:52,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:52,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:53,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:53,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:53,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:53,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:53,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:53,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:53,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:53,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:56,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:32:56,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-14 05:32:56,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 45 [2020-10-14 05:32:56,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-14 05:32:56,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:32:56,381 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:32:56,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 05:32:56,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 05:32:56,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-14 05:32:56,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:32:56,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:32:56,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:32:56,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:56,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:32:56,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:32:56,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:32:56,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:32:56,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:32:56,412 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:32:56,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:32:56,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:32:56,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 05:32:56,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:32:56,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:32:56,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:32:56,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:56,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:32:56,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:32:56,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:32:56,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:32:56,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:32:56,418 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:32:56,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:32:56,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:32:56,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 05:32:56,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:32:56,423 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2020-10-14 05:32:56,424 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1312354452] [2020-10-14 05:32:56,424 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:32:56,424 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 05:32:56,425 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812873534] [2020-10-14 05:32:56,425 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 05:32:56,425 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:32:56,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 05:32:56,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 05:32:56,426 INFO L87 Difference]: Start difference. First operand 196 states and 237 transitions. Second operand 5 states. [2020-10-14 05:32:56,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:32:56,539 INFO L93 Difference]: Finished difference Result 405 states and 500 transitions. [2020-10-14 05:32:56,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 05:32:56,539 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 49 [2020-10-14 05:32:56,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:32:56,543 INFO L225 Difference]: With dead ends: 405 [2020-10-14 05:32:56,544 INFO L226 Difference]: Without dead ends: 296 [2020-10-14 05:32:56,544 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 05:32:56,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2020-10-14 05:32:56,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 296. [2020-10-14 05:32:56,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 296 states. [2020-10-14 05:32:56,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 361 transitions. [2020-10-14 05:32:56,570 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 361 transitions. Word has length 49 [2020-10-14 05:32:56,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:32:56,571 INFO L479 AbstractCegarLoop]: Abstraction has 296 states and 361 transitions. [2020-10-14 05:32:56,571 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 05:32:56,571 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 361 transitions. [2020-10-14 05:32:56,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-14 05:32:56,573 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:32:56,573 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:32:56,574 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 05:32:56,574 INFO L427 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:32:56,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:32:56,575 INFO L82 PathProgramCache]: Analyzing trace with hash -1581151311, now seen corresponding path program 1 times [2020-10-14 05:32:56,575 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:32:56,575 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [426082569] [2020-10-14 05:32:56,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:32:56,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:32:56,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:56,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:56,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:56,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:56,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:56,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:56,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:56,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:56,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:56,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:56,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:56,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:56,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:56,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:56,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:57,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:57,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:58,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:58,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:58,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:59,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:01,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:33:01,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-14 05:33:01,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 21 [2020-10-14 05:33:01,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 05:33:01,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:33:01,586 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:33:01,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 05:33:01,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 05:33:01,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-14 05:33:01,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:33:01,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:33:01,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:33:01,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:01,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:33:01,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:33:01,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:33:01,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:33:01,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:33:01,620 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:33:01,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:33:01,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:33:01,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 05:33:01,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:33:01,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:33:01,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:33:01,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:01,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:33:01,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:33:01,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:33:01,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:33:01,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:33:01,626 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:33:01,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:33:01,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:33:01,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 05:33:01,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:33:01,630 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2020-10-14 05:33:01,631 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [426082569] [2020-10-14 05:33:01,631 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:33:01,631 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 05:33:01,631 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337163245] [2020-10-14 05:33:01,632 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 05:33:01,632 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:33:01,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 05:33:01,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-14 05:33:01,633 INFO L87 Difference]: Start difference. First operand 296 states and 361 transitions. Second operand 6 states. [2020-10-14 05:33:01,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:33:01,780 INFO L93 Difference]: Finished difference Result 705 states and 874 transitions. [2020-10-14 05:33:01,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 05:33:01,781 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 49 [2020-10-14 05:33:01,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:33:01,784 INFO L225 Difference]: With dead ends: 705 [2020-10-14 05:33:01,784 INFO L226 Difference]: Without dead ends: 497 [2020-10-14 05:33:01,785 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-14 05:33:01,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 497 states. [2020-10-14 05:33:01,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 497 to 396. [2020-10-14 05:33:01,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 396 states. [2020-10-14 05:33:01,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 486 transitions. [2020-10-14 05:33:01,816 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 486 transitions. Word has length 49 [2020-10-14 05:33:01,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:33:01,816 INFO L479 AbstractCegarLoop]: Abstraction has 396 states and 486 transitions. [2020-10-14 05:33:01,816 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 05:33:01,817 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 486 transitions. [2020-10-14 05:33:01,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-14 05:33:01,818 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:33:01,818 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 16, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:33:01,818 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-14 05:33:01,818 INFO L427 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:33:01,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:33:01,819 INFO L82 PathProgramCache]: Analyzing trace with hash 325139144, now seen corresponding path program 1 times [2020-10-14 05:33:01,819 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:33:01,819 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [482177893] [2020-10-14 05:33:01,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:33:01,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:33:01,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:01,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:01,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:02,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:02,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:02,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:02,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:02,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:03,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:04,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:04,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:04,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:04,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:04,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:05,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:05,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:05,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:05,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:06,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:06,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:33:06,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-14 05:33:06,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-10-14 05:33:06,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-14 05:33:06,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:33:06,835 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:33:06,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 05:33:06,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 05:33:06,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-14 05:33:06,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:33:06,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:33:07,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:33:07,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:07,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:33:07,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:33:07,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:33:07,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:33:07,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:33:07,005 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:33:07,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:33:07,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:33:07,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 05:33:07,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:33:07,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:33:07,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:33:07,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:07,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:33:07,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:33:07,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:33:07,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:33:07,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:33:07,015 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:33:07,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:33:07,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:33:07,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 05:33:07,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:33:07,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-14 05:33:07,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:33:07,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:07,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:33:07,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:33:07,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:33:07,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 05:33:07,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:33:07,027 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:33:07,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:33:07,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:33:07,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 05:33:07,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:33:07,049 INFO L134 CoverageAnalysis]: Checked inductivity of 504 backedges. 7 proven. 379 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2020-10-14 05:33:07,049 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [482177893] [2020-10-14 05:33:07,050 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:33:07,050 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 05:33:07,050 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984947375] [2020-10-14 05:33:07,051 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 05:33:07,052 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:33:07,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 05:33:07,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2020-10-14 05:33:07,053 INFO L87 Difference]: Start difference. First operand 396 states and 486 transitions. Second operand 14 states. [2020-10-14 05:33:07,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:33:07,498 INFO L93 Difference]: Finished difference Result 793 states and 991 transitions. [2020-10-14 05:33:07,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 05:33:07,498 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 87 [2020-10-14 05:33:07,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:33:07,505 INFO L225 Difference]: With dead ends: 793 [2020-10-14 05:33:07,506 INFO L226 Difference]: Without dead ends: 463 [2020-10-14 05:33:07,508 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=204, Invalid=396, Unknown=0, NotChecked=0, Total=600 [2020-10-14 05:33:07,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2020-10-14 05:33:07,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 429. [2020-10-14 05:33:07,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 429 states. [2020-10-14 05:33:07,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 526 transitions. [2020-10-14 05:33:07,556 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 526 transitions. Word has length 87 [2020-10-14 05:33:07,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:33:07,557 INFO L479 AbstractCegarLoop]: Abstraction has 429 states and 526 transitions. [2020-10-14 05:33:07,557 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 05:33:07,557 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 526 transitions. [2020-10-14 05:33:07,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-14 05:33:07,565 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:33:07,565 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 18, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:33:07,565 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-14 05:33:07,566 INFO L427 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:33:07,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:33:07,566 INFO L82 PathProgramCache]: Analyzing trace with hash -717050438, now seen corresponding path program 2 times [2020-10-14 05:33:07,566 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:33:07,568 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1178575369] [2020-10-14 05:33:07,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:33:07,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:33:07,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:07,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:07,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:07,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:08,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:08,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:08,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:08,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:08,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:08,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:08,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:12,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:33:12,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-14 05:33:12,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 05:33:12,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-14 05:33:12,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:33:12,594 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:33:12,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 05:33:12,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 05:33:12,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-14 05:33:12,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:33:12,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:33:12,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:33:12,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:12,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:33:12,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:33:12,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:33:12,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:33:12,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:33:12,771 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:33:12,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:33:12,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:33:12,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 05:33:12,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:33:12,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:33:12,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:33:12,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:12,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:33:12,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:33:12,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:33:12,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:33:12,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:33:12,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:33:12,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:33:12,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:33:12,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 05:33:12,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:33:12,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-14 05:33:12,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:33:12,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:12,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:33:12,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:33:12,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:33:12,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:33:12,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:33:12,783 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:33:12,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:33:12,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:33:12,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 05:33:12,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:33:12,796 INFO L134 CoverageAnalysis]: Checked inductivity of 619 backedges. 7 proven. 517 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2020-10-14 05:33:12,796 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1178575369] [2020-10-14 05:33:12,797 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:33:12,797 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 05:33:12,797 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932086490] [2020-10-14 05:33:12,797 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 05:33:12,798 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:33:12,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 05:33:12,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=175, Unknown=0, NotChecked=0, Total=272 [2020-10-14 05:33:12,798 INFO L87 Difference]: Start difference. First operand 429 states and 526 transitions. Second operand 17 states. [2020-10-14 05:33:13,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:33:13,606 INFO L93 Difference]: Finished difference Result 1363 states and 1662 transitions. [2020-10-14 05:33:13,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-14 05:33:13,607 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 93 [2020-10-14 05:33:13,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:33:13,612 INFO L225 Difference]: With dead ends: 1363 [2020-10-14 05:33:13,612 INFO L226 Difference]: Without dead ends: 1006 [2020-10-14 05:33:13,614 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 358 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=574, Invalid=1318, Unknown=0, NotChecked=0, Total=1892 [2020-10-14 05:33:13,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1006 states. [2020-10-14 05:33:13,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1006 to 608. [2020-10-14 05:33:13,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 608 states. [2020-10-14 05:33:13,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 729 transitions. [2020-10-14 05:33:13,660 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 729 transitions. Word has length 93 [2020-10-14 05:33:13,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:33:13,660 INFO L479 AbstractCegarLoop]: Abstraction has 608 states and 729 transitions. [2020-10-14 05:33:13,660 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 05:33:13,660 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 729 transitions. [2020-10-14 05:33:13,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-14 05:33:13,662 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:33:13,662 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 22, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:33:13,674 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-14 05:33:13,674 INFO L427 AbstractCegarLoop]: === Iteration 23 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:33:13,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:33:13,675 INFO L82 PathProgramCache]: Analyzing trace with hash -1802522886, now seen corresponding path program 3 times [2020-10-14 05:33:13,675 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:33:13,675 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [886386217] [2020-10-14 05:33:13,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:33:13,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:33:13,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:13,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:13,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:13,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:13,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:13,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:13,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:14,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:14,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:14,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:14,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:14,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:14,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:14,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:14,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:14,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:14,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:15,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:15,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:15,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:15,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:16,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:16,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:16,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:17,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:17,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:18,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:18,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:18,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:18,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:18,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:18,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:18,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:18,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:18,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:18,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:33:18,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-14 05:33:18,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 35 [2020-10-14 05:33:18,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-14 05:33:18,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:33:18,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:33:18,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 05:33:18,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 05:33:18,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-14 05:33:18,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:33:18,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:33:18,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:33:18,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:18,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:33:18,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:33:18,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:33:18,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:33:18,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:33:18,905 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:33:18,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:33:18,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:33:18,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 05:33:18,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:33:18,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:33:18,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:33:18,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:18,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:33:18,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:33:18,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:33:18,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:33:18,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:33:18,917 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:33:18,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:33:18,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:33:18,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 05:33:18,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:33:18,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-14 05:33:18,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:33:18,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:18,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:33:18,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:33:18,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:33:18,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:33:18,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:33:18,925 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:33:18,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:33:18,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:33:18,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 05:33:18,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:33:18,952 INFO L134 CoverageAnalysis]: Checked inductivity of 885 backedges. 7 proven. 667 refuted. 0 times theorem prover too weak. 211 trivial. 0 not checked. [2020-10-14 05:33:18,952 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [886386217] [2020-10-14 05:33:18,956 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:33:18,957 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 05:33:18,957 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928565593] [2020-10-14 05:33:18,958 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 05:33:18,959 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:33:18,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 05:33:18,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=163, Unknown=0, NotChecked=0, Total=272 [2020-10-14 05:33:18,960 INFO L87 Difference]: Start difference. First operand 608 states and 729 transitions. Second operand 17 states. [2020-10-14 05:33:19,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:33:19,678 INFO L93 Difference]: Finished difference Result 1594 states and 1875 transitions. [2020-10-14 05:33:19,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 05:33:19,679 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 105 [2020-10-14 05:33:19,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:33:19,684 INFO L225 Difference]: With dead ends: 1594 [2020-10-14 05:33:19,684 INFO L226 Difference]: Without dead ends: 1096 [2020-10-14 05:33:19,687 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=321, Invalid=609, Unknown=0, NotChecked=0, Total=930 [2020-10-14 05:33:19,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1096 states. [2020-10-14 05:33:19,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1096 to 656. [2020-10-14 05:33:19,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 656 states. [2020-10-14 05:33:19,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 656 states to 656 states and 786 transitions. [2020-10-14 05:33:19,743 INFO L78 Accepts]: Start accepts. Automaton has 656 states and 786 transitions. Word has length 105 [2020-10-14 05:33:19,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:33:19,744 INFO L479 AbstractCegarLoop]: Abstraction has 656 states and 786 transitions. [2020-10-14 05:33:19,745 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 05:33:19,745 INFO L276 IsEmpty]: Start isEmpty. Operand 656 states and 786 transitions. [2020-10-14 05:33:19,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-14 05:33:19,748 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:33:19,748 INFO L422 BasicCegarLoop]: trace histogram [26, 26, 24, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:33:19,748 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-14 05:33:19,748 INFO L427 AbstractCegarLoop]: === Iteration 24 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:33:19,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:33:19,749 INFO L82 PathProgramCache]: Analyzing trace with hash 1019488328, now seen corresponding path program 4 times [2020-10-14 05:33:19,749 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:33:19,749 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [953148412] [2020-10-14 05:33:19,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:33:19,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:33:19,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:19,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:19,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:19,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:19,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:19,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:19,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:20,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:20,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:20,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:21,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:21,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:21,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:21,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:21,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:21,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:21,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:22,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:22,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:22,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:22,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:22,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:23,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:23,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:23,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:23,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:24,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:24,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:24,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:24,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:24,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:24,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:24,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:24,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:24,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:24,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:24,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:24,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:33:24,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-14 05:33:24,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 37 [2020-10-14 05:33:24,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-14 05:33:24,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:33:24,767 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:33:24,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-14 05:33:24,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 05:33:24,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-14 05:33:24,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:33:25,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:33:25,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:33:25,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:25,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:33:25,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:33:25,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:33:25,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:33:25,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:33:25,042 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:33:25,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:33:25,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:33:25,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 05:33:25,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:33:25,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:33:25,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:33:25,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:25,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:33:25,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:33:25,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:33:25,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:33:25,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:33:25,047 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:33:25,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:33:25,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:33:25,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 05:33:25,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:33:25,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-14 05:33:25,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:33:25,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:25,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:33:25,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:33:25,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:33:25,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:33:25,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:33:25,053 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:33:25,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:33:25,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:33:25,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 05:33:25,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:33:25,073 INFO L134 CoverageAnalysis]: Checked inductivity of 1036 backedges. 7 proven. 881 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2020-10-14 05:33:25,073 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [953148412] [2020-10-14 05:33:25,074 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:33:25,074 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-14 05:33:25,074 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029468573] [2020-10-14 05:33:25,074 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-14 05:33:25,074 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:33:25,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-14 05:33:25,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=261, Unknown=0, NotChecked=0, Total=420 [2020-10-14 05:33:25,075 INFO L87 Difference]: Start difference. First operand 656 states and 786 transitions. Second operand 21 states. [2020-10-14 05:33:26,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:33:26,130 INFO L93 Difference]: Finished difference Result 2054 states and 2465 transitions. [2020-10-14 05:33:26,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-14 05:33:26,130 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 111 [2020-10-14 05:33:26,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:33:26,138 INFO L225 Difference]: With dead ends: 2054 [2020-10-14 05:33:26,138 INFO L226 Difference]: Without dead ends: 1517 [2020-10-14 05:33:26,141 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 607 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=950, Invalid=2130, Unknown=0, NotChecked=0, Total=3080 [2020-10-14 05:33:26,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1517 states. [2020-10-14 05:33:26,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1517 to 770. [2020-10-14 05:33:26,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 770 states. [2020-10-14 05:33:26,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 770 states to 770 states and 921 transitions. [2020-10-14 05:33:26,204 INFO L78 Accepts]: Start accepts. Automaton has 770 states and 921 transitions. Word has length 111 [2020-10-14 05:33:26,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:33:26,205 INFO L479 AbstractCegarLoop]: Abstraction has 770 states and 921 transitions. [2020-10-14 05:33:26,205 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-14 05:33:26,205 INFO L276 IsEmpty]: Start isEmpty. Operand 770 states and 921 transitions. [2020-10-14 05:33:26,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-10-14 05:33:26,207 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:33:26,207 INFO L422 BasicCegarLoop]: trace histogram [32, 32, 30, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:33:26,207 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-14 05:33:26,208 INFO L427 AbstractCegarLoop]: === Iteration 25 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:33:26,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:33:26,208 INFO L82 PathProgramCache]: Analyzing trace with hash 1620369786, now seen corresponding path program 5 times [2020-10-14 05:33:26,208 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:33:26,208 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1943904832] [2020-10-14 05:33:26,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:33:26,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:33:26,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:26,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:26,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:26,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:26,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:26,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:26,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:26,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:26,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:26,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:26,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:26,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:26,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:26,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:26,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:26,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:27,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:27,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:27,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:27,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:27,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:28,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:28,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:28,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:28,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:28,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:28,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:28,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:29,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:29,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:30,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:30,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:30,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:30,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:30,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:30,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:30,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:30,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:30,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:30,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:30,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:30,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:31,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:31,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:33:31,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-14 05:33:31,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 43 [2020-10-14 05:33:31,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-14 05:33:31,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:33:31,233 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:33:31,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-14 05:33:31,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 05:33:31,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-14 05:33:31,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:33:31,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:33:31,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:33:31,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:31,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:33:31,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:33:31,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:33:31,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:33:31,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:33:31,563 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:33:31,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:33:31,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:33:31,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 05:33:31,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:33:31,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:33:31,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:33:31,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:31,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:33:31,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:33:31,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:33:31,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:33:31,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:33:31,566 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:33:31,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:33:31,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:33:31,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 05:33:31,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:33:31,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-14 05:33:31,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:33:31,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:31,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:33:31,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:33:31,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:33:31,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:33:31,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:33:31,571 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:33:31,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:33:31,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:33:31,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 05:33:31,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:33:31,598 INFO L134 CoverageAnalysis]: Checked inductivity of 1561 backedges. 7 proven. 1304 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked. [2020-10-14 05:33:31,598 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1943904832] [2020-10-14 05:33:31,599 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:33:31,599 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-14 05:33:31,599 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675591692] [2020-10-14 05:33:31,600 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-14 05:33:31,600 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:33:31,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-14 05:33:31,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=216, Invalid=336, Unknown=0, NotChecked=0, Total=552 [2020-10-14 05:33:31,601 INFO L87 Difference]: Start difference. First operand 770 states and 921 transitions. Second operand 24 states. [2020-10-14 05:33:33,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:33:33,147 INFO L93 Difference]: Finished difference Result 1581 states and 1945 transitions. [2020-10-14 05:33:33,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-10-14 05:33:33,148 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 129 [2020-10-14 05:33:33,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:33:33,159 INFO L225 Difference]: With dead ends: 1581 [2020-10-14 05:33:33,159 INFO L226 Difference]: Without dead ends: 954 [2020-10-14 05:33:33,163 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 835 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1295, Invalid=2865, Unknown=0, NotChecked=0, Total=4160 [2020-10-14 05:33:33,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 954 states. [2020-10-14 05:33:33,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 954 to 896. [2020-10-14 05:33:33,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 896 states. [2020-10-14 05:33:33,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 896 states to 896 states and 1068 transitions. [2020-10-14 05:33:33,216 INFO L78 Accepts]: Start accepts. Automaton has 896 states and 1068 transitions. Word has length 129 [2020-10-14 05:33:33,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:33:33,216 INFO L479 AbstractCegarLoop]: Abstraction has 896 states and 1068 transitions. [2020-10-14 05:33:33,217 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-14 05:33:33,217 INFO L276 IsEmpty]: Start isEmpty. Operand 896 states and 1068 transitions. [2020-10-14 05:33:33,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-10-14 05:33:33,219 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:33:33,220 INFO L422 BasicCegarLoop]: trace histogram [38, 38, 36, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:33:33,220 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-14 05:33:33,220 INFO L427 AbstractCegarLoop]: === Iteration 26 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:33:33,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:33:33,220 INFO L82 PathProgramCache]: Analyzing trace with hash 1245942920, now seen corresponding path program 6 times [2020-10-14 05:33:33,221 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:33:33,221 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [432025039] [2020-10-14 05:33:33,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:33:33,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:33:33,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:33,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:33,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:33,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:33,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:33,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:33,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:33,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:34,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:34,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:34,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:34,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:34,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:34,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:34,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:34,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:34,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:35,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:35,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:35,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:35,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:35,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:35,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:35,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:35,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:36,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:36,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:37,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:37,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:38,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:33:38,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-10-14 05:33:38,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 29 [2020-10-14 05:33:38,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 05:33:38,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:33:38,239 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:33:38,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-14 05:33:38,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 05:33:38,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-14 05:33:38,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:33:38,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:33:38,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:33:38,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:38,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:33:38,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:33:38,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:33:38,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:33:38,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:33:38,798 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:33:38,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:33:38,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:33:38,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 05:33:38,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:33:38,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:33:38,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:33:38,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:38,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:33:38,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:33:38,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:33:38,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:33:38,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:33:38,802 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:33:38,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:33:38,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:33:38,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 05:33:38,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:33:38,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-14 05:33:38,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:33:38,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:38,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:33:38,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:33:38,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:33:38,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:33:38,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:33:38,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:33:38,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:33:38,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:33:38,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 05:33:38,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:33:38,829 INFO L134 CoverageAnalysis]: Checked inductivity of 2194 backedges. 995 proven. 977 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2020-10-14 05:33:38,829 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [432025039] [2020-10-14 05:33:38,829 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:33:38,830 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-14 05:33:38,830 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763490406] [2020-10-14 05:33:38,830 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-14 05:33:38,830 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:33:38,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-14 05:33:38,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=272, Invalid=720, Unknown=0, NotChecked=0, Total=992 [2020-10-14 05:33:38,831 INFO L87 Difference]: Start difference. First operand 896 states and 1068 transitions. Second operand 32 states. [2020-10-14 05:33:42,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:33:42,919 INFO L93 Difference]: Finished difference Result 3344 states and 3810 transitions. [2020-10-14 05:33:42,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2020-10-14 05:33:42,920 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 147 [2020-10-14 05:33:42,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:33:42,938 INFO L225 Difference]: With dead ends: 3344 [2020-10-14 05:33:42,939 INFO L226 Difference]: Without dead ends: 2861 [2020-10-14 05:33:42,948 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1002 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1929, Invalid=4551, Unknown=0, NotChecked=0, Total=6480 [2020-10-14 05:33:42,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2861 states. [2020-10-14 05:33:43,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2861 to 1833. [2020-10-14 05:33:43,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1833 states. [2020-10-14 05:33:43,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1833 states to 1833 states and 2028 transitions. [2020-10-14 05:33:43,115 INFO L78 Accepts]: Start accepts. Automaton has 1833 states and 2028 transitions. Word has length 147 [2020-10-14 05:33:43,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:33:43,115 INFO L479 AbstractCegarLoop]: Abstraction has 1833 states and 2028 transitions. [2020-10-14 05:33:43,116 INFO L480 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-14 05:33:43,116 INFO L276 IsEmpty]: Start isEmpty. Operand 1833 states and 2028 transitions. [2020-10-14 05:33:43,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-10-14 05:33:43,120 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:33:43,120 INFO L422 BasicCegarLoop]: trace histogram [38, 38, 27, 11, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:33:43,120 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-14 05:33:43,120 INFO L427 AbstractCegarLoop]: === Iteration 27 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:33:43,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:33:43,121 INFO L82 PathProgramCache]: Analyzing trace with hash -970953146, now seen corresponding path program 7 times [2020-10-14 05:33:43,121 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:33:43,121 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1952242758] [2020-10-14 05:33:43,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:33:43,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:33:43,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:43,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:43,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:43,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:43,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:43,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:44,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:44,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:44,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:44,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:44,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:44,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:44,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:45,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:45,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:45,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:45,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:45,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:45,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:47,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:48,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:33:48,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-10-14 05:33:48,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 20 [2020-10-14 05:33:48,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 05:33:48,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:33:48,141 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:33:48,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 05:33:48,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-14 05:33:48,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-14 05:33:48,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:33:48,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:33:48,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:33:48,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:48,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:33:48,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:33:48,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:33:48,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:33:48,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:33:48,288 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:33:48,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:33:48,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:33:48,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:33:48,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:33:48,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:33:48,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:33:48,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:48,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:33:48,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:33:48,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:33:48,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:33:48,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:33:48,291 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:33:48,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:33:48,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:33:48,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:33:48,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:33:48,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-14 05:33:48,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:33:48,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:48,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:33:48,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:33:48,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:33:48,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:33:48,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:33:48,296 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:33:48,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:33:48,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:33:48,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 05:33:48,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:33:48,310 INFO L134 CoverageAnalysis]: Checked inductivity of 2194 backedges. 1053 proven. 618 refuted. 0 times theorem prover too weak. 523 trivial. 0 not checked. [2020-10-14 05:33:48,310 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1952242758] [2020-10-14 05:33:48,310 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:33:48,310 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 05:33:48,310 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390607360] [2020-10-14 05:33:48,311 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 05:33:48,311 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:33:48,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 05:33:48,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2020-10-14 05:33:48,312 INFO L87 Difference]: Start difference. First operand 1833 states and 2028 transitions. Second operand 16 states. [2020-10-14 05:33:48,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:33:48,929 INFO L93 Difference]: Finished difference Result 3037 states and 3360 transitions. [2020-10-14 05:33:48,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-14 05:33:48,929 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 147 [2020-10-14 05:33:48,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:33:48,939 INFO L225 Difference]: With dead ends: 3037 [2020-10-14 05:33:48,939 INFO L226 Difference]: Without dead ends: 1994 [2020-10-14 05:33:48,942 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=257, Invalid=735, Unknown=0, NotChecked=0, Total=992 [2020-10-14 05:33:48,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1994 states. [2020-10-14 05:33:49,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1994 to 1720. [2020-10-14 05:33:49,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1720 states. [2020-10-14 05:33:49,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1720 states to 1720 states and 1919 transitions. [2020-10-14 05:33:49,080 INFO L78 Accepts]: Start accepts. Automaton has 1720 states and 1919 transitions. Word has length 147 [2020-10-14 05:33:49,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:33:49,080 INFO L479 AbstractCegarLoop]: Abstraction has 1720 states and 1919 transitions. [2020-10-14 05:33:49,080 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 05:33:49,080 INFO L276 IsEmpty]: Start isEmpty. Operand 1720 states and 1919 transitions. [2020-10-14 05:33:49,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-10-14 05:33:49,084 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:33:49,084 INFO L422 BasicCegarLoop]: trace histogram [38, 38, 26, 12, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:33:49,084 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-14 05:33:49,084 INFO L427 AbstractCegarLoop]: === Iteration 28 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:33:49,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:33:49,085 INFO L82 PathProgramCache]: Analyzing trace with hash -482906040, now seen corresponding path program 8 times [2020-10-14 05:33:49,085 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:33:49,085 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1611631548] [2020-10-14 05:33:49,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:33:49,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:33:49,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:49,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:49,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:49,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:49,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:49,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:49,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:49,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:49,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:49,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:50,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:50,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:50,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:50,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:50,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:50,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:50,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:50,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:50,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:50,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:50,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:50,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:50,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:51,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:51,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:51,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:51,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:51,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:51,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:52,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:52,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:52,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:52,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:52,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:53,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:53,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:53,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:53,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:53,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:53,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:54,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:33:54,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-10-14 05:33:54,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 40 [2020-10-14 05:33:54,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 05:33:54,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:33:54,109 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:33:54,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-14 05:33:54,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 05:33:54,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-14 05:33:54,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:33:54,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:33:54,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:33:54,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:54,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:33:54,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:33:54,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:33:54,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:33:54,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:33:54,618 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:33:54,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:33:54,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:33:54,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 05:33:54,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:33:54,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:33:54,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:33:54,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:54,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:33:54,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:33:54,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:33:54,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:33:54,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:33:54,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:33:54,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:33:54,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:33:54,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 05:33:54,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:33:54,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-14 05:33:54,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:33:54,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:54,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:33:54,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:33:54,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:33:54,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:33:54,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:33:54,627 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:33:54,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:33:54,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:33:54,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 05:33:54,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:33:54,646 INFO L134 CoverageAnalysis]: Checked inductivity of 2194 backedges. 787 proven. 1281 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2020-10-14 05:33:54,646 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1611631548] [2020-10-14 05:33:54,647 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:33:54,647 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-14 05:33:54,647 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719181744] [2020-10-14 05:33:54,648 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-14 05:33:54,648 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:33:54,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-14 05:33:54,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=236, Invalid=756, Unknown=0, NotChecked=0, Total=992 [2020-10-14 05:33:54,649 INFO L87 Difference]: Start difference. First operand 1720 states and 1919 transitions. Second operand 32 states. [2020-10-14 05:33:58,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:33:58,320 INFO L93 Difference]: Finished difference Result 2856 states and 3243 transitions. [2020-10-14 05:33:58,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2020-10-14 05:33:58,321 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 147 [2020-10-14 05:33:58,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:33:58,332 INFO L225 Difference]: With dead ends: 2856 [2020-10-14 05:33:58,333 INFO L226 Difference]: Without dead ends: 2544 [2020-10-14 05:33:58,336 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 882 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1699, Invalid=4153, Unknown=0, NotChecked=0, Total=5852 [2020-10-14 05:33:58,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2544 states. [2020-10-14 05:33:58,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2544 to 1992. [2020-10-14 05:33:58,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1992 states. [2020-10-14 05:33:58,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1992 states to 1992 states and 2196 transitions. [2020-10-14 05:33:58,496 INFO L78 Accepts]: Start accepts. Automaton has 1992 states and 2196 transitions. Word has length 147 [2020-10-14 05:33:58,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:33:58,496 INFO L479 AbstractCegarLoop]: Abstraction has 1992 states and 2196 transitions. [2020-10-14 05:33:58,497 INFO L480 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-14 05:33:58,497 INFO L276 IsEmpty]: Start isEmpty. Operand 1992 states and 2196 transitions. [2020-10-14 05:33:58,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-10-14 05:33:58,503 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:33:58,503 INFO L422 BasicCegarLoop]: trace histogram [38, 38, 22, 16, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:33:58,504 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-14 05:33:58,504 INFO L427 AbstractCegarLoop]: === Iteration 29 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:33:58,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:33:58,504 INFO L82 PathProgramCache]: Analyzing trace with hash 312955336, now seen corresponding path program 9 times [2020-10-14 05:33:58,504 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:33:58,505 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [34382860] [2020-10-14 05:33:58,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:33:58,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:33:58,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:58,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:58,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:58,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:59,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:59,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:59,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:59,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:59,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:00,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:00,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:00,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:00,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:01,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:01,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:01,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:01,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:01,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:01,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:01,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:02,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:02,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:03,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:03,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-10-14 05:34:03,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 22 [2020-10-14 05:34:03,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-14 05:34:03,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:03,527 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:03,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-14 05:34:03,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-14 05:34:03,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-14 05:34:03,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:03,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:34:03,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:03,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:03,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:03,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:34:03,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:03,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:34:03,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:03,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:03,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:34:03,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:34:03,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:34:03,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:34:03,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:34:03,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:03,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:03,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:03,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:34:03,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:03,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:34:03,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:03,783 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:03,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:34:03,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:34:03,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:34:03,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:03,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-14 05:34:03,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:03,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:03,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:03,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:34:03,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:03,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:34:03,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:03,788 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:03,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:34:03,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:34:03,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 05:34:03,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:03,811 INFO L134 CoverageAnalysis]: Checked inductivity of 2194 backedges. 975 proven. 906 refuted. 0 times theorem prover too weak. 313 trivial. 0 not checked. [2020-10-14 05:34:03,811 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [34382860] [2020-10-14 05:34:03,811 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:34:03,812 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-14 05:34:03,812 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433190382] [2020-10-14 05:34:03,812 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-14 05:34:03,812 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:34:03,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-14 05:34:03,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2020-10-14 05:34:03,813 INFO L87 Difference]: Start difference. First operand 1992 states and 2196 transitions. Second operand 22 states. [2020-10-14 05:34:04,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:34:04,790 INFO L93 Difference]: Finished difference Result 3567 states and 3938 transitions. [2020-10-14 05:34:04,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-10-14 05:34:04,791 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 147 [2020-10-14 05:34:04,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:34:04,800 INFO L225 Difference]: With dead ends: 3567 [2020-10-14 05:34:04,800 INFO L226 Difference]: Without dead ends: 2309 [2020-10-14 05:34:04,804 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 522 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=665, Invalid=1785, Unknown=0, NotChecked=0, Total=2450 [2020-10-14 05:34:04,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2309 states. [2020-10-14 05:34:04,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2309 to 2063. [2020-10-14 05:34:04,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2063 states. [2020-10-14 05:34:04,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2063 states to 2063 states and 2292 transitions. [2020-10-14 05:34:04,945 INFO L78 Accepts]: Start accepts. Automaton has 2063 states and 2292 transitions. Word has length 147 [2020-10-14 05:34:04,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:34:04,946 INFO L479 AbstractCegarLoop]: Abstraction has 2063 states and 2292 transitions. [2020-10-14 05:34:04,946 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-14 05:34:04,946 INFO L276 IsEmpty]: Start isEmpty. Operand 2063 states and 2292 transitions. [2020-10-14 05:34:04,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-10-14 05:34:04,950 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:34:04,950 INFO L422 BasicCegarLoop]: trace histogram [38, 38, 19, 19, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:34:04,950 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-14 05:34:04,950 INFO L427 AbstractCegarLoop]: === Iteration 30 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:34:04,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:34:04,951 INFO L82 PathProgramCache]: Analyzing trace with hash 870768198, now seen corresponding path program 10 times [2020-10-14 05:34:04,951 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:34:04,951 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2036244490] [2020-10-14 05:34:04,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:34:04,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:04,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:05,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:05,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:05,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:05,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:05,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:05,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:06,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:06,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:06,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:07,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:07,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:07,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:07,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:07,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:07,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:07,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:08,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:08,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:08,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:09,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:09,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-10-14 05:34:09,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 20 [2020-10-14 05:34:09,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-14 05:34:09,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:09,973 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:09,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-14 05:34:09,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 05:34:09,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-14 05:34:09,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:10,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:34:10,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:10,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:10,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:10,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:34:10,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:10,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 05:34:10,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:10,489 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:10,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:34:10,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:34:10,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 05:34:10,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:34:10,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:34:10,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:10,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:10,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:10,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:34:10,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:10,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:34:10,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:10,496 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:10,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:34:10,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:34:10,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 05:34:10,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:10,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-14 05:34:10,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:10,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:10,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:10,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:34:10,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:10,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:34:10,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:10,504 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:10,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:34:10,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:34:10,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 05:34:10,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:34:10,542 INFO L134 CoverageAnalysis]: Checked inductivity of 2194 backedges. 647 proven. 1433 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2020-10-14 05:34:10,543 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2036244490] [2020-10-14 05:34:10,546 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:34:10,546 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-14 05:34:10,546 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909627415] [2020-10-14 05:34:10,547 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-14 05:34:10,547 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:34:10,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-14 05:34:10,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=230, Invalid=762, Unknown=0, NotChecked=0, Total=992 [2020-10-14 05:34:10,548 INFO L87 Difference]: Start difference. First operand 2063 states and 2292 transitions. Second operand 32 states. [2020-10-14 05:34:13,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:34:13,637 INFO L93 Difference]: Finished difference Result 2933 states and 3316 transitions. [2020-10-14 05:34:13,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-10-14 05:34:13,638 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 147 [2020-10-14 05:34:13,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:34:13,646 INFO L225 Difference]: With dead ends: 2933 [2020-10-14 05:34:13,646 INFO L226 Difference]: Without dead ends: 2657 [2020-10-14 05:34:13,650 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 859 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1602, Invalid=3948, Unknown=0, NotChecked=0, Total=5550 [2020-10-14 05:34:13,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2657 states. [2020-10-14 05:34:13,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2657 to 2237. [2020-10-14 05:34:13,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2237 states. [2020-10-14 05:34:13,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2237 states to 2237 states and 2477 transitions. [2020-10-14 05:34:13,815 INFO L78 Accepts]: Start accepts. Automaton has 2237 states and 2477 transitions. Word has length 147 [2020-10-14 05:34:13,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:34:13,815 INFO L479 AbstractCegarLoop]: Abstraction has 2237 states and 2477 transitions. [2020-10-14 05:34:13,815 INFO L480 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-14 05:34:13,815 INFO L276 IsEmpty]: Start isEmpty. Operand 2237 states and 2477 transitions. [2020-10-14 05:34:13,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-10-14 05:34:13,822 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:34:13,822 INFO L422 BasicCegarLoop]: trace histogram [38, 38, 21, 17, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:34:13,822 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-14 05:34:13,823 INFO L427 AbstractCegarLoop]: === Iteration 31 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:34:13,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:34:13,823 INFO L82 PathProgramCache]: Analyzing trace with hash -1763236090, now seen corresponding path program 11 times [2020-10-14 05:34:13,823 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:34:13,824 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [796042786] [2020-10-14 05:34:13,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:34:13,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:13,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:13,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:13,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:14,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:14,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:14,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:14,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:14,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:14,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:15,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:16,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:17,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:17,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:17,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:17,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:17,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:18,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:18,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-10-14 05:34:18,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-14 05:34:18,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 05:34:18,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:18,849 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:18,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-14 05:34:18,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 05:34:18,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-14 05:34:18,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:19,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:34:19,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:19,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:19,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:19,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:34:19,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:19,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:34:19,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:19,387 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:19,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:34:19,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:34:19,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 05:34:19,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:19,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:34:19,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:19,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:19,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:19,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:34:19,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:19,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:34:19,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:19,392 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:19,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:34:19,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:34:19,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 05:34:19,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:19,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-14 05:34:19,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:19,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:19,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:19,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:34:19,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:19,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:34:19,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:19,395 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:19,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:34:19,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:34:19,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 05:34:19,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:19,415 INFO L134 CoverageAnalysis]: Checked inductivity of 2194 backedges. 568 proven. 1509 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2020-10-14 05:34:19,415 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [796042786] [2020-10-14 05:34:19,415 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:34:19,415 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-14 05:34:19,416 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420974302] [2020-10-14 05:34:19,416 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-14 05:34:19,416 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:34:19,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-14 05:34:19,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=230, Invalid=762, Unknown=0, NotChecked=0, Total=992 [2020-10-14 05:34:19,417 INFO L87 Difference]: Start difference. First operand 2237 states and 2477 transitions. Second operand 32 states. [2020-10-14 05:34:22,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:34:22,869 INFO L93 Difference]: Finished difference Result 2995 states and 3372 transitions. [2020-10-14 05:34:22,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-10-14 05:34:22,869 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 147 [2020-10-14 05:34:22,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:34:22,880 INFO L225 Difference]: With dead ends: 2995 [2020-10-14 05:34:22,881 INFO L226 Difference]: Without dead ends: 2737 [2020-10-14 05:34:22,884 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 792 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1558, Invalid=3844, Unknown=0, NotChecked=0, Total=5402 [2020-10-14 05:34:22,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2737 states. [2020-10-14 05:34:23,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2737 to 2380. [2020-10-14 05:34:23,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2380 states. [2020-10-14 05:34:23,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2380 states to 2380 states and 2634 transitions. [2020-10-14 05:34:23,070 INFO L78 Accepts]: Start accepts. Automaton has 2380 states and 2634 transitions. Word has length 147 [2020-10-14 05:34:23,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:34:23,071 INFO L479 AbstractCegarLoop]: Abstraction has 2380 states and 2634 transitions. [2020-10-14 05:34:23,071 INFO L480 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-14 05:34:23,071 INFO L276 IsEmpty]: Start isEmpty. Operand 2380 states and 2634 transitions. [2020-10-14 05:34:23,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-10-14 05:34:23,076 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:34:23,076 INFO L422 BasicCegarLoop]: trace histogram [38, 38, 22, 16, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:34:23,077 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-14 05:34:23,077 INFO L427 AbstractCegarLoop]: === Iteration 32 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:34:23,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:34:23,078 INFO L82 PathProgramCache]: Analyzing trace with hash -1701196476, now seen corresponding path program 12 times [2020-10-14 05:34:23,078 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:34:23,078 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1621652007] [2020-10-14 05:34:23,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:34:23,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:23,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:23,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:23,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:23,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:23,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:23,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:23,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:24,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:24,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:24,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:26,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:26,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:26,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:26,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:26,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:26,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:27,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:27,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:27,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:27,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:27,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:27,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:27,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:27,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:27,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:27,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:27,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:27,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:28,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:28,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-10-14 05:34:28,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 28 [2020-10-14 05:34:28,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-14 05:34:28,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:28,101 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:28,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-14 05:34:28,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-14 05:34:28,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-14 05:34:28,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:28,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:34:28,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:28,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:28,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:28,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:34:28,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:28,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:34:28,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:28,516 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:28,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:34:28,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:34:28,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:34:28,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:28,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:34:28,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:28,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:28,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:28,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:34:28,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:28,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:34:28,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:28,520 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:28,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:34:28,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:34:28,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:34:28,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:28,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-14 05:34:28,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:28,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:28,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:28,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:34:28,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:28,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:34:28,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:28,524 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:28,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:34:28,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:34:28,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 05:34:28,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:28,543 INFO L134 CoverageAnalysis]: Checked inductivity of 2194 backedges. 829 proven. 1248 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2020-10-14 05:34:28,543 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1621652007] [2020-10-14 05:34:28,543 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:34:28,543 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-14 05:34:28,543 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326155681] [2020-10-14 05:34:28,544 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-14 05:34:28,544 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:34:28,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-14 05:34:28,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=214, Invalid=656, Unknown=0, NotChecked=0, Total=870 [2020-10-14 05:34:28,545 INFO L87 Difference]: Start difference. First operand 2380 states and 2634 transitions. Second operand 30 states. [2020-10-14 05:34:30,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:34:30,328 INFO L93 Difference]: Finished difference Result 4589 states and 5093 transitions. [2020-10-14 05:34:30,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2020-10-14 05:34:30,329 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 147 [2020-10-14 05:34:30,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:34:30,342 INFO L225 Difference]: With dead ends: 4589 [2020-10-14 05:34:30,342 INFO L226 Difference]: Without dead ends: 2871 [2020-10-14 05:34:30,349 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1236 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1517, Invalid=3885, Unknown=0, NotChecked=0, Total=5402 [2020-10-14 05:34:30,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2871 states. [2020-10-14 05:34:30,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2871 to 2578. [2020-10-14 05:34:30,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2578 states. [2020-10-14 05:34:30,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2578 states to 2578 states and 2882 transitions. [2020-10-14 05:34:30,571 INFO L78 Accepts]: Start accepts. Automaton has 2578 states and 2882 transitions. Word has length 147 [2020-10-14 05:34:30,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:34:30,571 INFO L479 AbstractCegarLoop]: Abstraction has 2578 states and 2882 transitions. [2020-10-14 05:34:30,572 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-14 05:34:30,572 INFO L276 IsEmpty]: Start isEmpty. Operand 2578 states and 2882 transitions. [2020-10-14 05:34:30,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-10-14 05:34:30,576 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:34:30,577 INFO L422 BasicCegarLoop]: trace histogram [38, 38, 26, 12, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:34:30,577 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-14 05:34:30,577 INFO L427 AbstractCegarLoop]: === Iteration 33 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:34:30,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:34:30,577 INFO L82 PathProgramCache]: Analyzing trace with hash 796007364, now seen corresponding path program 13 times [2020-10-14 05:34:30,578 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:34:30,578 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1601211733] [2020-10-14 05:34:30,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:34:30,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:30,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:30,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:30,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:30,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:30,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:30,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:30,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:30,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:30,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:30,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:30,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:35,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:35,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-10-14 05:34:35,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 05:34:35,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-14 05:34:35,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:35,599 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:35,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-14 05:34:35,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 05:34:35,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-14 05:34:35,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:36,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:34:36,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:36,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:36,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:36,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:34:36,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:36,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:34:36,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:36,135 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:36,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:34:36,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:34:36,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 05:34:36,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:36,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:34:36,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:36,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:36,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:36,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:34:36,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:36,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:34:36,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:36,140 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:36,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:34:36,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:34:36,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 05:34:36,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:36,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-14 05:34:36,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:36,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:36,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:36,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:34:36,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:36,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 05:34:36,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:36,157 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:36,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 05:34:36,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:34:36,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 05:34:36,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:34:36,261 INFO L134 CoverageAnalysis]: Checked inductivity of 2194 backedges. 483 proven. 1530 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2020-10-14 05:34:36,261 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1601211733] [2020-10-14 05:34:36,261 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:34:36,262 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-14 05:34:36,262 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941289176] [2020-10-14 05:34:36,262 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-14 05:34:36,262 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:34:36,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-14 05:34:36,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=211, Invalid=781, Unknown=0, NotChecked=0, Total=992 [2020-10-14 05:34:36,263 INFO L87 Difference]: Start difference. First operand 2578 states and 2882 transitions. Second operand 32 states. [2020-10-14 05:34:38,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:34:38,885 INFO L93 Difference]: Finished difference Result 3200 states and 3610 transitions. [2020-10-14 05:34:38,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-10-14 05:34:38,886 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 147 [2020-10-14 05:34:38,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:34:38,896 INFO L225 Difference]: With dead ends: 3200 [2020-10-14 05:34:38,896 INFO L226 Difference]: Without dead ends: 2951 [2020-10-14 05:34:38,899 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 851 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1316, Invalid=3940, Unknown=0, NotChecked=0, Total=5256 [2020-10-14 05:34:38,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2951 states. [2020-10-14 05:34:39,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2951 to 2698. [2020-10-14 05:34:39,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2698 states. [2020-10-14 05:34:39,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2698 states to 2698 states and 3012 transitions. [2020-10-14 05:34:39,111 INFO L78 Accepts]: Start accepts. Automaton has 2698 states and 3012 transitions. Word has length 147 [2020-10-14 05:34:39,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:34:39,111 INFO L479 AbstractCegarLoop]: Abstraction has 2698 states and 3012 transitions. [2020-10-14 05:34:39,111 INFO L480 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-14 05:34:39,111 INFO L276 IsEmpty]: Start isEmpty. Operand 2698 states and 3012 transitions. [2020-10-14 05:34:39,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-10-14 05:34:39,118 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:34:39,118 INFO L422 BasicCegarLoop]: trace histogram [38, 38, 27, 11, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:34:39,118 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-14 05:34:39,118 INFO L427 AbstractCegarLoop]: === Iteration 34 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:34:39,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:34:39,119 INFO L82 PathProgramCache]: Analyzing trace with hash -1009430970, now seen corresponding path program 14 times [2020-10-14 05:34:39,119 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:34:39,119 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1539685425] [2020-10-14 05:34:39,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:34:39,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:39,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:39,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:39,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:39,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:39,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:39,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:39,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:39,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:39,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:39,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:39,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:44,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:44,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-10-14 05:34:44,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 05:34:44,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-14 05:34:44,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:44,144 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:44,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-14 05:34:44,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 05:34:44,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-10-14 05:34:44,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:44,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:34:44,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:44,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:44,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:44,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:34:44,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:44,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:34:44,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:44,634 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:44,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:34:44,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:34:44,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 05:34:44,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:44,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:34:44,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:44,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:44,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:44,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:34:44,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:44,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:34:44,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:44,638 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:44,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:34:44,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:34:44,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 05:34:44,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:44,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-14 05:34:44,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:44,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:44,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:44,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:34:44,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:44,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:34:44,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:44,644 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:44,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 05:34:44,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:34:44,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 05:34:44,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:44,725 INFO L134 CoverageAnalysis]: Checked inductivity of 2194 backedges. 392 proven. 1600 refuted. 0 times theorem prover too weak. 202 trivial. 0 not checked. [2020-10-14 05:34:44,725 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1539685425] [2020-10-14 05:34:44,725 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:34:44,725 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-14 05:34:44,725 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111722674] [2020-10-14 05:34:44,726 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-14 05:34:44,726 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:34:44,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-14 05:34:44,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=217, Invalid=775, Unknown=0, NotChecked=0, Total=992 [2020-10-14 05:34:44,727 INFO L87 Difference]: Start difference. First operand 2698 states and 3012 transitions. Second operand 32 states. [2020-10-14 05:34:47,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:34:47,264 INFO L93 Difference]: Finished difference Result 3252 states and 3659 transitions. [2020-10-14 05:34:47,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-10-14 05:34:47,265 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 147 [2020-10-14 05:34:47,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:34:47,276 INFO L225 Difference]: With dead ends: 3252 [2020-10-14 05:34:47,276 INFO L226 Difference]: Without dead ends: 3012 [2020-10-14 05:34:47,279 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 788 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1284, Invalid=3828, Unknown=0, NotChecked=0, Total=5112 [2020-10-14 05:34:47,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3012 states. [2020-10-14 05:34:47,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3012 to 2804. [2020-10-14 05:34:47,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2804 states. [2020-10-14 05:34:47,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2804 states to 2804 states and 3126 transitions. [2020-10-14 05:34:47,517 INFO L78 Accepts]: Start accepts. Automaton has 2804 states and 3126 transitions. Word has length 147 [2020-10-14 05:34:47,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:34:47,518 INFO L479 AbstractCegarLoop]: Abstraction has 2804 states and 3126 transitions. [2020-10-14 05:34:47,518 INFO L480 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-14 05:34:47,518 INFO L276 IsEmpty]: Start isEmpty. Operand 2804 states and 3126 transitions. [2020-10-14 05:34:47,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-10-14 05:34:47,523 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:34:47,523 INFO L422 BasicCegarLoop]: trace histogram [38, 38, 28, 10, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:34:47,523 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-14 05:34:47,523 INFO L427 AbstractCegarLoop]: === Iteration 35 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:34:47,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:34:47,524 INFO L82 PathProgramCache]: Analyzing trace with hash -1827079420, now seen corresponding path program 15 times [2020-10-14 05:34:47,524 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:34:47,524 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [962088038] [2020-10-14 05:34:47,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:34:47,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:47,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:47,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:47,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:47,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:47,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:47,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:47,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:47,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:47,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:47,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:47,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:52,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:52,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-10-14 05:34:52,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 05:34:52,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 05:34:52,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:52,545 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:52,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-14 05:34:52,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 05:34:52,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-14 05:34:52,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:53,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:34:53,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:53,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:53,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:53,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:34:53,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:53,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:34:53,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:53,062 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:53,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:34:53,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:34:53,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 05:34:53,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:53,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:34:53,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:53,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:53,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:53,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:34:53,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:53,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:34:53,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:53,066 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:53,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:34:53,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:34:53,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 05:34:53,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:53,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-14 05:34:53,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:53,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:53,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:53,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:34:53,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:53,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:34:53,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:53,070 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:53,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:34:53,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:34:53,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 05:34:53,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:53,090 INFO L134 CoverageAnalysis]: Checked inductivity of 2194 backedges. 295 proven. 1705 refuted. 0 times theorem prover too weak. 194 trivial. 0 not checked. [2020-10-14 05:34:53,090 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [962088038] [2020-10-14 05:34:53,090 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:34:53,090 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-14 05:34:53,090 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336312455] [2020-10-14 05:34:53,091 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-14 05:34:53,091 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:34:53,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-14 05:34:53,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=699, Unknown=0, NotChecked=0, Total=930 [2020-10-14 05:34:53,092 INFO L87 Difference]: Start difference. First operand 2804 states and 3126 transitions. Second operand 31 states. [2020-10-14 05:34:55,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:34:55,556 INFO L93 Difference]: Finished difference Result 3237 states and 3635 transitions. [2020-10-14 05:34:55,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-10-14 05:34:55,557 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 147 [2020-10-14 05:34:55,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:34:55,564 INFO L225 Difference]: With dead ends: 3237 [2020-10-14 05:34:55,565 INFO L226 Difference]: Without dead ends: 3006 [2020-10-14 05:34:55,567 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 635 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1327, Invalid=3229, Unknown=0, NotChecked=0, Total=4556 [2020-10-14 05:34:55,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3006 states. [2020-10-14 05:34:55,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3006 to 2795. [2020-10-14 05:34:55,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2795 states. [2020-10-14 05:34:55,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2795 states to 2795 states and 3111 transitions. [2020-10-14 05:34:55,802 INFO L78 Accepts]: Start accepts. Automaton has 2795 states and 3111 transitions. Word has length 147 [2020-10-14 05:34:55,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:34:55,803 INFO L479 AbstractCegarLoop]: Abstraction has 2795 states and 3111 transitions. [2020-10-14 05:34:55,803 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-14 05:34:55,803 INFO L276 IsEmpty]: Start isEmpty. Operand 2795 states and 3111 transitions. [2020-10-14 05:34:55,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-10-14 05:34:55,807 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:34:55,807 INFO L422 BasicCegarLoop]: trace histogram [38, 38, 29, 9, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:34:55,808 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-14 05:34:55,808 INFO L427 AbstractCegarLoop]: === Iteration 36 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:34:55,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:34:55,808 INFO L82 PathProgramCache]: Analyzing trace with hash 879539974, now seen corresponding path program 16 times [2020-10-14 05:34:55,808 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:34:55,809 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1990109246] [2020-10-14 05:34:55,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:34:55,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:55,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:55,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:55,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:55,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:56,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:56,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:56,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:56,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:56,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:56,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:56,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:00,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:00,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-10-14 05:35:00,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 05:35:00,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-14 05:35:00,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:00,830 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:00,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-14 05:35:00,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 05:35:00,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-10-14 05:35:00,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:35:01,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:35:01,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:01,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:01,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:01,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:35:01,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:01,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:35:01,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:01,387 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:01,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:35:01,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:35:01,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 05:35:01,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:35:01,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:35:01,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:01,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:01,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:01,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:35:01,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:01,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:35:01,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:01,390 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:01,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:35:01,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:35:01,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 05:35:01,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:35:01,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-14 05:35:01,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:01,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:01,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:01,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:35:01,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:01,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:35:01,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:01,394 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:01,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:35:01,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:35:01,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 05:35:01,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:35:01,413 INFO L134 CoverageAnalysis]: Checked inductivity of 2194 backedges. 192 proven. 1813 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2020-10-14 05:35:01,413 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1990109246] [2020-10-14 05:35:01,414 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:35:01,414 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-14 05:35:01,414 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533648398] [2020-10-14 05:35:01,414 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-14 05:35:01,414 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:35:01,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-14 05:35:01,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=250, Invalid=742, Unknown=0, NotChecked=0, Total=992 [2020-10-14 05:35:01,415 INFO L87 Difference]: Start difference. First operand 2795 states and 3111 transitions. Second operand 32 states. [2020-10-14 05:35:03,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:35:03,979 INFO L93 Difference]: Finished difference Result 3258 states and 3662 transitions. [2020-10-14 05:35:03,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-10-14 05:35:03,979 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 147 [2020-10-14 05:35:03,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:35:03,986 INFO L225 Difference]: With dead ends: 3258 [2020-10-14 05:35:03,986 INFO L226 Difference]: Without dead ends: 3036 [2020-10-14 05:35:03,988 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 672 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1412, Invalid=3418, Unknown=0, NotChecked=0, Total=4830 [2020-10-14 05:35:03,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3036 states. [2020-10-14 05:35:04,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3036 to 2789. [2020-10-14 05:35:04,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2789 states. [2020-10-14 05:35:04,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2789 states to 2789 states and 3099 transitions. [2020-10-14 05:35:04,262 INFO L78 Accepts]: Start accepts. Automaton has 2789 states and 3099 transitions. Word has length 147 [2020-10-14 05:35:04,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:35:04,262 INFO L479 AbstractCegarLoop]: Abstraction has 2789 states and 3099 transitions. [2020-10-14 05:35:04,262 INFO L480 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-14 05:35:04,262 INFO L276 IsEmpty]: Start isEmpty. Operand 2789 states and 3099 transitions. [2020-10-14 05:35:04,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-10-14 05:35:04,268 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:35:04,268 INFO L422 BasicCegarLoop]: trace histogram [38, 38, 30, 8, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:35:04,269 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-14 05:35:04,269 INFO L427 AbstractCegarLoop]: === Iteration 37 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:35:04,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:35:04,269 INFO L82 PathProgramCache]: Analyzing trace with hash -131577276, now seen corresponding path program 17 times [2020-10-14 05:35:04,269 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:35:04,270 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [484032041] [2020-10-14 05:35:04,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:35:04,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:04,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:04,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:04,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:04,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:04,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:04,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:04,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:05,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:05,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:06,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:06,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:06,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:06,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:06,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:07,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:07,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:07,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:08,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:08,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:09,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:09,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:09,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-10-14 05:35:09,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 20 [2020-10-14 05:35:09,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 05:35:09,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:09,298 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:09,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-14 05:35:09,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-14 05:35:09,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-14 05:35:09,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:35:09,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:35:09,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:09,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:09,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:09,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:35:09,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:09,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:35:09,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:09,788 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:09,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:35:09,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:35:09,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:35:09,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:35:09,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:35:09,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:09,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:09,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:09,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:35:09,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:09,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:35:09,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:09,791 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:09,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:35:09,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:35:09,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:35:09,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:35:09,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-14 05:35:09,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:09,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:09,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:09,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:35:09,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:09,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:35:09,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:09,795 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:09,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:35:09,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:35:09,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 05:35:09,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:35:09,812 INFO L134 CoverageAnalysis]: Checked inductivity of 2194 backedges. 785 proven. 1326 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2020-10-14 05:35:09,812 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [484032041] [2020-10-14 05:35:09,812 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:35:09,813 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-14 05:35:09,813 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076407145] [2020-10-14 05:35:09,813 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-14 05:35:09,813 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:35:09,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-14 05:35:09,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=244, Invalid=748, Unknown=0, NotChecked=0, Total=992 [2020-10-14 05:35:09,814 INFO L87 Difference]: Start difference. First operand 2789 states and 3099 transitions. Second operand 32 states. [2020-10-14 05:35:11,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:35:11,740 INFO L93 Difference]: Finished difference Result 5560 states and 6190 transitions. [2020-10-14 05:35:11,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2020-10-14 05:35:11,741 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 147 [2020-10-14 05:35:11,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:35:11,749 INFO L225 Difference]: With dead ends: 5560 [2020-10-14 05:35:11,749 INFO L226 Difference]: Without dead ends: 3330 [2020-10-14 05:35:11,755 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1462 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1785, Invalid=4535, Unknown=0, NotChecked=0, Total=6320 [2020-10-14 05:35:11,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3330 states. [2020-10-14 05:35:11,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3330 to 3086. [2020-10-14 05:35:11,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3086 states. [2020-10-14 05:35:11,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3086 states to 3086 states and 3452 transitions. [2020-10-14 05:35:11,997 INFO L78 Accepts]: Start accepts. Automaton has 3086 states and 3452 transitions. Word has length 147 [2020-10-14 05:35:11,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:35:11,997 INFO L479 AbstractCegarLoop]: Abstraction has 3086 states and 3452 transitions. [2020-10-14 05:35:11,997 INFO L480 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-14 05:35:11,997 INFO L276 IsEmpty]: Start isEmpty. Operand 3086 states and 3452 transitions. [2020-10-14 05:35:12,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-10-14 05:35:12,002 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:35:12,002 INFO L422 BasicCegarLoop]: trace histogram [38, 38, 31, 7, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:35:12,003 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-14 05:35:12,003 INFO L427 AbstractCegarLoop]: === Iteration 38 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:35:12,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:35:12,003 INFO L82 PathProgramCache]: Analyzing trace with hash 1469493830, now seen corresponding path program 18 times [2020-10-14 05:35:12,003 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:35:12,004 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1780145455] [2020-10-14 05:35:12,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:35:12,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:12,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:12,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:12,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:12,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:12,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:12,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:14,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:14,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:14,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:15,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:15,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:15,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:15,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:16,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:16,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:16,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:17,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:17,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-10-14 05:35:17,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-14 05:35:17,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 05:35:17,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:17,021 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:17,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-14 05:35:17,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-14 05:35:17,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-14 05:35:17,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:35:17,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:35:17,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:17,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:17,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:17,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:35:17,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:17,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:35:17,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:17,536 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:17,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:35:17,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:35:17,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:35:17,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:35:17,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:35:17,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:17,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:17,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:17,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:35:17,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:17,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:35:17,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:17,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:17,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:35:17,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:35:17,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:35:17,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:35:17,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-14 05:35:17,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:17,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:17,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:17,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:35:17,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:17,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:35:17,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:17,543 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:17,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:35:17,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:35:17,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 05:35:17,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:35:17,558 INFO L134 CoverageAnalysis]: Checked inductivity of 2194 backedges. 829 proven. 1285 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2020-10-14 05:35:17,558 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1780145455] [2020-10-14 05:35:17,558 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:35:17,559 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-14 05:35:17,559 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431813015] [2020-10-14 05:35:17,559 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-14 05:35:17,559 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:35:17,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-14 05:35:17,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=243, Invalid=749, Unknown=0, NotChecked=0, Total=992 [2020-10-14 05:35:17,560 INFO L87 Difference]: Start difference. First operand 3086 states and 3452 transitions. Second operand 32 states. [2020-10-14 05:35:18,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:35:18,782 INFO L93 Difference]: Finished difference Result 6136 states and 6879 transitions. [2020-10-14 05:35:18,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-10-14 05:35:18,783 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 147 [2020-10-14 05:35:18,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:35:18,789 INFO L225 Difference]: With dead ends: 6136 [2020-10-14 05:35:18,790 INFO L226 Difference]: Without dead ends: 3716 [2020-10-14 05:35:18,795 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 690 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=979, Invalid=2561, Unknown=0, NotChecked=0, Total=3540 [2020-10-14 05:35:18,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3716 states. [2020-10-14 05:35:19,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3716 to 3485. [2020-10-14 05:35:19,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3485 states. [2020-10-14 05:35:19,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3485 states to 3485 states and 3922 transitions. [2020-10-14 05:35:19,068 INFO L78 Accepts]: Start accepts. Automaton has 3485 states and 3922 transitions. Word has length 147 [2020-10-14 05:35:19,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:35:19,068 INFO L479 AbstractCegarLoop]: Abstraction has 3485 states and 3922 transitions. [2020-10-14 05:35:19,069 INFO L480 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-14 05:35:19,069 INFO L276 IsEmpty]: Start isEmpty. Operand 3485 states and 3922 transitions. [2020-10-14 05:35:19,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-10-14 05:35:19,074 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:35:19,075 INFO L422 BasicCegarLoop]: trace histogram [38, 38, 32, 6, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:35:19,075 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-14 05:35:19,075 INFO L427 AbstractCegarLoop]: === Iteration 39 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:35:19,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:35:19,078 INFO L82 PathProgramCache]: Analyzing trace with hash -149481084, now seen corresponding path program 19 times [2020-10-14 05:35:19,078 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:35:19,078 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [670118947] [2020-10-14 05:35:19,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:35:19,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:19,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:19,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:19,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:19,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:19,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:20,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:21,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:21,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:21,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:21,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:22,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:22,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:22,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:24,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:24,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-10-14 05:35:24,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-14 05:35:24,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 05:35:24,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:24,094 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:24,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-14 05:35:24,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 05:35:24,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-14 05:35:24,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:35:24,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:35:24,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:24,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:24,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:24,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:35:24,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:24,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:35:24,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:24,457 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:24,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:35:24,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:35:24,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 05:35:24,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:35:24,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:35:24,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:24,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:24,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:24,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:35:24,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:24,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:35:24,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:24,460 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:24,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:35:24,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:35:24,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 05:35:24,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:35:24,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-14 05:35:24,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:24,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:24,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:24,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:35:24,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:24,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:35:24,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:24,465 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:24,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 05:35:24,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 05:35:24,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 05:35:24,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:35:24,523 INFO L134 CoverageAnalysis]: Checked inductivity of 2194 backedges. 1130 proven. 532 refuted. 0 times theorem prover too weak. 532 trivial. 0 not checked. [2020-10-14 05:35:24,523 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [670118947] [2020-10-14 05:35:24,524 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:35:24,524 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-14 05:35:24,524 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643911291] [2020-10-14 05:35:24,524 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-14 05:35:24,524 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:35:24,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-14 05:35:24,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=239, Invalid=411, Unknown=0, NotChecked=0, Total=650 [2020-10-14 05:35:24,525 INFO L87 Difference]: Start difference. First operand 3485 states and 3922 transitions. Second operand 26 states. [2020-10-14 05:35:25,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:35:25,522 INFO L93 Difference]: Finished difference Result 4580 states and 5144 transitions. [2020-10-14 05:35:25,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-14 05:35:25,523 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 147 [2020-10-14 05:35:25,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:35:25,527 INFO L225 Difference]: With dead ends: 4580 [2020-10-14 05:35:25,528 INFO L226 Difference]: Without dead ends: 4123 [2020-10-14 05:35:25,529 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 307 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=717, Invalid=1635, Unknown=0, NotChecked=0, Total=2352 [2020-10-14 05:35:25,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4123 states. [2020-10-14 05:35:25,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4123 to 3557. [2020-10-14 05:35:25,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3557 states. [2020-10-14 05:35:25,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3557 states to 3557 states and 3985 transitions. [2020-10-14 05:35:25,727 INFO L78 Accepts]: Start accepts. Automaton has 3557 states and 3985 transitions. Word has length 147 [2020-10-14 05:35:25,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:35:25,728 INFO L479 AbstractCegarLoop]: Abstraction has 3557 states and 3985 transitions. [2020-10-14 05:35:25,728 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-14 05:35:25,728 INFO L276 IsEmpty]: Start isEmpty. Operand 3557 states and 3985 transitions. [2020-10-14 05:35:25,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-10-14 05:35:25,733 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:35:25,733 INFO L422 BasicCegarLoop]: trace histogram [40, 40, 38, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:35:25,733 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-14 05:35:25,733 INFO L427 AbstractCegarLoop]: === Iteration 40 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:35:25,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:35:25,734 INFO L82 PathProgramCache]: Analyzing trace with hash -718384134, now seen corresponding path program 20 times [2020-10-14 05:35:25,734 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:35:25,734 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [289176820] [2020-10-14 05:35:25,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:35:25,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:25,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:25,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:25,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:25,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:25,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:26,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:26,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:26,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:26,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:26,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:26,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:26,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:27,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:27,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:27,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:27,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:27,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:27,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:28,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:28,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:28,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:28,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:28,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:29,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:29,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:29,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:29,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:30,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:30,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-10-14 05:35:30,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 27 [2020-10-14 05:35:30,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 05:35:30,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:30,749 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:30,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-14 05:35:30,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 05:35:30,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-14 05:35:30,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:35:31,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:35:31,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:31,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:31,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:31,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:35:31,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:31,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:35:31,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:31,394 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:31,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:35:31,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:35:31,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 05:35:31,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:35:31,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:35:31,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:31,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:31,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:31,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:35:31,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:31,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:35:31,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:31,397 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:31,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:35:31,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:35:31,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 05:35:31,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:35:31,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-14 05:35:31,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:31,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:31,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:31,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:35:31,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:31,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:35:31,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:31,401 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:31,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:35:31,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:35:31,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 05:35:31,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:35:31,422 INFO L134 CoverageAnalysis]: Checked inductivity of 2429 backedges. 1071 proven. 1136 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2020-10-14 05:35:31,422 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [289176820] [2020-10-14 05:35:31,422 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:35:31,422 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-10-14 05:35:31,422 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957128386] [2020-10-14 05:35:31,423 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-14 05:35:31,423 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:35:31,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-14 05:35:31,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=303, Invalid=819, Unknown=0, NotChecked=0, Total=1122 [2020-10-14 05:35:31,423 INFO L87 Difference]: Start difference. First operand 3557 states and 3985 transitions. Second operand 34 states. [2020-10-14 05:35:34,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:35:34,758 INFO L93 Difference]: Finished difference Result 6166 states and 7079 transitions. [2020-10-14 05:35:34,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2020-10-14 05:35:34,759 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 153 [2020-10-14 05:35:34,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:35:34,764 INFO L225 Difference]: With dead ends: 6166 [2020-10-14 05:35:34,764 INFO L226 Difference]: Without dead ends: 5568 [2020-10-14 05:35:34,767 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1441 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=2173, Invalid=5137, Unknown=0, NotChecked=0, Total=7310 [2020-10-14 05:35:34,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5568 states. [2020-10-14 05:35:34,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5568 to 3507. [2020-10-14 05:35:34,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3507 states. [2020-10-14 05:35:34,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3507 states to 3507 states and 3933 transitions. [2020-10-14 05:35:34,969 INFO L78 Accepts]: Start accepts. Automaton has 3507 states and 3933 transitions. Word has length 153 [2020-10-14 05:35:34,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:35:34,969 INFO L479 AbstractCegarLoop]: Abstraction has 3507 states and 3933 transitions. [2020-10-14 05:35:34,969 INFO L480 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-10-14 05:35:34,969 INFO L276 IsEmpty]: Start isEmpty. Operand 3507 states and 3933 transitions. [2020-10-14 05:35:34,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-10-14 05:35:34,972 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:35:34,973 INFO L422 BasicCegarLoop]: trace histogram [40, 40, 32, 8, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:35:34,973 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-14 05:35:34,973 INFO L427 AbstractCegarLoop]: === Iteration 41 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:35:34,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:35:34,973 INFO L82 PathProgramCache]: Analyzing trace with hash -1989611718, now seen corresponding path program 21 times [2020-10-14 05:35:34,973 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:35:34,973 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2012555383] [2020-10-14 05:35:34,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:35:34,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:34,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:35,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:35,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:35,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:35,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:37,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:37,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:37,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:37,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:38,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:38,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:39,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:39,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:39,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-10-14 05:35:39,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-14 05:35:39,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 05:35:39,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:39,987 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:39,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-14 05:35:39,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-14 05:35:39,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-14 05:35:39,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:35:40,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:35:40,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:40,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:40,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:40,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:35:40,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:40,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:35:40,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:40,515 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:40,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:35:40,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:35:40,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:35:40,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:35:40,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:35:40,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:40,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:40,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:40,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:35:40,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:40,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:35:40,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:40,518 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:40,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:35:40,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:35:40,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:35:40,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:35:40,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-14 05:35:40,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:40,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:40,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:40,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:35:40,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:40,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:35:40,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:40,521 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:40,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:35:40,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:35:40,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 05:35:40,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:35:40,538 INFO L134 CoverageAnalysis]: Checked inductivity of 2429 backedges. 904 proven. 1445 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2020-10-14 05:35:40,538 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2012555383] [2020-10-14 05:35:40,538 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:35:40,538 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-10-14 05:35:40,538 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995463573] [2020-10-14 05:35:40,539 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-14 05:35:40,539 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:35:40,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-14 05:35:40,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=275, Invalid=847, Unknown=0, NotChecked=0, Total=1122 [2020-10-14 05:35:40,539 INFO L87 Difference]: Start difference. First operand 3507 states and 3933 transitions. Second operand 34 states. [2020-10-14 05:35:41,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:35:41,905 INFO L93 Difference]: Finished difference Result 6993 states and 7855 transitions. [2020-10-14 05:35:41,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2020-10-14 05:35:41,906 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 153 [2020-10-14 05:35:41,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:35:41,911 INFO L225 Difference]: With dead ends: 6993 [2020-10-14 05:35:41,912 INFO L226 Difference]: Without dead ends: 4247 [2020-10-14 05:35:41,915 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 792 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1116, Invalid=2916, Unknown=0, NotChecked=0, Total=4032 [2020-10-14 05:35:41,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4247 states. [2020-10-14 05:35:42,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4247 to 3999. [2020-10-14 05:35:42,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3999 states. [2020-10-14 05:35:42,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3999 states to 3999 states and 4509 transitions. [2020-10-14 05:35:42,129 INFO L78 Accepts]: Start accepts. Automaton has 3999 states and 4509 transitions. Word has length 153 [2020-10-14 05:35:42,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:35:42,130 INFO L479 AbstractCegarLoop]: Abstraction has 3999 states and 4509 transitions. [2020-10-14 05:35:42,130 INFO L480 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-10-14 05:35:42,130 INFO L276 IsEmpty]: Start isEmpty. Operand 3999 states and 4509 transitions. [2020-10-14 05:35:42,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-10-14 05:35:42,135 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:35:42,135 INFO L422 BasicCegarLoop]: trace histogram [40, 40, 33, 7, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:35:42,135 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-14 05:35:42,135 INFO L427 AbstractCegarLoop]: === Iteration 42 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:35:42,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:35:42,136 INFO L82 PathProgramCache]: Analyzing trace with hash -388540612, now seen corresponding path program 22 times [2020-10-14 05:35:42,136 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:35:42,136 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1447469091] [2020-10-14 05:35:42,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:35:42,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:42,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:42,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:42,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:42,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:43,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:43,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:43,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:43,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:47,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:47,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-10-14 05:35:47,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 05:35:47,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 05:35:47,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:47,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:47,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-14 05:35:47,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 05:35:47,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-14 05:35:47,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:35:47,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:35:47,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:47,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:47,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:47,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:35:47,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:47,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:35:47,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:47,582 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:47,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:35:47,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:35:47,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 05:35:47,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:35:47,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:35:47,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:47,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:47,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:47,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:35:47,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:47,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:35:47,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:47,585 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:47,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:35:47,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:35:47,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 05:35:47,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:35:47,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-14 05:35:47,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:47,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:47,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:47,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:35:47,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:47,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:35:47,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:47,590 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:47,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 05:35:47,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 05:35:47,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 05:35:47,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:35:47,652 INFO L134 CoverageAnalysis]: Checked inductivity of 2429 backedges. 1249 proven. 590 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2020-10-14 05:35:47,653 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1447469091] [2020-10-14 05:35:47,653 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:35:47,653 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-14 05:35:47,653 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200222771] [2020-10-14 05:35:47,653 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-14 05:35:47,653 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:35:47,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-14 05:35:47,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=280, Invalid=422, Unknown=0, NotChecked=0, Total=702 [2020-10-14 05:35:47,654 INFO L87 Difference]: Start difference. First operand 3999 states and 4509 transitions. Second operand 27 states. [2020-10-14 05:35:48,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:35:48,470 INFO L93 Difference]: Finished difference Result 5043 states and 5693 transitions. [2020-10-14 05:35:48,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-14 05:35:48,470 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 153 [2020-10-14 05:35:48,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:35:48,479 INFO L225 Difference]: With dead ends: 5043 [2020-10-14 05:35:48,479 INFO L226 Difference]: Without dead ends: 4577 [2020-10-14 05:35:48,483 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=346, Invalid=646, Unknown=0, NotChecked=0, Total=992 [2020-10-14 05:35:48,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4577 states. [2020-10-14 05:35:48,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4577 to 4187. [2020-10-14 05:35:48,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4187 states. [2020-10-14 05:35:48,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4187 states to 4187 states and 4768 transitions. [2020-10-14 05:35:48,801 INFO L78 Accepts]: Start accepts. Automaton has 4187 states and 4768 transitions. Word has length 153 [2020-10-14 05:35:48,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:35:48,801 INFO L479 AbstractCegarLoop]: Abstraction has 4187 states and 4768 transitions. [2020-10-14 05:35:48,801 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-14 05:35:48,801 INFO L276 IsEmpty]: Start isEmpty. Operand 4187 states and 4768 transitions. [2020-10-14 05:35:48,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-10-14 05:35:48,804 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:35:48,804 INFO L422 BasicCegarLoop]: trace histogram [41, 41, 39, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:35:48,805 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-14 05:35:48,805 INFO L427 AbstractCegarLoop]: === Iteration 43 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:35:48,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:35:48,805 INFO L82 PathProgramCache]: Analyzing trace with hash 170063690, now seen corresponding path program 23 times [2020-10-14 05:35:48,805 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:35:48,805 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1433066550] [2020-10-14 05:35:48,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:35:48,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:48,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:48,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:48,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:49,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:49,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:49,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:49,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:49,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:49,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:49,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:50,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:50,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:51,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:51,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:53,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:53,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-10-14 05:35:53,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-14 05:35:53,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 05:35:53,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:53,822 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:53,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-14 05:35:53,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 05:35:53,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-14 05:35:53,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:35:54,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:35:54,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:54,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:54,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:54,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:35:54,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:54,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:35:54,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:54,437 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:54,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:35:54,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:35:54,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 05:35:54,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:35:54,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:35:54,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:54,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:54,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:54,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:35:54,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:54,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:35:54,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:54,441 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:54,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:35:54,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:35:54,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 05:35:54,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:35:54,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-14 05:35:54,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:54,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:54,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:54,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:35:54,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:54,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 05:35:54,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:54,447 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:54,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 05:35:54,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:35:54,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 05:35:54,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:35:54,571 INFO L134 CoverageAnalysis]: Checked inductivity of 2551 backedges. 1195 proven. 1055 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2020-10-14 05:35:54,571 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1433066550] [2020-10-14 05:35:54,571 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:35:54,571 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2020-10-14 05:35:54,572 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790292153] [2020-10-14 05:35:54,572 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-10-14 05:35:54,572 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:35:54,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-10-14 05:35:54,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=313, Invalid=877, Unknown=0, NotChecked=0, Total=1190 [2020-10-14 05:35:54,573 INFO L87 Difference]: Start difference. First operand 4187 states and 4768 transitions. Second operand 35 states. [2020-10-14 05:35:58,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:35:58,491 INFO L93 Difference]: Finished difference Result 7473 states and 8687 transitions. [2020-10-14 05:35:58,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2020-10-14 05:35:58,491 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 156 [2020-10-14 05:35:58,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:35:58,504 INFO L225 Difference]: With dead ends: 7473 [2020-10-14 05:35:58,504 INFO L226 Difference]: Without dead ends: 7034 [2020-10-14 05:35:58,510 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1719 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=2189, Invalid=6001, Unknown=0, NotChecked=0, Total=8190 [2020-10-14 05:35:58,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7034 states. [2020-10-14 05:35:58,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7034 to 5107. [2020-10-14 05:35:58,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5107 states. [2020-10-14 05:35:58,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5107 states to 5107 states and 5838 transitions. [2020-10-14 05:35:58,857 INFO L78 Accepts]: Start accepts. Automaton has 5107 states and 5838 transitions. Word has length 156 [2020-10-14 05:35:58,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:35:58,857 INFO L479 AbstractCegarLoop]: Abstraction has 5107 states and 5838 transitions. [2020-10-14 05:35:58,857 INFO L480 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-10-14 05:35:58,857 INFO L276 IsEmpty]: Start isEmpty. Operand 5107 states and 5838 transitions. [2020-10-14 05:35:58,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-10-14 05:35:58,861 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:35:58,862 INFO L422 BasicCegarLoop]: trace histogram [41, 41, 22, 19, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:35:58,862 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-14 05:35:58,862 INFO L427 AbstractCegarLoop]: === Iteration 44 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:35:58,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:35:58,862 INFO L82 PathProgramCache]: Analyzing trace with hash 1683354444, now seen corresponding path program 24 times [2020-10-14 05:35:58,862 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:35:58,862 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1995160923] [2020-10-14 05:35:58,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:35:58,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:58,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:58,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:58,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:59,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:59,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:59,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:59,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:59,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:59,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:00,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:00,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:00,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:00,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:01,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:03,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:36:03,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-10-14 05:36:03,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-14 05:36:03,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-14 05:36:03,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:36:03,883 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:36:03,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-14 05:36:03,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 05:36:03,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-14 05:36:03,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:36:04,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:36:04,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:36:04,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:04,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:36:04,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:36:04,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:36:04,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:36:04,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:36:04,518 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:36:04,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:36:04,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:36:04,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 05:36:04,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:36:04,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:36:04,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:36:04,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:04,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:36:04,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:36:04,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:36:04,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:36:04,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:36:04,521 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:36:04,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:36:04,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:36:04,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 05:36:04,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:36:04,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-14 05:36:04,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:36:04,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:04,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:36:04,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:36:04,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:36:04,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:36:04,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:36:04,527 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:36:04,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:36:04,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:36:04,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 05:36:04,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:36:04,549 INFO L134 CoverageAnalysis]: Checked inductivity of 2551 backedges. 865 proven. 1546 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2020-10-14 05:36:04,550 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1995160923] [2020-10-14 05:36:04,550 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:36:04,550 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-10-14 05:36:04,550 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139595749] [2020-10-14 05:36:04,550 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-14 05:36:04,550 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:36:04,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-14 05:36:04,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=267, Invalid=855, Unknown=0, NotChecked=0, Total=1122 [2020-10-14 05:36:04,551 INFO L87 Difference]: Start difference. First operand 5107 states and 5838 transitions. Second operand 34 states. [2020-10-14 05:36:07,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:36:07,530 INFO L93 Difference]: Finished difference Result 6798 states and 7833 transitions. [2020-10-14 05:36:07,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2020-10-14 05:36:07,530 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 156 [2020-10-14 05:36:07,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:36:07,542 INFO L225 Difference]: With dead ends: 6798 [2020-10-14 05:36:07,542 INFO L226 Difference]: Without dead ends: 6430 [2020-10-14 05:36:07,547 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1249 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1931, Invalid=4711, Unknown=0, NotChecked=0, Total=6642 [2020-10-14 05:36:07,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6430 states. [2020-10-14 05:36:07,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6430 to 5030. [2020-10-14 05:36:07,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5030 states. [2020-10-14 05:36:07,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5030 states to 5030 states and 5753 transitions. [2020-10-14 05:36:07,958 INFO L78 Accepts]: Start accepts. Automaton has 5030 states and 5753 transitions. Word has length 156 [2020-10-14 05:36:07,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:36:07,958 INFO L479 AbstractCegarLoop]: Abstraction has 5030 states and 5753 transitions. [2020-10-14 05:36:07,958 INFO L480 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-10-14 05:36:07,958 INFO L276 IsEmpty]: Start isEmpty. Operand 5030 states and 5753 transitions. [2020-10-14 05:36:07,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-10-14 05:36:07,963 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:36:07,963 INFO L422 BasicCegarLoop]: trace histogram [41, 41, 33, 8, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:36:07,963 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-14 05:36:07,963 INFO L427 AbstractCegarLoop]: === Iteration 45 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:36:07,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:36:07,964 INFO L82 PathProgramCache]: Analyzing trace with hash 1405933580, now seen corresponding path program 25 times [2020-10-14 05:36:07,964 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:36:07,964 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1779133833] [2020-10-14 05:36:07,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:36:07,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:36:07,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:08,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:08,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:08,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:09,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:09,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:09,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:10,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:12,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:36:12,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-10-14 05:36:12,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 05:36:12,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 05:36:12,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:36:12,980 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:36:12,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-14 05:36:12,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 05:36:12,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-14 05:36:12,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:36:13,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:36:13,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:36:13,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:13,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:36:13,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:36:13,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:36:13,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:36:13,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:36:13,426 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:36:13,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:36:13,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:36:13,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 05:36:13,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:36:13,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:36:13,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:36:13,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:13,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:36:13,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:36:13,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:36:13,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:36:13,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:36:13,430 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:36:13,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:36:13,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:36:13,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 05:36:13,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:36:13,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-14 05:36:13,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:36:13,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:13,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:36:13,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:36:13,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:36:13,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:36:13,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:36:13,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:36:13,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 05:36:13,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 05:36:13,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 05:36:13,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:36:13,535 INFO L134 CoverageAnalysis]: Checked inductivity of 2551 backedges. 1310 proven. 651 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2020-10-14 05:36:13,535 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1779133833] [2020-10-14 05:36:13,535 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:36:13,535 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-14 05:36:13,536 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245794154] [2020-10-14 05:36:13,536 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-14 05:36:13,536 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:36:13,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-14 05:36:13,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=284, Invalid=472, Unknown=0, NotChecked=0, Total=756 [2020-10-14 05:36:13,536 INFO L87 Difference]: Start difference. First operand 5030 states and 5753 transitions. Second operand 28 states. [2020-10-14 05:36:14,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:36:14,816 INFO L93 Difference]: Finished difference Result 6378 states and 7288 transitions. [2020-10-14 05:36:14,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-14 05:36:14,817 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 156 [2020-10-14 05:36:14,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:36:14,827 INFO L225 Difference]: With dead ends: 6378 [2020-10-14 05:36:14,827 INFO L226 Difference]: Without dead ends: 5828 [2020-10-14 05:36:14,830 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 360 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=852, Invalid=1904, Unknown=0, NotChecked=0, Total=2756 [2020-10-14 05:36:14,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5828 states. [2020-10-14 05:36:15,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5828 to 5265. [2020-10-14 05:36:15,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5265 states. [2020-10-14 05:36:15,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5265 states to 5265 states and 5896 transitions. [2020-10-14 05:36:15,205 INFO L78 Accepts]: Start accepts. Automaton has 5265 states and 5896 transitions. Word has length 156 [2020-10-14 05:36:15,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:36:15,205 INFO L479 AbstractCegarLoop]: Abstraction has 5265 states and 5896 transitions. [2020-10-14 05:36:15,205 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-14 05:36:15,205 INFO L276 IsEmpty]: Start isEmpty. Operand 5265 states and 5896 transitions. [2020-10-14 05:36:15,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-10-14 05:36:15,209 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:36:15,210 INFO L422 BasicCegarLoop]: trace histogram [44, 44, 42, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:36:15,210 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-14 05:36:15,210 INFO L427 AbstractCegarLoop]: === Iteration 46 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:36:15,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:36:15,210 INFO L82 PathProgramCache]: Analyzing trace with hash -2064341702, now seen corresponding path program 26 times [2020-10-14 05:36:15,210 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:36:15,210 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [335938992] [2020-10-14 05:36:15,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:36:15,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:36:15,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:15,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:15,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:15,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:15,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:15,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:15,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:15,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:15,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:16,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:16,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:16,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:17,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:18,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:18,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:36:19,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking...