/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-cav19/array_init_var_plus_ind3.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 17:31:43,858 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 17:31:43,860 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 17:31:43,885 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 17:31:43,885 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 17:31:43,886 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 17:31:43,887 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 17:31:43,889 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 17:31:43,891 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 17:31:43,892 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 17:31:43,893 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 17:31:43,894 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 17:31:43,894 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 17:31:43,895 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 17:31:43,896 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 17:31:43,897 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 17:31:43,898 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 17:31:43,899 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 17:31:43,901 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 17:31:43,903 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 17:31:43,904 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 17:31:43,905 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 17:31:43,906 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 17:31:43,907 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 17:31:43,910 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 17:31:43,910 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 17:31:43,910 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 17:31:43,911 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 17:31:43,911 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 17:31:43,912 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 17:31:43,913 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 17:31:43,913 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 17:31:43,914 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 17:31:43,915 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 17:31:43,916 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 17:31:43,916 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 17:31:43,917 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 17:31:43,917 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 17:31:43,917 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 17:31:43,918 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 17:31:43,919 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 17:31:43,919 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 17:31:43,943 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 17:31:43,943 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 17:31:43,944 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 17:31:43,945 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 17:31:43,945 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 17:31:43,945 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 17:31:43,945 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 17:31:43,945 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 17:31:43,946 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 17:31:43,946 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 17:31:43,946 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 17:31:43,946 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 17:31:43,946 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 17:31:43,947 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 17:31:43,947 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 17:31:43,947 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 17:31:43,947 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 17:31:43,947 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 17:31:43,947 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 17:31:43,948 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 17:31:43,948 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 17:31:43,948 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 17:31:43,948 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 17:31:43,948 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 17:31:43,949 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 17:31:43,949 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 17:31:43,949 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 17:31:43,949 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 17:31:43,949 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 17:31:43,950 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 17:31:44,274 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 17:31:44,288 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 17:31:44,294 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 17:31:44,297 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 17:31:44,298 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 17:31:44,298 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-cav19/array_init_var_plus_ind3.c [2020-10-14 17:31:44,362 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1fae3f650/e08cbc1d2fe64bbaa15dfe19f787aa01/FLAG0fadef52e [2020-10-14 17:31:44,817 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 17:31:44,818 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-cav19/array_init_var_plus_ind3.c [2020-10-14 17:31:44,824 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1fae3f650/e08cbc1d2fe64bbaa15dfe19f787aa01/FLAG0fadef52e [2020-10-14 17:31:45,222 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1fae3f650/e08cbc1d2fe64bbaa15dfe19f787aa01 [2020-10-14 17:31:45,233 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 17:31:45,234 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 17:31:45,235 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 17:31:45,235 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 17:31:45,239 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 17:31:45,240 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 05:31:45" (1/1) ... [2020-10-14 17:31:45,243 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59c42496 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:31:45, skipping insertion in model container [2020-10-14 17:31:45,243 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 05:31:45" (1/1) ... [2020-10-14 17:31:45,252 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 17:31:45,270 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 17:31:45,466 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 17:31:45,469 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 17:31:45,490 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 17:31:45,507 INFO L208 MainTranslator]: Completed translation [2020-10-14 17:31:45,507 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:31:45 WrapperNode [2020-10-14 17:31:45,507 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 17:31:45,508 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 17:31:45,508 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 17:31:45,508 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 17:31:45,606 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:31:45" (1/1) ... [2020-10-14 17:31:45,608 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:31:45" (1/1) ... [2020-10-14 17:31:45,616 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:31:45" (1/1) ... [2020-10-14 17:31:45,617 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:31:45" (1/1) ... [2020-10-14 17:31:45,624 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:31:45" (1/1) ... [2020-10-14 17:31:45,629 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:31:45" (1/1) ... [2020-10-14 17:31:45,630 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:31:45" (1/1) ... [2020-10-14 17:31:45,633 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 17:31:45,633 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 17:31:45,633 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 17:31:45,634 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 17:31:45,634 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:31:45" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 17:31:45,691 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 17:31:45,692 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 17:31:45,692 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-14 17:31:45,692 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-14 17:31:45,692 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 17:31:45,692 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 17:31:45,692 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 17:31:45,693 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-14 17:31:45,693 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-14 17:31:45,693 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 17:31:45,693 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 17:31:45,693 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-14 17:31:45,693 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-14 17:31:45,694 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-14 17:31:45,694 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 17:31:45,694 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 17:31:45,694 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 17:31:45,978 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 17:31:45,978 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-14 17:31:45,982 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 05:31:45 BoogieIcfgContainer [2020-10-14 17:31:45,982 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 17:31:45,984 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 17:31:45,984 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 17:31:45,987 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 17:31:45,987 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 05:31:45" (1/3) ... [2020-10-14 17:31:45,988 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7194495a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 05:31:45, skipping insertion in model container [2020-10-14 17:31:45,988 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:31:45" (2/3) ... [2020-10-14 17:31:45,989 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7194495a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 05:31:45, skipping insertion in model container [2020-10-14 17:31:45,989 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 05:31:45" (3/3) ... [2020-10-14 17:31:45,991 INFO L109 eAbstractionObserver]: Analyzing ICFG array_init_var_plus_ind3.c [2020-10-14 17:31:46,001 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 17:31:46,008 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 17:31:46,022 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 17:31:46,046 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 17:31:46,046 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 17:31:46,046 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 17:31:46,046 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 17:31:46,047 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 17:31:46,047 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 17:31:46,047 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 17:31:46,047 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 17:31:46,063 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2020-10-14 17:31:46,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-14 17:31:46,070 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:31:46,071 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:31:46,071 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:31:46,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:31:46,077 INFO L82 PathProgramCache]: Analyzing trace with hash 1594784639, now seen corresponding path program 1 times [2020-10-14 17:31:46,084 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:31:46,085 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2101442070] [2020-10-14 17:31:46,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:31:46,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:31:46,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:31:46,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:31:46,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:31:46,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 17:31:46,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:31:46,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 344 [2020-10-14 17:31:46,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:31:46,544 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:31:46,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 17:31:46,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 17:31:46,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 17:31:46,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 17:31:46,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:31:46,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:31:46,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:31:46,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:31:46,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:31:46,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:31:46,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 17:31:46,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:31:46,644 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:31:46,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:31:46,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:31:46,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 17:31:46,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:31:46,654 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 17:31:46,655 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2101442070] [2020-10-14 17:31:46,660 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 17:31:46,661 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 17:31:46,662 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043410808] [2020-10-14 17:31:46,670 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 17:31:46,670 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:31:46,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 17:31:46,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 17:31:46,689 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 5 states. [2020-10-14 17:31:46,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:31:46,864 INFO L93 Difference]: Finished difference Result 52 states and 67 transitions. [2020-10-14 17:31:46,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 17:31:46,866 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-14 17:31:46,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:31:46,877 INFO L225 Difference]: With dead ends: 52 [2020-10-14 17:31:46,878 INFO L226 Difference]: Without dead ends: 28 [2020-10-14 17:31:46,882 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 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 17:31:46,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-14 17:31:46,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 21. [2020-10-14 17:31:46,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-10-14 17:31:46,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2020-10-14 17:31:46,930 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 13 [2020-10-14 17:31:46,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:31:46,931 INFO L479 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2020-10-14 17:31:46,931 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 17:31:46,931 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2020-10-14 17:31:46,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-14 17:31:46,932 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:31:46,932 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:31:46,933 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 17:31:46,933 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:31:46,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:31:46,934 INFO L82 PathProgramCache]: Analyzing trace with hash -1672402483, now seen corresponding path program 1 times [2020-10-14 17:31:46,934 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:31:46,934 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1917913696] [2020-10-14 17:31:46,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:31:46,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:31:46,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:31:47,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:31:47,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 17:31:47,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:31:47,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-14 17:31:47,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:31:47,088 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:31:47,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 17:31:47,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 17:31:47,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 17:31:47,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:31:47,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:31:47,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:31:47,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:31:47,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:31:47,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:31:47,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:31:47,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 17:31:47,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:31:47,171 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:31:47,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:31:47,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:31:47,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:31:47,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:31:47,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 17:31:47,181 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1917913696] [2020-10-14 17:31:47,181 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 17:31:47,181 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 17:31:47,182 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646145900] [2020-10-14 17:31:47,187 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 17:31:47,187 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:31:47,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 17:31:47,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 17:31:47,188 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand 5 states. [2020-10-14 17:31:47,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:31:47,309 INFO L93 Difference]: Finished difference Result 35 states and 38 transitions. [2020-10-14 17:31:47,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 17:31:47,310 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-10-14 17:31:47,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:31:47,312 INFO L225 Difference]: With dead ends: 35 [2020-10-14 17:31:47,312 INFO L226 Difference]: Without dead ends: 23 [2020-10-14 17:31:47,314 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 17:31:47,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-10-14 17:31:47,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2020-10-14 17:31:47,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-10-14 17:31:47,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2020-10-14 17:31:47,331 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 14 [2020-10-14 17:31:47,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:31:47,332 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2020-10-14 17:31:47,333 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 17:31:47,333 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2020-10-14 17:31:47,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-14 17:31:47,334 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:31:47,334 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:31:47,335 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 17:31:47,335 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:31:47,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:31:47,335 INFO L82 PathProgramCache]: Analyzing trace with hash -973616762, now seen corresponding path program 1 times [2020-10-14 17:31:47,336 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:31:47,336 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1676568079] [2020-10-14 17:31:47,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:31:47,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:31:47,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:31:47,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:31:47,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:31:47,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-14 17:31:47,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:31:47,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 264 [2020-10-14 17:31:47,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:31:47,645 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:31:47,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 17:31:47,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 17:31:47,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 17:31:47,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:31:47,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:31:47,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:31:47,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:31:47,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:31:47,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:31:47,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:31:47,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 17:31:47,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:31:47,735 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:31:47,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:31:47,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:31:47,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 17:31:47,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:31:47,747 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 17:31:47,747 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1676568079] [2020-10-14 17:31:47,748 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:31:47,749 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 17:31:47,749 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615672232] [2020-10-14 17:31:47,750 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 17:31:47,751 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:31:47,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 17:31:47,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-14 17:31:47,752 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand 6 states. [2020-10-14 17:31:47,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:31:47,942 INFO L93 Difference]: Finished difference Result 42 states and 47 transitions. [2020-10-14 17:31:47,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 17:31:47,943 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-10-14 17:31:47,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:31:47,945 INFO L225 Difference]: With dead ends: 42 [2020-10-14 17:31:47,946 INFO L226 Difference]: Without dead ends: 31 [2020-10-14 17:31:47,947 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-14 17:31:47,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-10-14 17:31:47,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 24. [2020-10-14 17:31:47,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-10-14 17:31:47,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2020-10-14 17:31:47,963 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 16 [2020-10-14 17:31:47,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:31:47,963 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2020-10-14 17:31:47,963 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 17:31:47,964 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2020-10-14 17:31:47,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-14 17:31:47,965 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:31:47,965 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:31:47,966 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 17:31:47,966 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:31:47,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:31:47,967 INFO L82 PathProgramCache]: Analyzing trace with hash 311532710, now seen corresponding path program 1 times [2020-10-14 17:31:47,967 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:31:47,968 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1995643698] [2020-10-14 17:31:47,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:31:47,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:31:47,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:31:48,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:31:48,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 17:31:48,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:31:48,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-14 17:31:48,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:31:48,062 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:31:48,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 17:31:48,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 17:31:48,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 17:31:48,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:31:48,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:31:48,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:31:48,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:31:48,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:31:48,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:31:48,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:31:48,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 17:31:48,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:31:48,113 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:31:48,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:31:48,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:31:48,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:31:48,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:31:48,119 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 17:31:48,121 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1995643698] [2020-10-14 17:31:48,121 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:31:48,122 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 17:31:48,123 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740762371] [2020-10-14 17:31:48,124 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 17:31:48,124 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:31:48,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 17:31:48,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-14 17:31:48,132 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand 6 states. [2020-10-14 17:31:48,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:31:48,229 INFO L93 Difference]: Finished difference Result 38 states and 41 transitions. [2020-10-14 17:31:48,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 17:31:48,230 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-10-14 17:31:48,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:31:48,231 INFO L225 Difference]: With dead ends: 38 [2020-10-14 17:31:48,231 INFO L226 Difference]: Without dead ends: 26 [2020-10-14 17:31:48,232 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 17:31:48,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-10-14 17:31:48,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2020-10-14 17:31:48,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-10-14 17:31:48,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2020-10-14 17:31:48,244 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 17 [2020-10-14 17:31:48,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:31:48,245 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2020-10-14 17:31:48,245 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 17:31:48,245 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2020-10-14 17:31:48,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-14 17:31:48,246 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:31:48,246 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:31:48,249 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 17:31:48,249 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:31:48,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:31:48,249 INFO L82 PathProgramCache]: Analyzing trace with hash -1377375713, now seen corresponding path program 2 times [2020-10-14 17:31:48,250 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:31:48,250 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2056784710] [2020-10-14 17:31:48,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:31:48,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:31:48,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:31:48,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:31:48,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:31:48,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-14 17:31:48,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:31:48,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 294 [2020-10-14 17:31:48,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:31:48,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:31:48,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 17:31:48,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 17:31:48,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 17:31:48,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:31:48,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:31:48,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:31:48,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:31:48,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:31:48,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:31:48,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:31:48,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 17:31:48,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:31:48,657 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:31:48,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:31:48,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:31:48,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 17:31:48,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:31:48,666 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 17:31:48,667 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2056784710] [2020-10-14 17:31:48,667 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:31:48,667 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 17:31:48,668 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509550204] [2020-10-14 17:31:48,669 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 17:31:48,669 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:31:48,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 17:31:48,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 17:31:48,670 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand 7 states. [2020-10-14 17:31:48,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:31:48,838 INFO L93 Difference]: Finished difference Result 45 states and 50 transitions. [2020-10-14 17:31:48,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 17:31:48,839 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-14 17:31:48,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:31:48,840 INFO L225 Difference]: With dead ends: 45 [2020-10-14 17:31:48,840 INFO L226 Difference]: Without dead ends: 34 [2020-10-14 17:31:48,841 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-14 17:31:48,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-14 17:31:48,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 27. [2020-10-14 17:31:48,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-14 17:31:48,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2020-10-14 17:31:48,855 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 19 [2020-10-14 17:31:48,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:31:48,856 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2020-10-14 17:31:48,856 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 17:31:48,856 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2020-10-14 17:31:48,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-14 17:31:48,858 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:31:48,859 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:31:48,859 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 17:31:48,859 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:31:48,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:31:48,860 INFO L82 PathProgramCache]: Analyzing trace with hash 679907117, now seen corresponding path program 2 times [2020-10-14 17:31:48,860 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:31:48,860 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [953003214] [2020-10-14 17:31:48,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:31:48,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:31:48,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:31:48,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:31:48,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 17:31:48,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:31:48,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-14 17:31:48,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:31:48,942 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:31:48,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 17:31:48,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 17:31:48,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 17:31:48,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:31:48,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:31:48,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:31:48,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:31:48,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:31:48,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:31:48,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:31:49,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:31:49,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:31:49,002 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:31:49,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:31:49,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:31:49,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:31:49,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 17:31:49,006 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 17:31:49,006 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [953003214] [2020-10-14 17:31:49,007 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:31:49,008 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 17:31:49,008 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534615571] [2020-10-14 17:31:49,008 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 17:31:49,009 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:31:49,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 17:31:49,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 17:31:49,009 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand 7 states. [2020-10-14 17:31:49,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:31:49,116 INFO L93 Difference]: Finished difference Result 41 states and 44 transitions. [2020-10-14 17:31:49,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 17:31:49,117 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2020-10-14 17:31:49,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:31:49,119 INFO L225 Difference]: With dead ends: 41 [2020-10-14 17:31:49,119 INFO L226 Difference]: Without dead ends: 29 [2020-10-14 17:31:49,120 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-10-14 17:31:49,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-14 17:31:49,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2020-10-14 17:31:49,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-14 17:31:49,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2020-10-14 17:31:49,128 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 20 [2020-10-14 17:31:49,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:31:49,128 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2020-10-14 17:31:49,129 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 17:31:49,129 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2020-10-14 17:31:49,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-14 17:31:49,130 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:31:49,130 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:31:49,130 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 17:31:49,131 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:31:49,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:31:49,131 INFO L82 PathProgramCache]: Analyzing trace with hash 443111142, now seen corresponding path program 3 times [2020-10-14 17:31:49,131 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:31:49,132 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1090094949] [2020-10-14 17:31:49,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:31:49,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:31:49,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:31:49,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:31:49,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:31:49,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-14 17:31:49,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:31:49,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 273 [2020-10-14 17:31:49,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:31:49,419 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:31:49,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 17:31:49,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 17:31:49,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 17:31:49,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:31:49,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:31:49,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:31:49,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:31:49,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:31:49,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:31:49,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:31:49,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 17:31:49,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:31:49,497 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:31:49,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:31:49,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:31:49,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 17:31:49,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:31:49,504 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 17:31:49,505 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1090094949] [2020-10-14 17:31:49,505 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:31:49,505 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 17:31:49,506 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159730545] [2020-10-14 17:31:49,507 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 17:31:49,507 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:31:49,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 17:31:49,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-14 17:31:49,508 INFO L87 Difference]: Start difference. First operand 28 states and 30 transitions. Second operand 8 states. [2020-10-14 17:31:49,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:31:49,697 INFO L93 Difference]: Finished difference Result 48 states and 53 transitions. [2020-10-14 17:31:49,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 17:31:49,698 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 22 [2020-10-14 17:31:49,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:31:49,699 INFO L225 Difference]: With dead ends: 48 [2020-10-14 17:31:49,699 INFO L226 Difference]: Without dead ends: 37 [2020-10-14 17:31:49,700 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-14 17:31:49,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-10-14 17:31:49,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 30. [2020-10-14 17:31:49,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-14 17:31:49,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2020-10-14 17:31:49,714 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 22 [2020-10-14 17:31:49,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:31:49,714 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2020-10-14 17:31:49,715 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 17:31:49,715 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2020-10-14 17:31:49,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-14 17:31:49,716 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:31:49,717 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:31:49,717 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 17:31:49,717 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:31:49,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:31:49,718 INFO L82 PathProgramCache]: Analyzing trace with hash 1280424774, now seen corresponding path program 3 times [2020-10-14 17:31:49,720 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:31:49,720 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1898394034] [2020-10-14 17:31:49,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:31:49,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:31:49,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:31:49,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:31:49,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-14 17:31:49,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:31:49,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-14 17:31:49,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:31:49,816 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:31:49,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 17:31:49,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 17:31:49,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 17:31:49,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:31:49,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:31:49,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:31:49,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:31:49,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:31:49,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:31:49,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:31:49,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:31:49,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:31:49,883 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:31:49,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:31:49,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:31:49,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:31:49,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 17:31:49,888 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 17:31:49,888 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1898394034] [2020-10-14 17:31:49,889 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:31:49,889 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 17:31:49,889 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73348897] [2020-10-14 17:31:49,890 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 17:31:49,890 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:31:49,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 17:31:49,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-14 17:31:49,891 INFO L87 Difference]: Start difference. First operand 30 states and 32 transitions. Second operand 8 states. [2020-10-14 17:31:49,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:31:49,994 INFO L93 Difference]: Finished difference Result 44 states and 47 transitions. [2020-10-14 17:31:49,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 17:31:49,995 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 23 [2020-10-14 17:31:49,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:31:49,996 INFO L225 Difference]: With dead ends: 44 [2020-10-14 17:31:49,996 INFO L226 Difference]: Without dead ends: 32 [2020-10-14 17:31:49,997 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-14 17:31:49,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-14 17:31:50,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2020-10-14 17:31:50,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-14 17:31:50,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2020-10-14 17:31:50,002 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 23 [2020-10-14 17:31:50,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:31:50,002 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2020-10-14 17:31:50,003 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 17:31:50,003 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2020-10-14 17:31:50,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-14 17:31:50,003 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:31:50,004 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:31:50,004 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 17:31:50,004 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:31:50,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:31:50,004 INFO L82 PathProgramCache]: Analyzing trace with hash 2014961855, now seen corresponding path program 4 times [2020-10-14 17:31:50,005 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:31:50,005 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1045695652] [2020-10-14 17:31:50,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:31:50,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:31:50,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:31:50,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:31:50,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:31:50,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-14 17:31:50,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:31:50,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 267 [2020-10-14 17:31:50,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:31:50,284 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:31:50,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 17:31:50,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 17:31:50,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 17:31:50,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:31:50,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:31:50,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:31:50,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:31:50,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:31:50,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:31:50,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:31:50,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 17:31:50,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:31:50,353 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:31:50,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:31:50,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:31:50,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:31:50,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:31:50,356 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 17:31:50,357 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1045695652] [2020-10-14 17:31:50,357 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:31:50,357 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 17:31:50,358 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316686839] [2020-10-14 17:31:50,358 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 17:31:50,358 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:31:50,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 17:31:50,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-14 17:31:50,359 INFO L87 Difference]: Start difference. First operand 31 states and 33 transitions. Second operand 9 states. [2020-10-14 17:31:50,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:31:50,478 INFO L93 Difference]: Finished difference Result 47 states and 51 transitions. [2020-10-14 17:31:50,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 17:31:50,479 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-14 17:31:50,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:31:50,481 INFO L225 Difference]: With dead ends: 47 [2020-10-14 17:31:50,482 INFO L226 Difference]: Without dead ends: 35 [2020-10-14 17:31:50,482 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-14 17:31:50,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-10-14 17:31:50,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 34. [2020-10-14 17:31:50,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-14 17:31:50,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 36 transitions. [2020-10-14 17:31:50,487 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 36 transitions. Word has length 25 [2020-10-14 17:31:50,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:31:50,488 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 36 transitions. [2020-10-14 17:31:50,488 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 17:31:50,488 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 36 transitions. [2020-10-14 17:31:50,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-14 17:31:50,489 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:31:50,489 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:31:50,489 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 17:31:50,490 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:31:50,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:31:50,490 INFO L82 PathProgramCache]: Analyzing trace with hash 991124550, now seen corresponding path program 5 times [2020-10-14 17:31:50,490 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:31:50,491 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [207788337] [2020-10-14 17:31:50,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:31:50,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:31:50,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:31:50,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:31:51,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:31:51,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-14 17:31:51,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:31:51,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 552 [2020-10-14 17:31:51,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:31:51,056 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:31:51,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 17:31:51,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 17:31:51,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 17:31:51,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 17:31:51,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:31:51,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:31:51,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:31:51,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:31:51,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:31:51,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:31:51,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 17:31:51,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:31:51,154 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:31:51,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:31:51,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:31:51,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 17:31:51,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:31:51,159 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 17:31:51,160 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [207788337] [2020-10-14 17:31:51,160 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:31:51,160 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 17:31:51,161 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744112396] [2020-10-14 17:31:51,161 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 17:31:51,162 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:31:51,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 17:31:51,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-10-14 17:31:51,162 INFO L87 Difference]: Start difference. First operand 34 states and 36 transitions. Second operand 10 states. [2020-10-14 17:31:51,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:31:51,370 INFO L93 Difference]: Finished difference Result 54 states and 59 transitions. [2020-10-14 17:31:51,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 17:31:51,371 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 28 [2020-10-14 17:31:51,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:31:51,372 INFO L225 Difference]: With dead ends: 54 [2020-10-14 17:31:51,372 INFO L226 Difference]: Without dead ends: 43 [2020-10-14 17:31:51,373 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=158, Unknown=0, NotChecked=0, Total=240 [2020-10-14 17:31:51,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-10-14 17:31:51,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 36. [2020-10-14 17:31:51,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-14 17:31:51,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions. [2020-10-14 17:31:51,382 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 28 [2020-10-14 17:31:51,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:31:51,382 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 38 transitions. [2020-10-14 17:31:51,382 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 17:31:51,383 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 38 transitions. [2020-10-14 17:31:51,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-14 17:31:51,385 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:31:51,385 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:31:51,386 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 17:31:51,386 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:31:51,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:31:51,388 INFO L82 PathProgramCache]: Analyzing trace with hash 1088971238, now seen corresponding path program 4 times [2020-10-14 17:31:51,388 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:31:51,388 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [376672125] [2020-10-14 17:31:51,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:31:51,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:31:51,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:31:51,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:31:51,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-14 17:31:51,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:31:51,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 245 [2020-10-14 17:31:51,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:31:51,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:31:51,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 17:31:51,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 17:31:51,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 17:31:51,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:31:51,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:31:51,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:31:51,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:31:51,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:31:51,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:31:51,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:31:51,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:31:51,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:31:51,924 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:31:51,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:31:51,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:31:51,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:31:51,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:31:51,931 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 17:31:51,931 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [376672125] [2020-10-14 17:31:51,932 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:31:51,932 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 17:31:51,932 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602127437] [2020-10-14 17:31:51,933 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 17:31:51,933 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:31:51,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 17:31:51,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2020-10-14 17:31:51,934 INFO L87 Difference]: Start difference. First operand 36 states and 38 transitions. Second operand 17 states. [2020-10-14 17:31:52,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:31:52,310 INFO L93 Difference]: Finished difference Result 52 states and 56 transitions. [2020-10-14 17:31:52,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 17:31:52,311 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 29 [2020-10-14 17:31:52,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:31:52,312 INFO L225 Difference]: With dead ends: 52 [2020-10-14 17:31:52,313 INFO L226 Difference]: Without dead ends: 50 [2020-10-14 17:31:52,314 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=64, Invalid=442, Unknown=0, NotChecked=0, Total=506 [2020-10-14 17:31:52,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-14 17:31:52,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 44. [2020-10-14 17:31:52,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-14 17:31:52,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 47 transitions. [2020-10-14 17:31:52,330 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 47 transitions. Word has length 29 [2020-10-14 17:31:52,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:31:52,330 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 47 transitions. [2020-10-14 17:31:52,330 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 17:31:52,331 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 47 transitions. [2020-10-14 17:31:52,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-14 17:31:52,335 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:31:52,335 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:31:52,335 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 17:31:52,335 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:31:52,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:31:52,336 INFO L82 PathProgramCache]: Analyzing trace with hash -1583259809, now seen corresponding path program 6 times [2020-10-14 17:31:52,336 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:31:52,336 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [882849158] [2020-10-14 17:31:52,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:31:52,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:31:52,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:31:52,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:31:53,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:31:53,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-14 17:31:53,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:31:53,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 682 [2020-10-14 17:31:53,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:31:53,031 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:31:53,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 17:31:53,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 17:31:53,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 17:31:53,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:31:53,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:31:53,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:31:53,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:31:53,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:31:53,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:31:53,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:31:53,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 17:31:53,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:31:53,125 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:31:53,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:31:53,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:31:53,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 17:31:53,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:31:53,129 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 17:31:53,130 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [882849158] [2020-10-14 17:31:53,130 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:31:53,130 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 17:31:53,131 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095983718] [2020-10-14 17:31:53,131 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 17:31:53,132 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:31:53,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 17:31:53,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-10-14 17:31:53,132 INFO L87 Difference]: Start difference. First operand 44 states and 47 transitions. Second operand 11 states. [2020-10-14 17:31:53,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:31:53,384 INFO L93 Difference]: Finished difference Result 68 states and 75 transitions. [2020-10-14 17:31:53,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 17:31:53,385 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 31 [2020-10-14 17:31:53,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:31:53,389 INFO L225 Difference]: With dead ends: 68 [2020-10-14 17:31:53,389 INFO L226 Difference]: Without dead ends: 57 [2020-10-14 17:31:53,390 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 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 17:31:53,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-10-14 17:31:53,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 46. [2020-10-14 17:31:53,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-14 17:31:53,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 49 transitions. [2020-10-14 17:31:53,399 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 49 transitions. Word has length 31 [2020-10-14 17:31:53,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:31:53,399 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 49 transitions. [2020-10-14 17:31:53,399 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 17:31:53,399 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 49 transitions. [2020-10-14 17:31:53,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-14 17:31:53,400 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:31:53,401 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:31:53,401 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 17:31:53,401 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:31:53,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:31:53,402 INFO L82 PathProgramCache]: Analyzing trace with hash -1407532563, now seen corresponding path program 5 times [2020-10-14 17:31:53,402 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:31:53,403 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1151140242] [2020-10-14 17:31:53,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:31:53,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:31:53,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:31:53,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:31:53,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-14 17:31:53,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:31:53,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 335 [2020-10-14 17:31:53,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:31:53,756 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:31:53,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 17:31:53,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 17:31:53,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 17:31:53,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:31:54,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:31:54,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:31:54,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:31:54,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:31:54,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:31:54,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:31:54,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:31:54,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:31:54,096 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:31:54,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:31:54,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:31:54,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:31:54,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:31:54,103 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 17:31:54,103 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1151140242] [2020-10-14 17:31:54,104 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:31:54,104 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 17:31:54,104 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164225128] [2020-10-14 17:31:54,105 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 17:31:54,105 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:31:54,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 17:31:54,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2020-10-14 17:31:54,106 INFO L87 Difference]: Start difference. First operand 46 states and 49 transitions. Second operand 17 states. [2020-10-14 17:31:54,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:31:54,514 INFO L93 Difference]: Finished difference Result 68 states and 74 transitions. [2020-10-14 17:31:54,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-14 17:31:54,514 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 32 [2020-10-14 17:31:54,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:31:54,515 INFO L225 Difference]: With dead ends: 68 [2020-10-14 17:31:54,516 INFO L226 Difference]: Without dead ends: 66 [2020-10-14 17:31:54,516 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=80, Invalid=520, Unknown=0, NotChecked=0, Total=600 [2020-10-14 17:31:54,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-14 17:31:54,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 47. [2020-10-14 17:31:54,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-14 17:31:54,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2020-10-14 17:31:54,524 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 32 [2020-10-14 17:31:54,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:31:54,524 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2020-10-14 17:31:54,524 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 17:31:54,524 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2020-10-14 17:31:54,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-14 17:31:54,525 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:31:54,525 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:31:54,526 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 17:31:54,526 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:31:54,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:31:54,526 INFO L82 PathProgramCache]: Analyzing trace with hash 163305894, now seen corresponding path program 7 times [2020-10-14 17:31:54,527 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:31:54,527 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1872593544] [2020-10-14 17:31:54,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:31:54,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:31:54,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:31:54,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:31:54,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:31:55,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:31:56,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:31:56,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-14 17:31:56,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 17:31:56,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1654 [2020-10-14 17:31:56,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:31:56,196 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:31:56,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 17:31:56,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 17:31:56,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 17:31:56,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:31:56,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:31:56,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:31:56,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:31:56,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:31:56,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:31:56,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:31:56,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 17:31:56,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:31:56,297 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:31:56,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:31:56,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:31:56,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 17:31:56,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:31:56,304 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 17:31:56,304 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1872593544] [2020-10-14 17:31:56,304 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:31:56,305 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 17:31:56,305 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523131380] [2020-10-14 17:31:56,305 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 17:31:56,306 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:31:56,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 17:31:56,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2020-10-14 17:31:56,306 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand 12 states. [2020-10-14 17:31:56,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:31:56,538 INFO L93 Difference]: Finished difference Result 78 states and 88 transitions. [2020-10-14 17:31:56,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 17:31:56,539 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 34 [2020-10-14 17:31:56,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:31:56,541 INFO L225 Difference]: With dead ends: 78 [2020-10-14 17:31:56,541 INFO L226 Difference]: Without dead ends: 67 [2020-10-14 17:31:56,542 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 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 17:31:56,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-10-14 17:31:56,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 49. [2020-10-14 17:31:56,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-14 17:31:56,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2020-10-14 17:31:56,550 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 34 [2020-10-14 17:31:56,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:31:56,551 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 53 transitions. [2020-10-14 17:31:56,551 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 17:31:56,551 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2020-10-14 17:31:56,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-14 17:31:56,552 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:31:56,552 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:31:56,552 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 17:31:56,552 INFO L427 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:31:56,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:31:56,553 INFO L82 PathProgramCache]: Analyzing trace with hash 1196396678, now seen corresponding path program 6 times [2020-10-14 17:31:56,553 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:31:56,553 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1714753297] [2020-10-14 17:31:56,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:31:56,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:31:56,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:31:56,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:31:57,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:31:57,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-14 17:31:57,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:31:57,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 509 [2020-10-14 17:31:57,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:31:57,077 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:31:57,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-14 17:31:57,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 17:31:57,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-14 17:31:57,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:31:57,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:31:57,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:31:57,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:31:57,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:31:57,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:31:57,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:31:57,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:31:57,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:31:57,531 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:31:57,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:31:57,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:31:57,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:31:57,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:31:57,539 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 17:31:57,539 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1714753297] [2020-10-14 17:31:57,540 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:31:57,540 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-14 17:31:57,540 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413232304] [2020-10-14 17:31:57,541 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-14 17:31:57,541 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:31:57,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-14 17:31:57,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2020-10-14 17:31:57,542 INFO L87 Difference]: Start difference. First operand 49 states and 53 transitions. Second operand 19 states. [2020-10-14 17:31:58,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:31:58,108 INFO L93 Difference]: Finished difference Result 80 states and 89 transitions. [2020-10-14 17:31:58,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-14 17:31:58,109 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 35 [2020-10-14 17:31:58,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:31:58,111 INFO L225 Difference]: With dead ends: 80 [2020-10-14 17:31:58,111 INFO L226 Difference]: Without dead ends: 78 [2020-10-14 17:31:58,113 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=115, Invalid=697, Unknown=0, NotChecked=0, Total=812 [2020-10-14 17:31:58,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-10-14 17:31:58,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 50. [2020-10-14 17:31:58,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-14 17:31:58,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 55 transitions. [2020-10-14 17:31:58,128 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 55 transitions. Word has length 35 [2020-10-14 17:31:58,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:31:58,128 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 55 transitions. [2020-10-14 17:31:58,128 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-14 17:31:58,129 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 55 transitions. [2020-10-14 17:31:58,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-14 17:31:58,131 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:31:58,131 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:31:58,132 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 17:31:58,132 INFO L427 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:31:58,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:31:58,133 INFO L82 PathProgramCache]: Analyzing trace with hash 1785920669, now seen corresponding path program 1 times [2020-10-14 17:31:58,133 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:31:58,133 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [970628772] [2020-10-14 17:31:58,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:31:58,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:31:58,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:31:58,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:31:58,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-14 17:31:58,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:31:58,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-10-14 17:31:58,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:31:58,311 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:31:58,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 17:31:58,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 17:31:58,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 17:31:58,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:31:58,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:31:58,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:31:58,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:31:58,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:31:58,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:31:58,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:31:58,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:31:58,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:31:58,395 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:31:58,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:31:58,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:31:58,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:31:58,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:31:58,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-14 17:31:58,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:31:58,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:31:58,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:31:58,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:31:58,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:31:58,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 17:31:58,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:31:58,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:31:58,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:31:58,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:31:58,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:31:58,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:31:58,413 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 4 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 17:31:58,413 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [970628772] [2020-10-14 17:31:58,416 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:31:58,416 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 17:31:58,416 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068837912] [2020-10-14 17:31:58,417 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 17:31:58,417 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:31:58,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 17:31:58,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-14 17:31:58,418 INFO L87 Difference]: Start difference. First operand 50 states and 55 transitions. Second operand 11 states. [2020-10-14 17:31:58,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:31:58,605 INFO L93 Difference]: Finished difference Result 66 states and 72 transitions. [2020-10-14 17:31:58,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 17:31:58,605 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 37 [2020-10-14 17:31:58,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:31:58,607 INFO L225 Difference]: With dead ends: 66 [2020-10-14 17:31:58,607 INFO L226 Difference]: Without dead ends: 50 [2020-10-14 17:31:58,608 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2020-10-14 17:31:58,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-14 17:31:58,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-10-14 17:31:58,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-14 17:31:58,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2020-10-14 17:31:58,618 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 37 [2020-10-14 17:31:58,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:31:58,618 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2020-10-14 17:31:58,618 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 17:31:58,618 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2020-10-14 17:31:58,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-14 17:31:58,619 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:31:58,619 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:31:58,619 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 17:31:58,619 INFO L427 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:31:58,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:31:58,620 INFO L82 PathProgramCache]: Analyzing trace with hash -1426627073, now seen corresponding path program 8 times [2020-10-14 17:31:58,620 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:31:58,620 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1679823001] [2020-10-14 17:31:58,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:31:58,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:31:58,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:31:58,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:31:59,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:31:59,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:31:59,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:01,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:02,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:02,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:02,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:02,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-14 17:32:02,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 17:32:02,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4089 [2020-10-14 17:32:02,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:02,730 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:02,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 17:32:02,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 17:32:02,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-14 17:32:02,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:02,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:32:02,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:02,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:02,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:02,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:32:02,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:02,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 17:32:02,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:02,847 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:02,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:32:02,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:02,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 17:32:02,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:32:02,853 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 17:32:02,853 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1679823001] [2020-10-14 17:32:02,854 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:32:02,854 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 17:32:02,854 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987963214] [2020-10-14 17:32:02,855 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 17:32:02,855 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:32:02,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 17:32:02,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=96, Unknown=0, NotChecked=0, Total=156 [2020-10-14 17:32:02,856 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand 13 states. [2020-10-14 17:32:03,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:32:03,133 INFO L93 Difference]: Finished difference Result 81 states and 91 transitions. [2020-10-14 17:32:03,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 17:32:03,134 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 37 [2020-10-14 17:32:03,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:32:03,135 INFO L225 Difference]: With dead ends: 81 [2020-10-14 17:32:03,135 INFO L226 Difference]: Without dead ends: 70 [2020-10-14 17:32:03,136 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=160, Invalid=302, Unknown=0, NotChecked=0, Total=462 [2020-10-14 17:32:03,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-14 17:32:03,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 52. [2020-10-14 17:32:03,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-14 17:32:03,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 56 transitions. [2020-10-14 17:32:03,144 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 56 transitions. Word has length 37 [2020-10-14 17:32:03,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:32:03,145 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 56 transitions. [2020-10-14 17:32:03,146 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 17:32:03,146 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 56 transitions. [2020-10-14 17:32:03,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-14 17:32:03,146 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:32:03,146 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:32:03,147 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 17:32:03,147 INFO L427 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:32:03,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:32:03,147 INFO L82 PathProgramCache]: Analyzing trace with hash -846885043, now seen corresponding path program 7 times [2020-10-14 17:32:03,147 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:32:03,148 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1979024476] [2020-10-14 17:32:03,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:32:03,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:03,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:03,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:03,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:04,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:04,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-14 17:32:04,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 17:32:04,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1097 [2020-10-14 17:32:04,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:04,261 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:04,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-14 17:32:04,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 17:32:04,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-14 17:32:04,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:04,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:32:04,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:04,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:04,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:04,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:32:04,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:04,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:32:04,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:04,779 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:04,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:32:04,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:04,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:32:04,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:04,788 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 17:32:04,788 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1979024476] [2020-10-14 17:32:04,789 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:32:04,789 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-14 17:32:04,793 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399614268] [2020-10-14 17:32:04,795 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-14 17:32:04,796 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:32:04,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-14 17:32:04,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=411, Unknown=0, NotChecked=0, Total=462 [2020-10-14 17:32:04,797 INFO L87 Difference]: Start difference. First operand 52 states and 56 transitions. Second operand 22 states. [2020-10-14 17:32:05,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:32:05,651 INFO L93 Difference]: Finished difference Result 71 states and 77 transitions. [2020-10-14 17:32:05,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-14 17:32:05,651 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 38 [2020-10-14 17:32:05,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:32:05,652 INFO L225 Difference]: With dead ends: 71 [2020-10-14 17:32:05,652 INFO L226 Difference]: Without dead ends: 69 [2020-10-14 17:32:05,653 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=123, Invalid=807, Unknown=0, NotChecked=0, Total=930 [2020-10-14 17:32:05,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-10-14 17:32:05,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 51. [2020-10-14 17:32:05,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-14 17:32:05,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 55 transitions. [2020-10-14 17:32:05,667 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 55 transitions. Word has length 38 [2020-10-14 17:32:05,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:32:05,667 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 55 transitions. [2020-10-14 17:32:05,667 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-14 17:32:05,668 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 55 transitions. [2020-10-14 17:32:05,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-14 17:32:05,668 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:32:05,668 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:32:05,669 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 17:32:05,669 INFO L427 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:32:05,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:32:05,669 INFO L82 PathProgramCache]: Analyzing trace with hash 992241060, now seen corresponding path program 2 times [2020-10-14 17:32:05,669 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:32:05,670 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [678622823] [2020-10-14 17:32:05,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:32:05,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:05,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:05,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:07,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:07,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-14 17:32:07,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:32:07,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1891 [2020-10-14 17:32:07,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:07,577 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:07,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-14 17:32:07,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 17:32:07,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-14 17:32:07,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:07,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:32:07,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:07,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:07,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:07,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:32:07,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:07,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:32:07,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:07,838 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:07,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:32:07,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:07,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:32:07,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:32:07,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-14 17:32:07,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:07,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:07,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:07,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:07,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:07,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 17:32:07,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:07,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:07,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 17:32:07,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:07,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 17:32:07,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:32:07,878 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 1 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 17:32:07,878 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [678622823] [2020-10-14 17:32:07,878 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:32:07,878 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-14 17:32:07,879 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474920918] [2020-10-14 17:32:07,880 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-14 17:32:07,880 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:32:07,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-14 17:32:07,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2020-10-14 17:32:07,881 INFO L87 Difference]: Start difference. First operand 51 states and 55 transitions. Second operand 19 states. [2020-10-14 17:32:08,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:32:08,591 INFO L93 Difference]: Finished difference Result 68 states and 75 transitions. [2020-10-14 17:32:08,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-14 17:32:08,592 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 40 [2020-10-14 17:32:08,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:32:08,593 INFO L225 Difference]: With dead ends: 68 [2020-10-14 17:32:08,593 INFO L226 Difference]: Without dead ends: 66 [2020-10-14 17:32:08,594 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=98, Invalid=772, Unknown=0, NotChecked=0, Total=870 [2020-10-14 17:32:08,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-14 17:32:08,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 60. [2020-10-14 17:32:08,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-10-14 17:32:08,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 66 transitions. [2020-10-14 17:32:08,605 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 66 transitions. Word has length 40 [2020-10-14 17:32:08,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:32:08,605 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 66 transitions. [2020-10-14 17:32:08,605 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-14 17:32:08,606 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 66 transitions. [2020-10-14 17:32:08,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-14 17:32:08,608 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:32:08,608 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 7, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:32:08,608 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 17:32:08,608 INFO L427 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:32:08,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:32:08,609 INFO L82 PathProgramCache]: Analyzing trace with hash 277973821, now seen corresponding path program 3 times [2020-10-14 17:32:08,609 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:32:08,609 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1268476867] [2020-10-14 17:32:08,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:32:08,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:08,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:08,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:08,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:11,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:11,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-14 17:32:11,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 17:32:11,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2707 [2020-10-14 17:32:11,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:11,333 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:11,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-14 17:32:11,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 17:32:11,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-14 17:32:11,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:11,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:32:11,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:11,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:11,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:11,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:32:11,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:11,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:32:11,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:11,735 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:11,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:32:11,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:11,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:32:11,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:11,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-14 17:32:11,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:11,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:11,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:11,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:11,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:11,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:32:11,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:11,743 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:11,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:32:11,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:11,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:32:11,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:32:11,754 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 2 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 17:32:11,754 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1268476867] [2020-10-14 17:32:11,754 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:32:11,755 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-14 17:32:11,755 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96991649] [2020-10-14 17:32:11,755 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-14 17:32:11,755 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:32:11,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-14 17:32:11,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=338, Unknown=0, NotChecked=0, Total=380 [2020-10-14 17:32:11,756 INFO L87 Difference]: Start difference. First operand 60 states and 66 transitions. Second operand 20 states. [2020-10-14 17:32:12,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:32:12,375 INFO L93 Difference]: Finished difference Result 85 states and 94 transitions. [2020-10-14 17:32:12,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-14 17:32:12,375 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 43 [2020-10-14 17:32:12,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:32:12,376 INFO L225 Difference]: With dead ends: 85 [2020-10-14 17:32:12,377 INFO L226 Difference]: Without dead ends: 83 [2020-10-14 17:32:12,377 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=97, Invalid=773, Unknown=0, NotChecked=0, Total=870 [2020-10-14 17:32:12,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-10-14 17:32:12,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 62. [2020-10-14 17:32:12,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-10-14 17:32:12,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 67 transitions. [2020-10-14 17:32:12,390 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 67 transitions. Word has length 43 [2020-10-14 17:32:12,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:32:12,391 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 67 transitions. [2020-10-14 17:32:12,391 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-14 17:32:12,391 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 67 transitions. [2020-10-14 17:32:12,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-14 17:32:12,392 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:32:12,392 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 8, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:32:12,392 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-14 17:32:12,392 INFO L427 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:32:12,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:32:12,393 INFO L82 PathProgramCache]: Analyzing trace with hash -1189358844, now seen corresponding path program 4 times [2020-10-14 17:32:12,393 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:32:12,393 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1415683274] [2020-10-14 17:32:12,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:32:12,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:12,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:12,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:12,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:12,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:13,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:17,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:17,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-14 17:32:17,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 17:32:17,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-14 17:32:17,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:17,418 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:17,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-14 17:32:17,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 17:32:17,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-14 17:32:17,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:17,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:32:17,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:17,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:17,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:17,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:32:17,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:17,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:32:17,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:17,843 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:17,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:32:17,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:17,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:32:17,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:17,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-14 17:32:17,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:17,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:17,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:17,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:17,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:17,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:32:17,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:17,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:17,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:32:17,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:17,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:32:17,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:32:17,861 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 2 proven. 102 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 17:32:17,861 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1415683274] [2020-10-14 17:32:17,861 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:32:17,861 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-14 17:32:17,862 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979022431] [2020-10-14 17:32:17,863 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-14 17:32:17,863 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:32:17,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-14 17:32:17,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=455, Unknown=0, NotChecked=0, Total=506 [2020-10-14 17:32:17,864 INFO L87 Difference]: Start difference. First operand 62 states and 67 transitions. Second operand 23 states. [2020-10-14 17:32:18,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:32:18,692 INFO L93 Difference]: Finished difference Result 101 states and 113 transitions. [2020-10-14 17:32:18,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-14 17:32:18,693 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 46 [2020-10-14 17:32:18,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:32:18,694 INFO L225 Difference]: With dead ends: 101 [2020-10-14 17:32:18,694 INFO L226 Difference]: Without dead ends: 99 [2020-10-14 17:32:18,695 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=129, Invalid=1131, Unknown=0, NotChecked=0, Total=1260 [2020-10-14 17:32:18,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-10-14 17:32:18,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 63. [2020-10-14 17:32:18,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-14 17:32:18,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 69 transitions. [2020-10-14 17:32:18,715 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 69 transitions. Word has length 46 [2020-10-14 17:32:18,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:32:18,716 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 69 transitions. [2020-10-14 17:32:18,716 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-14 17:32:18,716 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 69 transitions. [2020-10-14 17:32:18,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-14 17:32:18,716 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:32:18,717 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:32:18,717 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-14 17:32:18,718 INFO L427 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:32:18,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:32:18,719 INFO L82 PathProgramCache]: Analyzing trace with hash 1086743131, now seen corresponding path program 5 times [2020-10-14 17:32:18,719 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:32:18,720 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1882491906] [2020-10-14 17:32:18,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:32:18,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:18,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:18,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:18,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-14 17:32:18,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:18,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-14 17:32:18,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:18,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:18,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 17:32:18,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 17:32:18,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-14 17:32:18,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:18,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:32:18,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:18,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:18,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:18,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:32:18,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:18,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:32:18,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:18,968 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:18,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:32:18,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:18,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:32:18,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:18,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-14 17:32:18,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:18,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:18,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:18,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:18,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:18,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:32:18,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:18,974 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:18,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:32:18,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:18,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:32:18,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:18,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-14 17:32:18,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:18,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:18,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:18,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:18,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:18,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:32:18,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:18,981 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:18,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:32:18,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:18,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:32:18,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:18,986 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 12 proven. 57 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 17:32:18,986 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1882491906] [2020-10-14 17:32:18,986 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:32:18,987 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 17:32:18,987 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914544300] [2020-10-14 17:32:18,988 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 17:32:18,988 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:32:18,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 17:32:18,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2020-10-14 17:32:18,989 INFO L87 Difference]: Start difference. First operand 63 states and 69 transitions. Second operand 13 states. [2020-10-14 17:32:19,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:32:19,149 INFO L93 Difference]: Finished difference Result 83 states and 91 transitions. [2020-10-14 17:32:19,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 17:32:19,151 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 48 [2020-10-14 17:32:19,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:32:19,152 INFO L225 Difference]: With dead ends: 83 [2020-10-14 17:32:19,152 INFO L226 Difference]: Without dead ends: 63 [2020-10-14 17:32:19,153 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-14 17:32:19,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-10-14 17:32:19,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2020-10-14 17:32:19,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-14 17:32:19,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 68 transitions. [2020-10-14 17:32:19,161 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 68 transitions. Word has length 48 [2020-10-14 17:32:19,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:32:19,161 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 68 transitions. [2020-10-14 17:32:19,161 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 17:32:19,161 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 68 transitions. [2020-10-14 17:32:19,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-14 17:32:19,162 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:32:19,162 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:32:19,162 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-14 17:32:19,162 INFO L427 AbstractCegarLoop]: === Iteration 23 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:32:19,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:32:19,163 INFO L82 PathProgramCache]: Analyzing trace with hash -1861989955, now seen corresponding path program 1 times [2020-10-14 17:32:19,163 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:32:19,169 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1190585467] [2020-10-14 17:32:19,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:32:19,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:19,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:19,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:19,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:19,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:20,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:20,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:22,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:22,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:22,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:22,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:23,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:24,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:24,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-14 17:32:24,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 17:32:24,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 17:32:24,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:24,186 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:24,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-14 17:32:24,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 17:32:24,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-14 17:32:24,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:32:24,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:32:24,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:24,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:24,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:24,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:32:24,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:24,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:32:24,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:24,757 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:24,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:32:24,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:24,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:32:24,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:24,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-14 17:32:24,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:24,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:24,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:24,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:24,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:24,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:32:24,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:24,764 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:24,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:32:24,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:24,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:32:24,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:24,774 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 2 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 17:32:24,775 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1190585467] [2020-10-14 17:32:24,775 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:32:24,775 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-14 17:32:24,775 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681547615] [2020-10-14 17:32:24,775 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-14 17:32:24,776 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:32:24,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-14 17:32:24,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=497, Unknown=0, NotChecked=0, Total=552 [2020-10-14 17:32:24,777 INFO L87 Difference]: Start difference. First operand 63 states and 68 transitions. Second operand 24 states. [2020-10-14 17:32:25,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:32:25,786 INFO L93 Difference]: Finished difference Result 88 states and 96 transitions. [2020-10-14 17:32:25,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-14 17:32:25,789 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 48 [2020-10-14 17:32:25,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:32:25,790 INFO L225 Difference]: With dead ends: 88 [2020-10-14 17:32:25,790 INFO L226 Difference]: Without dead ends: 86 [2020-10-14 17:32:25,791 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=146, Invalid=1044, Unknown=0, NotChecked=0, Total=1190 [2020-10-14 17:32:25,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-14 17:32:25,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 59. [2020-10-14 17:32:25,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-14 17:32:25,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 62 transitions. [2020-10-14 17:32:25,800 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 62 transitions. Word has length 48 [2020-10-14 17:32:25,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:32:25,800 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 62 transitions. [2020-10-14 17:32:25,800 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-14 17:32:25,801 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 62 transitions. [2020-10-14 17:32:25,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-14 17:32:25,801 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:32:25,801 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 7, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:32:25,801 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-14 17:32:25,802 INFO L427 AbstractCegarLoop]: === Iteration 24 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:32:25,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:32:25,802 INFO L82 PathProgramCache]: Analyzing trace with hash -635117836, now seen corresponding path program 6 times [2020-10-14 17:32:25,802 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:32:25,802 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [655922730] [2020-10-14 17:32:25,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:32:25,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:25,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:25,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:26,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:30,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:30,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-14 17:32:30,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 17:32:30,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 17:32:30,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:30,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:30,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-14 17:32:30,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 17:32:30,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-14 17:32:30,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:31,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:32:31,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:31,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:31,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:31,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:32:31,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:31,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:32:31,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:31,154 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:31,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:32:31,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:31,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:32:31,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:31,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-14 17:32:31,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:31,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:31,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:31,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:31,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:31,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:32:31,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:31,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:31,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:32:31,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:31,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:32:31,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:31,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-14 17:32:31,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:31,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:31,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:31,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:31,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:31,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 17:32:31,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:31,168 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:31,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 17:32:31,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:31,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 17:32:31,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:31,257 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 6 proven. 86 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 17:32:31,257 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [655922730] [2020-10-14 17:32:31,257 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:32:31,257 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-14 17:32:31,257 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756469902] [2020-10-14 17:32:31,258 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-14 17:32:31,258 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:32:31,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-14 17:32:31,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=419, Unknown=0, NotChecked=0, Total=462 [2020-10-14 17:32:31,258 INFO L87 Difference]: Start difference. First operand 59 states and 62 transitions. Second operand 22 states. [2020-10-14 17:32:32,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:32:32,268 INFO L93 Difference]: Finished difference Result 82 states and 88 transitions. [2020-10-14 17:32:32,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-14 17:32:32,270 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 51 [2020-10-14 17:32:32,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:32:32,271 INFO L225 Difference]: With dead ends: 82 [2020-10-14 17:32:32,271 INFO L226 Difference]: Without dead ends: 80 [2020-10-14 17:32:32,272 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=111, Invalid=1011, Unknown=0, NotChecked=0, Total=1122 [2020-10-14 17:32:32,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-14 17:32:32,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 74. [2020-10-14 17:32:32,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-10-14 17:32:32,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 79 transitions. [2020-10-14 17:32:32,284 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 79 transitions. Word has length 51 [2020-10-14 17:32:32,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:32:32,284 INFO L479 AbstractCegarLoop]: Abstraction has 74 states and 79 transitions. [2020-10-14 17:32:32,284 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-14 17:32:32,285 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 79 transitions. [2020-10-14 17:32:32,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-14 17:32:32,285 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:32:32,285 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 8, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:32:32,285 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-14 17:32:32,286 INFO L427 AbstractCegarLoop]: === Iteration 25 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:32:32,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:32:32,286 INFO L82 PathProgramCache]: Analyzing trace with hash -1800769605, now seen corresponding path program 7 times [2020-10-14 17:32:32,286 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:32:32,286 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [684145958] [2020-10-14 17:32:32,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:32:32,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:32,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:32,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:32,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:32,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:32,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:33,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:37,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:37,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-14 17:32:37,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 17:32:37,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 17:32:37,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:37,300 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:37,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-14 17:32:37,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 17:32:37,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-14 17:32:37,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:37,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:32:37,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:37,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:37,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:37,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:32:37,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:37,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:32:37,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:37,893 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:37,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:32:37,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:37,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:32:37,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:37,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-14 17:32:37,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:37,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:37,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:37,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:37,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:37,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:32:37,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:37,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:37,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:32:37,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:37,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:32:37,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:37,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-14 17:32:37,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:37,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:37,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:37,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:37,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:37,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 17:32:37,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:37,909 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:37,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 17:32:37,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:37,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 17:32:37,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:32:37,987 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 6 proven. 109 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 17:32:37,988 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [684145958] [2020-10-14 17:32:37,988 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:32:37,988 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-14 17:32:37,988 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551172653] [2020-10-14 17:32:37,989 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-14 17:32:37,989 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:32:37,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-14 17:32:37,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=487, Unknown=0, NotChecked=0, Total=552 [2020-10-14 17:32:37,989 INFO L87 Difference]: Start difference. First operand 74 states and 79 transitions. Second operand 24 states. [2020-10-14 17:32:39,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:32:39,434 INFO L93 Difference]: Finished difference Result 105 states and 115 transitions. [2020-10-14 17:32:39,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-14 17:32:39,435 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 54 [2020-10-14 17:32:39,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:32:39,437 INFO L225 Difference]: With dead ends: 105 [2020-10-14 17:32:39,437 INFO L226 Difference]: Without dead ends: 103 [2020-10-14 17:32:39,439 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 220 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=201, Invalid=1605, Unknown=0, NotChecked=0, Total=1806 [2020-10-14 17:32:39,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-10-14 17:32:39,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 75. [2020-10-14 17:32:39,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-14 17:32:39,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 81 transitions. [2020-10-14 17:32:39,451 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 81 transitions. Word has length 54 [2020-10-14 17:32:39,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:32:39,451 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 81 transitions. [2020-10-14 17:32:39,451 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-14 17:32:39,451 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 81 transitions. [2020-10-14 17:32:39,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-14 17:32:39,452 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:32:39,452 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:32:39,452 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-14 17:32:39,453 INFO L427 AbstractCegarLoop]: === Iteration 26 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:32:39,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:32:39,453 INFO L82 PathProgramCache]: Analyzing trace with hash -1255072396, now seen corresponding path program 2 times [2020-10-14 17:32:39,453 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:32:39,453 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1193422350] [2020-10-14 17:32:39,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:32:39,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:39,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:39,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:39,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:39,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:39,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:39,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:39,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:39,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:43,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:43,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:44,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:44,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-14 17:32:44,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 17:32:44,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 17:32:44,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:44,467 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:44,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-14 17:32:44,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 17:32:44,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-14 17:32:44,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:45,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:32:45,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:45,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:45,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:45,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:32:45,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:45,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:32:45,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:45,110 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:45,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:32:45,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:45,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:32:45,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:45,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-14 17:32:45,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:45,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:45,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:45,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:45,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:45,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:32:45,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:45,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:45,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:32:45,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:45,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:32:45,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:45,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-14 17:32:45,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:45,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:45,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:45,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:45,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:45,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:32:45,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:45,122 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:45,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:32:45,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:45,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:32:45,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:45,134 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 4 proven. 125 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 17:32:45,135 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1193422350] [2020-10-14 17:32:45,135 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:32:45,135 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-14 17:32:45,135 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613338419] [2020-10-14 17:32:45,136 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-14 17:32:45,136 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:32:45,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-14 17:32:45,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=543, Unknown=0, NotChecked=0, Total=600 [2020-10-14 17:32:45,137 INFO L87 Difference]: Start difference. First operand 75 states and 81 transitions. Second operand 25 states. [2020-10-14 17:32:46,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:32:46,285 INFO L93 Difference]: Finished difference Result 124 states and 140 transitions. [2020-10-14 17:32:46,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-14 17:32:46,286 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 56 [2020-10-14 17:32:46,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:32:46,287 INFO L225 Difference]: With dead ends: 124 [2020-10-14 17:32:46,288 INFO L226 Difference]: Without dead ends: 122 [2020-10-14 17:32:46,289 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 288 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=169, Invalid=1471, Unknown=0, NotChecked=0, Total=1640 [2020-10-14 17:32:46,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-10-14 17:32:46,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 78. [2020-10-14 17:32:46,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-10-14 17:32:46,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 86 transitions. [2020-10-14 17:32:46,311 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 86 transitions. Word has length 56 [2020-10-14 17:32:46,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:32:46,312 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 86 transitions. [2020-10-14 17:32:46,312 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-14 17:32:46,312 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 86 transitions. [2020-10-14 17:32:46,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-14 17:32:46,318 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:32:46,318 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 7, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:32:46,319 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-14 17:32:46,319 INFO L427 AbstractCegarLoop]: === Iteration 27 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:32:46,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:32:46,319 INFO L82 PathProgramCache]: Analyzing trace with hash -1918858325, now seen corresponding path program 8 times [2020-10-14 17:32:46,319 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:32:46,320 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2022038535] [2020-10-14 17:32:46,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:32:46,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:46,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:46,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:46,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 17:32:46,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:46,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 214 [2020-10-14 17:32:46,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:46,546 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:46,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 17:32:46,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 17:32:46,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-14 17:32:46,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:46,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:32:46,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:46,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:46,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:46,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:32:46,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:46,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:32:46,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:46,678 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:46,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:32:46,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:46,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:32:46,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:32:46,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-14 17:32:46,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:46,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:46,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:46,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:46,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:46,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:32:46,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:46,691 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:46,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:32:46,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:46,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:32:46,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-14 17:32:46,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-14 17:32:46,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:46,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:46,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:46,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:46,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:46,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:32:46,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:46,700 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:46,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:32:46,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:46,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:32:46,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-10-14 17:32:46,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-14 17:32:46,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:46,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:46,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:46,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:46,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:46,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:32:46,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:46,722 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:46,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:32:46,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:46,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:32:46,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:32:46,730 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 24 proven. 77 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-14 17:32:46,731 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2022038535] [2020-10-14 17:32:46,731 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:32:46,732 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 17:32:46,732 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131673551] [2020-10-14 17:32:46,732 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 17:32:46,732 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:32:46,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 17:32:46,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2020-10-14 17:32:46,733 INFO L87 Difference]: Start difference. First operand 78 states and 86 transitions. Second operand 15 states. [2020-10-14 17:32:46,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:32:46,977 INFO L93 Difference]: Finished difference Result 102 states and 113 transitions. [2020-10-14 17:32:46,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 17:32:46,977 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 59 [2020-10-14 17:32:46,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:32:46,978 INFO L225 Difference]: With dead ends: 102 [2020-10-14 17:32:46,979 INFO L226 Difference]: Without dead ends: 78 [2020-10-14 17:32:46,980 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=253, Unknown=0, NotChecked=0, Total=342 [2020-10-14 17:32:46,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-10-14 17:32:46,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2020-10-14 17:32:46,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-10-14 17:32:46,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 85 transitions. [2020-10-14 17:32:46,993 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 85 transitions. Word has length 59 [2020-10-14 17:32:46,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:32:46,993 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 85 transitions. [2020-10-14 17:32:46,994 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 17:32:46,994 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 85 transitions. [2020-10-14 17:32:46,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-14 17:32:46,994 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:32:46,995 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:32:46,995 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-14 17:32:46,995 INFO L427 AbstractCegarLoop]: === Iteration 28 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:32:46,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:32:46,995 INFO L82 PathProgramCache]: Analyzing trace with hash -751177459, now seen corresponding path program 3 times [2020-10-14 17:32:46,995 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:32:46,996 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1925846523] [2020-10-14 17:32:46,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:32:47,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:47,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:47,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:47,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:47,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:47,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:48,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:48,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:48,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:48,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:48,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:49,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:49,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:49,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:50,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:50,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:51,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:51,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:52,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:52,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-14 17:32:52,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-14 17:32:52,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 17:32:52,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:52,010 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:52,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-14 17:32:52,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 17:32:52,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-14 17:32:52,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:52,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:32:52,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:52,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:52,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:52,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:32:52,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:52,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:32:52,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:52,887 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:52,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:32:52,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:52,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:32:52,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:52,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-14 17:32:52,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:52,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:52,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:52,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:52,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:52,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:32:52,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:52,892 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:52,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:32:52,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:52,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:32:52,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:52,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-14 17:32:52,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:52,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:52,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:52,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:52,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:52,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 17:32:52,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:52,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:52,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 17:32:52,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:52,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 17:32:52,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:53,007 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 6 proven. 154 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 17:32:53,007 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1925846523] [2020-10-14 17:32:53,008 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:32:53,008 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-14 17:32:53,008 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873320614] [2020-10-14 17:32:53,008 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-14 17:32:53,009 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:32:53,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-14 17:32:53,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=614, Unknown=0, NotChecked=0, Total=702 [2020-10-14 17:32:53,009 INFO L87 Difference]: Start difference. First operand 78 states and 85 transitions. Second operand 27 states. [2020-10-14 17:32:55,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:32:55,814 INFO L93 Difference]: Finished difference Result 126 states and 144 transitions. [2020-10-14 17:32:55,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2020-10-14 17:32:55,815 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 59 [2020-10-14 17:32:55,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:32:55,816 INFO L225 Difference]: With dead ends: 126 [2020-10-14 17:32:55,817 INFO L226 Difference]: Without dead ends: 124 [2020-10-14 17:32:55,818 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 666 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=356, Invalid=3184, Unknown=0, NotChecked=0, Total=3540 [2020-10-14 17:32:55,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-10-14 17:32:55,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 94. [2020-10-14 17:32:55,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-10-14 17:32:55,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 106 transitions. [2020-10-14 17:32:55,834 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 106 transitions. Word has length 59 [2020-10-14 17:32:55,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:32:55,834 INFO L479 AbstractCegarLoop]: Abstraction has 94 states and 106 transitions. [2020-10-14 17:32:55,834 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-14 17:32:55,834 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 106 transitions. [2020-10-14 17:32:55,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-14 17:32:55,835 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:32:55,835 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 8, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:32:55,835 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-14 17:32:55,835 INFO L427 AbstractCegarLoop]: === Iteration 29 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:32:55,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:32:55,836 INFO L82 PathProgramCache]: Analyzing trace with hash -1295489678, now seen corresponding path program 9 times [2020-10-14 17:32:55,836 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:32:55,836 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [474098888] [2020-10-14 17:32:55,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:32:55,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:55,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:55,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:56,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:59,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:00,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:00,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 17:33:00,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 17:33:00,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 17:33:00,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:00,852 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:00,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-14 17:33:00,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 17:33:00,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-14 17:33:00,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:01,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:33:01,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:01,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:01,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:01,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:33:01,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:01,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:33:01,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:01,377 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:01,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:33:01,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:01,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:33:01,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:33:01,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-14 17:33:01,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:01,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:01,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:01,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:33:01,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:01,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:33:01,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:01,386 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:01,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:33:01,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:01,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:33:01,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:33:01,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-14 17:33:01,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:01,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:01,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:01,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:33:01,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:01,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 17:33:01,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:01,396 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:01,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:33:01,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:01,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:33:01,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:33:01,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-14 17:33:01,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:01,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:01,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:01,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:33:01,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:01,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 17:33:01,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:01,406 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:01,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 17:33:01,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:01,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 17:33:01,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:33:01,543 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 11 proven. 119 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-14 17:33:01,543 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [474098888] [2020-10-14 17:33:01,543 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:33:01,544 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-14 17:33:01,544 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778717782] [2020-10-14 17:33:01,545 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-14 17:33:01,545 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:33:01,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-14 17:33:01,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=462, Unknown=0, NotChecked=0, Total=506 [2020-10-14 17:33:01,546 INFO L87 Difference]: Start difference. First operand 94 states and 106 transitions. Second operand 23 states. [2020-10-14 17:33:02,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:33:02,896 INFO L93 Difference]: Finished difference Result 119 states and 136 transitions. [2020-10-14 17:33:02,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-14 17:33:02,898 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 62 [2020-10-14 17:33:02,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:33:02,900 INFO L225 Difference]: With dead ends: 119 [2020-10-14 17:33:02,900 INFO L226 Difference]: Without dead ends: 117 [2020-10-14 17:33:02,901 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=128, Invalid=1278, Unknown=0, NotChecked=0, Total=1406 [2020-10-14 17:33:02,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-10-14 17:33:02,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 105. [2020-10-14 17:33:02,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-10-14 17:33:02,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 120 transitions. [2020-10-14 17:33:02,918 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 120 transitions. Word has length 62 [2020-10-14 17:33:02,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:33:02,918 INFO L479 AbstractCegarLoop]: Abstraction has 105 states and 120 transitions. [2020-10-14 17:33:02,918 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-14 17:33:02,918 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 120 transitions. [2020-10-14 17:33:02,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-14 17:33:02,919 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:33:02,919 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:33:02,920 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-14 17:33:02,920 INFO L427 AbstractCegarLoop]: === Iteration 30 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:33:02,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:33:02,920 INFO L82 PathProgramCache]: Analyzing trace with hash -127808812, now seen corresponding path program 4 times [2020-10-14 17:33:02,920 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:33:02,920 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [935343946] [2020-10-14 17:33:02,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:33:02,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:02,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:03,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:03,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:03,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:03,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:03,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:03,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:03,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:04,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:05,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:07,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:07,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:07,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:07,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:07,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 17:33:07,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-14 17:33:07,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 17:33:07,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:07,932 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:07,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-14 17:33:07,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 17:33:07,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-14 17:33:07,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:08,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:33:08,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:08,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:08,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:08,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:33:08,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:08,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:33:08,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:08,763 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:08,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:33:08,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:08,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:33:08,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:08,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-14 17:33:08,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:08,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:08,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:08,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:33:08,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:08,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:33:08,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:08,767 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:08,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:33:08,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:08,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:33:08,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:08,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-14 17:33:08,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:08,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:08,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:08,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:33:08,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:08,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:33:08,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:08,773 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:08,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:33:08,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:08,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:33:08,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:08,785 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 7 proven. 181 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 17:33:08,786 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [935343946] [2020-10-14 17:33:08,786 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:33:08,786 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-14 17:33:08,786 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137361086] [2020-10-14 17:33:08,786 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-14 17:33:08,787 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:33:08,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-14 17:33:08,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=794, Unknown=0, NotChecked=0, Total=870 [2020-10-14 17:33:08,787 INFO L87 Difference]: Start difference. First operand 105 states and 120 transitions. Second operand 30 states. [2020-10-14 17:33:10,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:33:10,497 INFO L93 Difference]: Finished difference Result 133 states and 151 transitions. [2020-10-14 17:33:10,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-14 17:33:10,499 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 62 [2020-10-14 17:33:10,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:33:10,500 INFO L225 Difference]: With dead ends: 133 [2020-10-14 17:33:10,500 INFO L226 Difference]: Without dead ends: 131 [2020-10-14 17:33:10,501 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 398 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=246, Invalid=1916, Unknown=0, NotChecked=0, Total=2162 [2020-10-14 17:33:10,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-10-14 17:33:10,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 103. [2020-10-14 17:33:10,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-14 17:33:10,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 114 transitions. [2020-10-14 17:33:10,518 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 114 transitions. Word has length 62 [2020-10-14 17:33:10,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:33:10,518 INFO L479 AbstractCegarLoop]: Abstraction has 103 states and 114 transitions. [2020-10-14 17:33:10,518 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-14 17:33:10,519 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 114 transitions. [2020-10-14 17:33:10,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-14 17:33:10,519 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:33:10,519 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:33:10,520 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-14 17:33:10,520 INFO L427 AbstractCegarLoop]: === Iteration 31 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:33:10,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:33:10,520 INFO L82 PathProgramCache]: Analyzing trace with hash 1371949611, now seen corresponding path program 5 times [2020-10-14 17:33:10,521 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:33:10,521 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [954123608] [2020-10-14 17:33:10,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:33:10,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:10,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:10,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:10,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:10,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:10,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:11,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:11,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:15,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:15,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-14 17:33:15,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 17:33:15,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 17:33:15,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:15,533 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:15,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-14 17:33:15,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 17:33:15,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-14 17:33:15,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:16,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:33:16,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:16,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:16,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:16,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:33:16,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:16,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:33:16,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:16,153 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:16,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:33:16,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:16,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:33:16,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:33:16,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-14 17:33:16,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:16,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:16,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:16,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:33:16,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:16,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 17:33:16,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:16,168 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:16,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:33:16,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:16,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:33:16,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:33:16,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-14 17:33:16,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:16,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:16,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:16,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:33:16,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:16,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 17:33:16,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:16,180 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:16,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 17:33:16,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:16,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 17:33:16,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:33:16,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-14 17:33:16,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:16,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:16,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:16,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:33:16,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:16,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 17:33:16,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:16,274 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:16,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:33:16,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:16,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:33:16,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:33:16,307 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 8 proven. 139 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-14 17:33:16,307 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [954123608] [2020-10-14 17:33:16,308 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:33:16,308 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-14 17:33:16,308 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980073083] [2020-10-14 17:33:16,309 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-14 17:33:16,309 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:33:16,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-14 17:33:16,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=646, Unknown=0, NotChecked=0, Total=702 [2020-10-14 17:33:16,310 INFO L87 Difference]: Start difference. First operand 103 states and 114 transitions. Second operand 27 states. [2020-10-14 17:33:18,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:33:18,096 INFO L93 Difference]: Finished difference Result 125 states and 138 transitions. [2020-10-14 17:33:18,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-14 17:33:18,097 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 64 [2020-10-14 17:33:18,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:33:18,099 INFO L225 Difference]: With dead ends: 125 [2020-10-14 17:33:18,099 INFO L226 Difference]: Without dead ends: 123 [2020-10-14 17:33:18,101 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=194, Invalid=2062, Unknown=0, NotChecked=0, Total=2256 [2020-10-14 17:33:18,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-10-14 17:33:18,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 86. [2020-10-14 17:33:18,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-10-14 17:33:18,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 93 transitions. [2020-10-14 17:33:18,115 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 93 transitions. Word has length 64 [2020-10-14 17:33:18,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:33:18,115 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 93 transitions. [2020-10-14 17:33:18,115 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-14 17:33:18,116 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 93 transitions. [2020-10-14 17:33:18,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-14 17:33:18,116 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:33:18,116 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:33:18,117 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-14 17:33:18,117 INFO L427 AbstractCegarLoop]: === Iteration 32 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:33:18,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:33:18,117 INFO L82 PathProgramCache]: Analyzing trace with hash -332237628, now seen corresponding path program 6 times [2020-10-14 17:33:18,117 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:33:18,117 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1924032761] [2020-10-14 17:33:18,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:33:18,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:18,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:18,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:18,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:18,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:19,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:19,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:19,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:23,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:23,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 17:33:23,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 17:33:23,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 17:33:23,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:23,132 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:23,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-14 17:33:23,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 17:33:23,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-14 17:33:23,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:23,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:33:23,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:23,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:23,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:23,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:33:23,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:23,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:33:23,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:23,940 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:23,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:33:23,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:23,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:33:23,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:23,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-14 17:33:23,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:23,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:23,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:23,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:33:23,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:23,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:33:23,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:23,944 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:23,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:33:23,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:23,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:33:23,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:23,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-14 17:33:23,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:23,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:23,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:23,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:33:23,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:23,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 17:33:23,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:23,955 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:23,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 17:33:23,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:23,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 17:33:23,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:24,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-14 17:33:24,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:24,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:24,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:24,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:33:24,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:24,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:33:24,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:24,039 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:24,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:33:24,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:24,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:33:24,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:24,056 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 8 proven. 167 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-14 17:33:24,056 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1924032761] [2020-10-14 17:33:24,056 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:33:24,056 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-14 17:33:24,057 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274887800] [2020-10-14 17:33:24,057 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-14 17:33:24,057 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:33:24,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-14 17:33:24,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=732, Unknown=0, NotChecked=0, Total=812 [2020-10-14 17:33:24,058 INFO L87 Difference]: Start difference. First operand 86 states and 93 transitions. Second operand 29 states. [2020-10-14 17:33:27,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:33:27,697 INFO L93 Difference]: Finished difference Result 151 states and 170 transitions. [2020-10-14 17:33:27,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2020-10-14 17:33:27,697 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 67 [2020-10-14 17:33:27,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:33:27,699 INFO L225 Difference]: With dead ends: 151 [2020-10-14 17:33:27,699 INFO L226 Difference]: Without dead ends: 149 [2020-10-14 17:33:27,700 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 865 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=403, Invalid=4019, Unknown=0, NotChecked=0, Total=4422 [2020-10-14 17:33:27,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-10-14 17:33:27,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 108. [2020-10-14 17:33:27,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-10-14 17:33:27,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 120 transitions. [2020-10-14 17:33:27,719 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 120 transitions. Word has length 67 [2020-10-14 17:33:27,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:33:27,719 INFO L479 AbstractCegarLoop]: Abstraction has 108 states and 120 transitions. [2020-10-14 17:33:27,719 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-14 17:33:27,719 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 120 transitions. [2020-10-14 17:33:27,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-14 17:33:27,720 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:33:27,720 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 8, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:33:27,720 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-14 17:33:27,720 INFO L427 AbstractCegarLoop]: === Iteration 33 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:33:27,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:33:27,721 INFO L82 PathProgramCache]: Analyzing trace with hash -552815575, now seen corresponding path program 10 times [2020-10-14 17:33:27,721 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:33:27,721 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [929697451] [2020-10-14 17:33:27,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:33:27,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:27,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:27,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:27,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-14 17:33:27,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:27,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 175 [2020-10-14 17:33:27,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:27,910 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:27,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 17:33:27,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 17:33:27,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-14 17:33:27,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:28,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:33:28,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:28,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:28,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:28,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:33:28,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:28,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:33:28,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:28,071 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:28,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:33:28,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:28,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:33:28,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:28,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-14 17:33:28,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:28,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:28,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:28,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:33:28,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:28,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:33:28,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:28,076 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:28,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:33:28,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:28,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:33:28,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:28,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-14 17:33:28,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:28,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:28,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:28,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:33:28,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:28,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:33:28,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:28,080 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:28,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:33:28,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:28,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:33:28,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:28,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-14 17:33:28,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:28,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:28,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:28,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:33:28,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:28,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:33:28,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:28,084 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:28,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:33:28,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:28,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:33:28,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:28,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-14 17:33:28,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:28,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:28,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:28,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:33:28,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:28,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:33:28,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:28,088 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:28,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:33:28,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:28,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:33:28,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:28,095 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 40 proven. 100 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-14 17:33:28,095 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [929697451] [2020-10-14 17:33:28,096 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:33:28,096 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 17:33:28,096 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332168588] [2020-10-14 17:33:28,096 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 17:33:28,096 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:33:28,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 17:33:28,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2020-10-14 17:33:28,097 INFO L87 Difference]: Start difference. First operand 108 states and 120 transitions. Second operand 17 states. [2020-10-14 17:33:28,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:33:28,439 INFO L93 Difference]: Finished difference Result 136 states and 152 transitions. [2020-10-14 17:33:28,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 17:33:28,440 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 70 [2020-10-14 17:33:28,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:33:28,442 INFO L225 Difference]: With dead ends: 136 [2020-10-14 17:33:28,442 INFO L226 Difference]: Without dead ends: 108 [2020-10-14 17:33:28,443 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=117, Invalid=345, Unknown=0, NotChecked=0, Total=462 [2020-10-14 17:33:28,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-10-14 17:33:28,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2020-10-14 17:33:28,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-10-14 17:33:28,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 119 transitions. [2020-10-14 17:33:28,461 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 119 transitions. Word has length 70 [2020-10-14 17:33:28,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:33:28,461 INFO L479 AbstractCegarLoop]: Abstraction has 108 states and 119 transitions. [2020-10-14 17:33:28,461 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 17:33:28,461 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 119 transitions. [2020-10-14 17:33:28,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-14 17:33:28,462 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:33:28,462 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:33:28,463 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-14 17:33:28,463 INFO L427 AbstractCegarLoop]: === Iteration 34 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:33:28,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:33:28,463 INFO L82 PathProgramCache]: Analyzing trace with hash 1034131339, now seen corresponding path program 7 times [2020-10-14 17:33:28,463 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:33:28,463 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1861328142] [2020-10-14 17:33:28,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:33:28,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:28,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:28,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:28,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:28,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:28,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:29,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:29,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:29,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:30,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:30,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:31,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:31,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:32,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:33,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:33,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-14 17:33:33,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-14 17:33:33,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-14 17:33:33,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:33,482 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:33,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-14 17:33:33,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 17:33:33,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-14 17:33:33,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:34,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:33:34,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:34,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:34,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:34,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:33:34,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:34,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:33:34,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:34,447 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:34,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:33:34,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:34,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:33:34,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:34,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-14 17:33:34,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:34,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:34,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:34,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:33:34,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:34,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:33:34,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:34,452 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:34,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:33:34,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:34,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:33:34,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:34,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-14 17:33:34,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:34,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:34,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:34,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:33:34,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:34,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 17:33:34,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:34,459 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:34,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 17:33:34,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:34,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 17:33:34,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:34,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-14 17:33:34,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:34,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:34,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:34,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:33:34,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:34,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:33:34,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:34,581 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:34,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:33:34,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:34,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:33:34,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:34,597 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 8 proven. 198 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-14 17:33:34,597 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1861328142] [2020-10-14 17:33:34,597 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:33:34,597 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-14 17:33:34,597 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187018331] [2020-10-14 17:33:34,597 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-14 17:33:34,598 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:33:34,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-14 17:33:34,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=784, Unknown=0, NotChecked=0, Total=870 [2020-10-14 17:33:34,599 INFO L87 Difference]: Start difference. First operand 108 states and 119 transitions. Second operand 30 states. [2020-10-14 17:33:37,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:33:37,758 INFO L93 Difference]: Finished difference Result 128 states and 142 transitions. [2020-10-14 17:33:37,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-10-14 17:33:37,759 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 70 [2020-10-14 17:33:37,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:33:37,760 INFO L225 Difference]: With dead ends: 128 [2020-10-14 17:33:37,761 INFO L226 Difference]: Without dead ends: 126 [2020-10-14 17:33:37,762 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 473 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=401, Invalid=2791, Unknown=0, NotChecked=0, Total=3192 [2020-10-14 17:33:37,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-10-14 17:33:37,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 114. [2020-10-14 17:33:37,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-10-14 17:33:37,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 126 transitions. [2020-10-14 17:33:37,784 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 126 transitions. Word has length 70 [2020-10-14 17:33:37,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:33:37,784 INFO L479 AbstractCegarLoop]: Abstraction has 114 states and 126 transitions. [2020-10-14 17:33:37,784 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-14 17:33:37,784 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 126 transitions. [2020-10-14 17:33:37,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-14 17:33:37,791 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:33:37,792 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:33:37,792 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-14 17:33:37,792 INFO L427 AbstractCegarLoop]: === Iteration 35 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:33:37,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:33:37,792 INFO L82 PathProgramCache]: Analyzing trace with hash 1230688226, now seen corresponding path program 8 times [2020-10-14 17:33:37,792 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:33:37,793 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [963433174] [2020-10-14 17:33:37,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:33:37,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:37,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:37,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:37,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:38,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:38,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:42,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:42,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 17:33:42,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 17:33:42,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 17:33:42,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:42,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:42,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-14 17:33:42,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 17:33:42,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 17:33:42,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:43,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:33:43,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:43,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:43,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:43,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:33:43,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:43,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:33:43,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:43,350 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:43,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:33:43,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:43,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:33:43,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:43,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-14 17:33:43,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:43,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:43,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:43,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:33:43,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:43,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:33:43,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:43,355 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:43,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:33:43,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:43,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:33:43,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:43,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-14 17:33:43,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:43,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:43,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:43,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:33:43,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:43,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:33:43,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:43,359 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:43,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:33:43,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:43,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:33:43,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:43,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-14 17:33:43,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:43,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:43,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:43,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:33:43,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:43,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 17:33:43,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:43,366 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:43,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 17:33:43,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:43,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 17:33:43,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:43,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-14 17:33:43,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:43,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:43,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:43,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:33:43,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:43,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:33:43,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:43,476 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:43,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:33:43,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:43,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:33:43,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:43,488 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 13 proven. 153 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-14 17:33:43,489 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [963433174] [2020-10-14 17:33:43,489 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:33:43,489 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-14 17:33:43,489 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161808732] [2020-10-14 17:33:43,489 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-14 17:33:43,490 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:33:43,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-14 17:33:43,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=599, Unknown=0, NotChecked=0, Total=650 [2020-10-14 17:33:43,490 INFO L87 Difference]: Start difference. First operand 114 states and 126 transitions. Second operand 26 states. [2020-10-14 17:33:44,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:33:44,927 INFO L93 Difference]: Finished difference Result 132 states and 147 transitions. [2020-10-14 17:33:44,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-14 17:33:44,928 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 72 [2020-10-14 17:33:44,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:33:44,929 INFO L225 Difference]: With dead ends: 132 [2020-10-14 17:33:44,929 INFO L226 Difference]: Without dead ends: 130 [2020-10-14 17:33:44,930 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=118, Invalid=1364, Unknown=0, NotChecked=0, Total=1482 [2020-10-14 17:33:44,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-10-14 17:33:44,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 118. [2020-10-14 17:33:44,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-10-14 17:33:44,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 131 transitions. [2020-10-14 17:33:44,954 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 131 transitions. Word has length 72 [2020-10-14 17:33:44,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:33:44,954 INFO L479 AbstractCegarLoop]: Abstraction has 118 states and 131 transitions. [2020-10-14 17:33:44,954 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-14 17:33:44,954 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 131 transitions. [2020-10-14 17:33:44,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-14 17:33:44,956 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:33:44,956 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:33:44,956 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-14 17:33:44,956 INFO L427 AbstractCegarLoop]: === Iteration 36 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:33:44,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:33:44,956 INFO L82 PathProgramCache]: Analyzing trace with hash -1897705093, now seen corresponding path program 9 times [2020-10-14 17:33:44,956 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:33:44,956 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [237783336] [2020-10-14 17:33:44,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:33:44,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:44,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:45,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:45,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:45,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:45,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:46,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:48,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:49,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:49,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:49,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-14 17:33:49,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 17:33:49,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 17:33:49,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:49,969 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:49,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-14 17:33:49,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 17:33:49,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-14 17:33:49,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:50,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:33:50,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:50,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:50,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:50,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:33:50,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:50,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:33:50,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:50,785 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:50,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:33:50,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:50,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:33:50,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:50,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-14 17:33:50,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:50,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:50,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:50,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:33:50,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:50,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:33:50,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:50,790 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:50,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:33:50,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:50,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:33:50,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:50,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-14 17:33:50,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:50,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:50,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:50,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:33:50,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:50,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:33:50,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:50,797 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:50,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:33:50,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:50,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:33:50,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:33:50,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-14 17:33:50,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:50,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:50,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:50,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:33:50,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:50,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:33:50,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:50,803 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:50,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 17:33:50,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:50,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 17:33:50,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:50,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-14 17:33:50,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:50,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:50,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:50,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:33:50,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:50,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:33:50,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:50,879 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:50,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:33:50,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:50,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:33:50,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:50,894 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 13 proven. 181 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-14 17:33:50,894 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [237783336] [2020-10-14 17:33:50,895 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:33:50,895 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-14 17:33:50,895 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749498560] [2020-10-14 17:33:50,895 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-14 17:33:50,895 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:33:50,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-14 17:33:50,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=680, Unknown=0, NotChecked=0, Total=756 [2020-10-14 17:33:50,896 INFO L87 Difference]: Start difference. First operand 118 states and 131 transitions. Second operand 28 states. [2020-10-14 17:33:53,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:33:53,176 INFO L93 Difference]: Finished difference Result 144 states and 161 transitions. [2020-10-14 17:33:53,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-14 17:33:53,177 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 75 [2020-10-14 17:33:53,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:33:53,180 INFO L225 Difference]: With dead ends: 144 [2020-10-14 17:33:53,180 INFO L226 Difference]: Without dead ends: 142 [2020-10-14 17:33:53,181 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 334 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=225, Invalid=2225, Unknown=0, NotChecked=0, Total=2450 [2020-10-14 17:33:53,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-10-14 17:33:53,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 114. [2020-10-14 17:33:53,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-10-14 17:33:53,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 126 transitions. [2020-10-14 17:33:53,202 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 126 transitions. Word has length 75 [2020-10-14 17:33:53,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:33:53,202 INFO L479 AbstractCegarLoop]: Abstraction has 114 states and 126 transitions. [2020-10-14 17:33:53,202 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-14 17:33:53,202 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 126 transitions. [2020-10-14 17:33:53,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-14 17:33:53,203 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:33:53,203 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:33:53,203 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-14 17:33:53,204 INFO L427 AbstractCegarLoop]: === Iteration 37 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:33:53,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:33:53,204 INFO L82 PathProgramCache]: Analyzing trace with hash 927251778, now seen corresponding path program 10 times [2020-10-14 17:33:53,204 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:33:53,204 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1187095938] [2020-10-14 17:33:53,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:33:53,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:53,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:53,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:53,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:53,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:53,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:54,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:55,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:58,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:58,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-14 17:33:58,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 17:33:58,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 17:33:58,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:58,219 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:58,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-14 17:33:58,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 17:33:58,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 17:33:58,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:59,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:33:59,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:59,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:59,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:59,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:33:59,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:59,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:33:59,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:59,323 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:59,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:33:59,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:59,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:33:59,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:59,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-14 17:33:59,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:59,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:59,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:59,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:33:59,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:59,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:33:59,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:59,328 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:59,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:33:59,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:59,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:33:59,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:59,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-14 17:33:59,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:59,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:59,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:59,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:33:59,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:59,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:33:59,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:59,332 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:59,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:33:59,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:59,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:33:59,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:59,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-14 17:33:59,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:59,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:59,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:59,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:33:59,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:59,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:33:59,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:59,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:59,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 17:33:59,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:59,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 17:33:59,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:59,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-14 17:33:59,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:59,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:59,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:59,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:33:59,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:59,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:33:59,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:59,435 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:59,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:33:59,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:59,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:33:59,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:59,452 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 13 proven. 212 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-14 17:33:59,452 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1187095938] [2020-10-14 17:33:59,452 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:33:59,453 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-14 17:33:59,453 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547138883] [2020-10-14 17:33:59,453 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-14 17:33:59,453 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:33:59,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-14 17:33:59,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=765, Unknown=0, NotChecked=0, Total=870 [2020-10-14 17:33:59,454 INFO L87 Difference]: Start difference. First operand 114 states and 126 transitions. Second operand 30 states. [2020-10-14 17:34:04,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:34:04,024 INFO L93 Difference]: Finished difference Result 173 states and 198 transitions. [2020-10-14 17:34:04,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2020-10-14 17:34:04,024 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 78 [2020-10-14 17:34:04,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:34:04,026 INFO L225 Difference]: With dead ends: 173 [2020-10-14 17:34:04,026 INFO L226 Difference]: Without dead ends: 171 [2020-10-14 17:34:04,028 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1100 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=487, Invalid=4915, Unknown=0, NotChecked=0, Total=5402 [2020-10-14 17:34:04,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-10-14 17:34:04,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 132. [2020-10-14 17:34:04,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-10-14 17:34:04,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 150 transitions. [2020-10-14 17:34:04,058 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 150 transitions. Word has length 78 [2020-10-14 17:34:04,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:34:04,059 INFO L479 AbstractCegarLoop]: Abstraction has 132 states and 150 transitions. [2020-10-14 17:34:04,059 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-14 17:34:04,059 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 150 transitions. [2020-10-14 17:34:04,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-14 17:34:04,060 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:34:04,060 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:34:04,060 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-14 17:34:04,061 INFO L427 AbstractCegarLoop]: === Iteration 38 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:34:04,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:34:04,061 INFO L82 PathProgramCache]: Analyzing trace with hash -142233959, now seen corresponding path program 11 times [2020-10-14 17:34:04,061 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:34:04,061 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1212825004] [2020-10-14 17:34:04,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:34:04,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:04,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:04,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:04,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:04,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-14 17:34:04,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:34:04,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 448 [2020-10-14 17:34:04,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:04,521 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:04,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 17:34:04,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 17:34:04,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 17:34:04,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:04,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:34:04,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:04,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:04,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:04,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:34:04,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:04,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:34:04,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:04,737 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:04,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:34:04,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:04,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:34:04,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:34:04,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-14 17:34:04,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:04,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:04,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:04,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:34:04,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:04,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:34:04,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:04,742 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:04,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:34:04,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:04,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:34:04,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:04,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-14 17:34:04,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:04,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:04,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:04,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:34:04,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:04,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:34:04,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:04,748 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:04,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:34:04,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:04,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:34:04,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:04,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-14 17:34:04,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:04,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:04,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:04,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:34:04,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:04,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:34:04,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:04,754 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:04,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:34:04,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:04,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:34:04,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:04,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-14 17:34:04,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:04,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:04,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:04,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:34:04,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:04,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:34:04,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:04,758 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:04,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:34:04,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:04,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:34:04,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:04,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-14 17:34:04,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:04,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:04,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:04,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:34:04,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:04,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:34:04,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:04,763 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:04,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:34:04,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:04,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:34:04,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:04,768 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 60 proven. 117 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-14 17:34:04,769 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1212825004] [2020-10-14 17:34:04,769 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:34:04,769 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-14 17:34:04,769 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609770253] [2020-10-14 17:34:04,769 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-14 17:34:04,769 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:34:04,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-14 17:34:04,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2020-10-14 17:34:04,770 INFO L87 Difference]: Start difference. First operand 132 states and 150 transitions. Second operand 19 states. [2020-10-14 17:34:05,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:34:05,200 INFO L93 Difference]: Finished difference Result 153 states and 173 transitions. [2020-10-14 17:34:05,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 17:34:05,201 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 80 [2020-10-14 17:34:05,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:34:05,202 INFO L225 Difference]: With dead ends: 153 [2020-10-14 17:34:05,203 INFO L226 Difference]: Without dead ends: 117 [2020-10-14 17:34:05,204 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=149, Invalid=451, Unknown=0, NotChecked=0, Total=600 [2020-10-14 17:34:05,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-10-14 17:34:05,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2020-10-14 17:34:05,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-10-14 17:34:05,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 131 transitions. [2020-10-14 17:34:05,221 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 131 transitions. Word has length 80 [2020-10-14 17:34:05,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:34:05,221 INFO L479 AbstractCegarLoop]: Abstraction has 117 states and 131 transitions. [2020-10-14 17:34:05,221 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-14 17:34:05,221 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 131 transitions. [2020-10-14 17:34:05,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-14 17:34:05,222 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:34:05,222 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:34:05,222 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-14 17:34:05,223 INFO L427 AbstractCegarLoop]: === Iteration 39 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:34:05,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:34:05,223 INFO L82 PathProgramCache]: Analyzing trace with hash -666769381, now seen corresponding path program 12 times [2020-10-14 17:34:05,223 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:34:05,223 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1910454691] [2020-10-14 17:34:05,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:34:05,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:05,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:05,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:05,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:05,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:05,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:06,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:07,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:07,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:10,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:10,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-14 17:34:10,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 17:34:10,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 17:34:10,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:10,237 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:10,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-14 17:34:10,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 17:34:10,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-14 17:34:10,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:11,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:34:11,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:11,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:11,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:11,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:34:11,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:11,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:34:11,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:11,264 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:11,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:34:11,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:11,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:34:11,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:11,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-14 17:34:11,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:11,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:11,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:11,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:34:11,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:11,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:34:11,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:11,268 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:11,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:34:11,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:11,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:34:11,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:11,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-14 17:34:11,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:11,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:11,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:11,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:34:11,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:11,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:34:11,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:11,272 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:11,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:34:11,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:11,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:34:11,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:11,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-14 17:34:11,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:11,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:11,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:11,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:34:11,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:11,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:34:11,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:11,278 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:11,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 17:34:11,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:11,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 17:34:11,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:11,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-14 17:34:11,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:11,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:11,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:11,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:34:11,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:11,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:34:11,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:11,410 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:11,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:34:11,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:11,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:34:11,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:11,428 INFO L134 CoverageAnalysis]: Checked inductivity of 274 backedges. 16 proven. 243 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-14 17:34:11,428 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1910454691] [2020-10-14 17:34:11,428 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:34:11,428 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-14 17:34:11,428 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69887351] [2020-10-14 17:34:11,428 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-14 17:34:11,429 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:34:11,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-14 17:34:11,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=916, Unknown=0, NotChecked=0, Total=992 [2020-10-14 17:34:11,429 INFO L87 Difference]: Start difference. First operand 117 states and 131 transitions. Second operand 32 states. [2020-10-14 17:34:14,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:34:14,513 INFO L93 Difference]: Finished difference Result 143 states and 161 transitions. [2020-10-14 17:34:14,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-10-14 17:34:14,514 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 81 [2020-10-14 17:34:14,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:34:14,516 INFO L225 Difference]: With dead ends: 143 [2020-10-14 17:34:14,516 INFO L226 Difference]: Without dead ends: 141 [2020-10-14 17:34:14,517 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 601 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=373, Invalid=3287, Unknown=0, NotChecked=0, Total=3660 [2020-10-14 17:34:14,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2020-10-14 17:34:14,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 103. [2020-10-14 17:34:14,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-14 17:34:14,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 112 transitions. [2020-10-14 17:34:14,535 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 112 transitions. Word has length 81 [2020-10-14 17:34:14,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:34:14,535 INFO L479 AbstractCegarLoop]: Abstraction has 103 states and 112 transitions. [2020-10-14 17:34:14,535 INFO L480 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-14 17:34:14,536 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 112 transitions. [2020-10-14 17:34:14,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-14 17:34:14,536 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:34:14,536 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:34:14,537 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-14 17:34:14,537 INFO L427 AbstractCegarLoop]: === Iteration 40 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:34:14,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:34:14,537 INFO L82 PathProgramCache]: Analyzing trace with hash 1306756914, now seen corresponding path program 13 times [2020-10-14 17:34:14,537 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:34:14,537 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [192220888] [2020-10-14 17:34:14,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:34:14,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:14,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:14,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:14,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:15,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:15,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:15,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:19,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:19,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-14 17:34:19,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 17:34:19,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 17:34:19,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:19,549 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:19,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-14 17:34:19,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 17:34:19,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-14 17:34:19,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:20,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:34:20,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:20,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:20,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:20,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:34:20,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:20,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:34:20,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:20,216 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:20,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:34:20,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:20,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:34:20,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:20,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-14 17:34:20,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:20,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:20,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:20,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:34:20,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:20,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:34:20,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:20,221 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:20,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:34:20,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:20,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:34:20,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:20,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-14 17:34:20,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:20,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:20,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:20,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:34:20,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:20,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:34:20,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:20,225 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:20,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:34:20,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:20,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:34:20,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:20,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-14 17:34:20,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:20,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:20,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:20,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:34:20,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:20,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:34:20,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:20,229 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:20,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:34:20,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:20,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:34:20,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:20,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-14 17:34:20,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:20,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:20,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:20,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:34:20,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:20,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:34:20,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:20,234 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:20,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 17:34:20,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:20,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 17:34:20,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:20,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-14 17:34:20,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:20,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:20,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:20,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:34:20,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:20,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:34:20,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:20,318 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:20,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:34:20,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:20,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:34:20,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:20,333 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 18 proven. 199 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-10-14 17:34:20,333 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [192220888] [2020-10-14 17:34:20,333 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:34:20,334 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-14 17:34:20,334 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049085821] [2020-10-14 17:34:20,334 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-14 17:34:20,334 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:34:20,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-14 17:34:20,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=701, Unknown=0, NotChecked=0, Total=756 [2020-10-14 17:34:20,335 INFO L87 Difference]: Start difference. First operand 103 states and 112 transitions. Second operand 28 states. [2020-10-14 17:34:22,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:34:22,188 INFO L93 Difference]: Finished difference Result 121 states and 133 transitions. [2020-10-14 17:34:22,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-14 17:34:22,189 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 83 [2020-10-14 17:34:22,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:34:22,190 INFO L225 Difference]: With dead ends: 121 [2020-10-14 17:34:22,190 INFO L226 Difference]: Without dead ends: 119 [2020-10-14 17:34:22,192 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=126, Invalid=1596, Unknown=0, NotChecked=0, Total=1722 [2020-10-14 17:34:22,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-10-14 17:34:22,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 103. [2020-10-14 17:34:22,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-14 17:34:22,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 112 transitions. [2020-10-14 17:34:22,215 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 112 transitions. Word has length 83 [2020-10-14 17:34:22,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:34:22,216 INFO L479 AbstractCegarLoop]: Abstraction has 103 states and 112 transitions. [2020-10-14 17:34:22,216 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-14 17:34:22,216 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 112 transitions. [2020-10-14 17:34:22,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-14 17:34:22,218 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:34:22,218 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:34:22,218 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-14 17:34:22,218 INFO L427 AbstractCegarLoop]: === Iteration 41 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:34:22,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:34:22,219 INFO L82 PathProgramCache]: Analyzing trace with hash -522437639, now seen corresponding path program 14 times [2020-10-14 17:34:22,219 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:34:22,219 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1634227130] [2020-10-14 17:34:22,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:34:22,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:22,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:22,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:22,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:22,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:22,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:22,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:24,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:27,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:27,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-14 17:34:27,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 17:34:27,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 17:34:27,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:27,233 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:27,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-14 17:34:27,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 17:34:27,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-14 17:34:27,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:28,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:34:28,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:28,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:28,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:28,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:34:28,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:28,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:34:28,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:28,032 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:28,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:34:28,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:28,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:34:28,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:28,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-14 17:34:28,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:28,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:28,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:28,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:34:28,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:28,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:34:28,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:28,038 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:28,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:34:28,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:28,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:34:28,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:28,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-14 17:34:28,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:28,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:28,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:28,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:34:28,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:28,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:34:28,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:28,042 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:28,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:34:28,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:28,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:34:28,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:28,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-14 17:34:28,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:28,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:28,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:28,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:34:28,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:28,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:34:28,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:28,046 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:28,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:34:28,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:28,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:34:28,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:28,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-14 17:34:28,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:28,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:28,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:28,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:34:28,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:28,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:34:28,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:28,051 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:28,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 17:34:28,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:28,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 17:34:28,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:28,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-14 17:34:28,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:28,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:28,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:28,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:34:28,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:28,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:34:28,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:28,145 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:28,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:34:28,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:28,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:34:28,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:28,163 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 18 proven. 230 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-10-14 17:34:28,164 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1634227130] [2020-10-14 17:34:28,164 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:34:28,164 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-14 17:34:28,164 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100292836] [2020-10-14 17:34:28,165 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-14 17:34:28,165 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:34:28,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-14 17:34:28,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=809, Unknown=0, NotChecked=0, Total=870 [2020-10-14 17:34:28,165 INFO L87 Difference]: Start difference. First operand 103 states and 112 transitions. Second operand 30 states. [2020-10-14 17:34:31,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:34:31,297 INFO L93 Difference]: Finished difference Result 155 states and 176 transitions. [2020-10-14 17:34:31,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2020-10-14 17:34:31,297 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 86 [2020-10-14 17:34:31,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:34:31,298 INFO L225 Difference]: With dead ends: 155 [2020-10-14 17:34:31,298 INFO L226 Difference]: Without dead ends: 153 [2020-10-14 17:34:31,299 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 670 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=300, Invalid=3732, Unknown=0, NotChecked=0, Total=4032 [2020-10-14 17:34:31,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-10-14 17:34:31,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 121. [2020-10-14 17:34:31,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-10-14 17:34:31,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 136 transitions. [2020-10-14 17:34:31,327 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 136 transitions. Word has length 86 [2020-10-14 17:34:31,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:34:31,328 INFO L479 AbstractCegarLoop]: Abstraction has 121 states and 136 transitions. [2020-10-14 17:34:31,328 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-14 17:34:31,328 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 136 transitions. [2020-10-14 17:34:31,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-14 17:34:31,329 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:34:31,329 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:34:31,330 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-14 17:34:31,330 INFO L427 AbstractCegarLoop]: === Iteration 42 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:34:31,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:34:31,330 INFO L82 PathProgramCache]: Analyzing trace with hash 487685586, now seen corresponding path program 15 times [2020-10-14 17:34:31,330 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:34:31,330 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [314851027] [2020-10-14 17:34:31,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:34:31,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:31,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:31,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:31,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:31,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:31,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:32,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:36,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:36,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-14 17:34:36,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 17:34:36,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-14 17:34:36,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:36,355 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:36,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-14 17:34:36,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 17:34:36,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-14 17:34:36,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:37,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:34:37,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:37,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:37,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:37,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:34:37,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:37,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:34:37,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:37,297 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:37,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:34:37,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:37,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:34:37,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:37,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-14 17:34:37,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:37,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:37,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:37,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:34:37,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:37,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:34:37,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:37,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:37,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:34:37,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:37,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:34:37,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:37,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-14 17:34:37,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:37,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:37,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:37,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:34:37,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:37,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:34:37,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:37,306 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:37,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:34:37,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:37,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:34:37,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:37,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-14 17:34:37,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:37,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:37,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:37,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:34:37,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:37,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:34:37,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:37,311 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:37,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 17:34:37,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:37,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 17:34:37,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:37,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-14 17:34:37,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:37,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:37,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:37,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:34:37,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:37,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:34:37,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:37,364 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:37,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:34:37,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:37,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:34:37,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:37,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-14 17:34:37,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:37,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:37,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:37,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:34:37,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:37,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:34:37,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:37,368 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:37,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:34:37,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:37,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:34:37,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:37,387 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 15 proven. 267 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-10-14 17:34:37,388 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [314851027] [2020-10-14 17:34:37,388 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:34:37,388 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-14 17:34:37,388 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967189673] [2020-10-14 17:34:37,388 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-14 17:34:37,388 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:34:37,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-14 17:34:37,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=924, Unknown=0, NotChecked=0, Total=992 [2020-10-14 17:34:37,389 INFO L87 Difference]: Start difference. First operand 121 states and 136 transitions. Second operand 32 states. [2020-10-14 17:34:39,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:34:39,644 INFO L93 Difference]: Finished difference Result 141 states and 159 transitions. [2020-10-14 17:34:39,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-14 17:34:39,644 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 89 [2020-10-14 17:34:39,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:34:39,645 INFO L225 Difference]: With dead ends: 141 [2020-10-14 17:34:39,645 INFO L226 Difference]: Without dead ends: 139 [2020-10-14 17:34:39,646 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 304 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=205, Invalid=2345, Unknown=0, NotChecked=0, Total=2550 [2020-10-14 17:34:39,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-10-14 17:34:39,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 107. [2020-10-14 17:34:39,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-10-14 17:34:39,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 117 transitions. [2020-10-14 17:34:39,668 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 117 transitions. Word has length 89 [2020-10-14 17:34:39,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:34:39,668 INFO L479 AbstractCegarLoop]: Abstraction has 107 states and 117 transitions. [2020-10-14 17:34:39,668 INFO L480 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-14 17:34:39,668 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 117 transitions. [2020-10-14 17:34:39,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-14 17:34:39,669 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:34:39,669 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:34:39,670 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-14 17:34:39,670 INFO L427 AbstractCegarLoop]: === Iteration 43 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:34:39,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:34:39,670 INFO L82 PathProgramCache]: Analyzing trace with hash 885659113, now seen corresponding path program 16 times [2020-10-14 17:34:39,670 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:34:39,671 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1916227504] [2020-10-14 17:34:39,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:34:39,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:39,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:39,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:40,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:40,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-14 17:34:40,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:34:40,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 762 [2020-10-14 17:34:40,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:40,445 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:40,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-14 17:34:40,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 17:34:40,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-14 17:34:40,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:34:40,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:34:40,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:40,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:40,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:40,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:34:40,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:40,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:34:40,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:40,873 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:40,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:34:40,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:40,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:34:40,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:34:40,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-14 17:34:40,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:40,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:40,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:40,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:34:40,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:40,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:34:40,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:40,881 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:40,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:34:40,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:40,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:34:40,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:34:40,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-14 17:34:40,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:40,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:40,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:40,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:34:40,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:40,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:34:40,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:40,889 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:40,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:34:40,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:40,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:34:40,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:34:40,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-14 17:34:40,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:40,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:40,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:40,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:34:40,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:40,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:34:40,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:40,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:40,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:34:40,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:40,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:34:40,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:34:40,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-14 17:34:40,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:40,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:40,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:40,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:34:40,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:40,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:34:40,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:40,904 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:40,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:34:40,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:40,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:34:40,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:34:40,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-14 17:34:40,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:40,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:40,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:40,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:34:40,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:40,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:34:40,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:40,911 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:40,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:34:40,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:40,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:34:40,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:34:40,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-14 17:34:40,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:40,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:40,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:40,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:34:40,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:40,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:34:40,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:40,920 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:40,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:34:40,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:40,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:34:40,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:40,931 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 84 proven. 145 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-10-14 17:34:40,932 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1916227504] [2020-10-14 17:34:40,932 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:34:40,932 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-14 17:34:40,933 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558618248] [2020-10-14 17:34:40,935 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-14 17:34:40,935 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:34:40,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-14 17:34:40,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=305, Unknown=0, NotChecked=0, Total=420 [2020-10-14 17:34:40,937 INFO L87 Difference]: Start difference. First operand 107 states and 117 transitions. Second operand 21 states. [2020-10-14 17:34:41,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:34:41,489 INFO L93 Difference]: Finished difference Result 129 states and 141 transitions. [2020-10-14 17:34:41,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-14 17:34:41,490 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 91 [2020-10-14 17:34:41,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:34:41,492 INFO L225 Difference]: With dead ends: 129 [2020-10-14 17:34:41,492 INFO L226 Difference]: Without dead ends: 89 [2020-10-14 17:34:41,492 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=185, Invalid=571, Unknown=0, NotChecked=0, Total=756 [2020-10-14 17:34:41,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-10-14 17:34:41,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 88. [2020-10-14 17:34:41,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-10-14 17:34:41,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 93 transitions. [2020-10-14 17:34:41,512 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 93 transitions. Word has length 91 [2020-10-14 17:34:41,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:34:41,514 INFO L479 AbstractCegarLoop]: Abstraction has 88 states and 93 transitions. [2020-10-14 17:34:41,514 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-14 17:34:41,514 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 93 transitions. [2020-10-14 17:34:41,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-14 17:34:41,515 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:34:41,515 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:34:41,517 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-14 17:34:41,517 INFO L427 AbstractCegarLoop]: === Iteration 44 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:34:41,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:34:41,517 INFO L82 PathProgramCache]: Analyzing trace with hash -1358883920, now seen corresponding path program 17 times [2020-10-14 17:34:41,517 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:34:41,517 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1712359438] [2020-10-14 17:34:41,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:34:41,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:41,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:41,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:41,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:41,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:41,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:43,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:46,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:46,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:46,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-14 17:34:46,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 17:34:46,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 17:34:46,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:46,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:46,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-14 17:34:46,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 17:34:46,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-14 17:34:46,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:47,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:34:47,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:47,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:47,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:47,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:34:47,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:47,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:34:47,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:47,382 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:47,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:34:47,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:47,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:34:47,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:47,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-14 17:34:47,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:47,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:47,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:47,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:34:47,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:47,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:34:47,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:47,386 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:47,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:34:47,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:47,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:34:47,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:47,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-14 17:34:47,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:47,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:47,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:47,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:34:47,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:47,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:34:47,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:47,392 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:47,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:34:47,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:47,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:34:47,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:47,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-14 17:34:47,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:47,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:47,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:47,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:34:47,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:47,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:34:47,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:47,397 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:47,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:34:47,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:47,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:34:47,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:47,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-14 17:34:47,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:47,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:47,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:47,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:34:47,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:47,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:34:47,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:47,402 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:47,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:34:47,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:47,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:34:47,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:47,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-14 17:34:47,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:47,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:47,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:47,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:34:47,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:47,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 17:34:47,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:47,409 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:47,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 17:34:47,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:47,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 17:34:47,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:47,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-14 17:34:47,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:47,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:47,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:47,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:34:47,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:47,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:34:47,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:47,462 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:47,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:34:47,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:47,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:34:47,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:47,480 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 23 proven. 252 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-10-14 17:34:47,480 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1712359438] [2020-10-14 17:34:47,480 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:34:47,480 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-14 17:34:47,480 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559682571] [2020-10-14 17:34:47,481 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-14 17:34:47,481 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:34:47,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-14 17:34:47,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=811, Unknown=0, NotChecked=0, Total=870 [2020-10-14 17:34:47,481 INFO L87 Difference]: Start difference. First operand 88 states and 93 transitions. Second operand 30 states. [2020-10-14 17:34:49,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:34:49,644 INFO L93 Difference]: Finished difference Result 128 states and 143 transitions. [2020-10-14 17:34:49,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-14 17:34:49,645 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 94 [2020-10-14 17:34:49,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:34:49,646 INFO L225 Difference]: With dead ends: 128 [2020-10-14 17:34:49,646 INFO L226 Difference]: Without dead ends: 126 [2020-10-14 17:34:49,647 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=134, Invalid=1846, Unknown=0, NotChecked=0, Total=1980 [2020-10-14 17:34:49,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-10-14 17:34:49,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 106. [2020-10-14 17:34:49,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-10-14 17:34:49,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 117 transitions. [2020-10-14 17:34:49,663 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 117 transitions. Word has length 94 [2020-10-14 17:34:49,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:34:49,664 INFO L479 AbstractCegarLoop]: Abstraction has 106 states and 117 transitions. [2020-10-14 17:34:49,664 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-14 17:34:49,664 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 117 transitions. [2020-10-14 17:34:49,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-14 17:34:49,664 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:34:49,665 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:34:49,665 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-14 17:34:49,665 INFO L427 AbstractCegarLoop]: === Iteration 45 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:34:49,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:34:49,665 INFO L82 PathProgramCache]: Analyzing trace with hash -194548599, now seen corresponding path program 18 times [2020-10-14 17:34:49,665 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:34:49,665 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1224254319] [2020-10-14 17:34:49,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:34:49,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:49,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:49,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:49,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:50,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:50,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:51,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:51,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:52,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:52,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:52,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:52,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:54,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:54,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-14 17:34:54,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 17:34:54,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 17:34:54,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:54,675 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:54,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-14 17:34:54,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 17:34:54,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-14 17:34:54,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:55,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:34:55,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:55,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:55,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:55,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:34:55,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:55,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:34:55,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:55,662 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:55,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:34:55,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:55,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:34:55,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:55,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-14 17:34:55,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:55,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:55,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:55,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:34:55,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:55,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:34:55,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:55,666 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:55,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:34:55,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:55,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:34:55,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:55,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-14 17:34:55,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:55,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:55,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:55,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:34:55,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:55,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:34:55,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:55,671 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:55,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:34:55,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:55,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:34:55,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:55,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-14 17:34:55,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:55,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:55,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:55,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:34:55,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:55,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:34:55,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:55,676 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:55,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:34:55,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:55,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:34:55,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:55,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-14 17:34:55,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:55,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:55,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:55,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:34:55,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:55,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:34:55,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:55,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:55,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:34:55,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:55,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:34:55,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:55,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-14 17:34:55,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:55,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:55,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:55,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:34:55,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:55,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:34:55,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:55,687 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:55,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 17:34:55,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:55,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 17:34:55,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:55,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-14 17:34:55,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:55,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:55,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:55,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:34:55,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:55,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:34:55,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:55,744 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:55,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:34:55,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:55,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:34:55,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:55,764 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 23 proven. 286 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-10-14 17:34:55,764 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1224254319] [2020-10-14 17:34:55,764 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:34:55,765 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-14 17:34:55,765 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950596986] [2020-10-14 17:34:55,765 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-14 17:34:55,765 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:34:55,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-14 17:34:55,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=927, Unknown=0, NotChecked=0, Total=992 [2020-10-14 17:34:55,765 INFO L87 Difference]: Start difference. First operand 106 states and 117 transitions. Second operand 32 states. [2020-10-14 17:34:59,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:34:59,564 INFO L93 Difference]: Finished difference Result 166 states and 191 transitions. [2020-10-14 17:34:59,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2020-10-14 17:34:59,565 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 97 [2020-10-14 17:34:59,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:34:59,566 INFO L225 Difference]: With dead ends: 166 [2020-10-14 17:34:59,566 INFO L226 Difference]: Without dead ends: 164 [2020-10-14 17:34:59,567 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 819 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=332, Invalid=4498, Unknown=0, NotChecked=0, Total=4830 [2020-10-14 17:34:59,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-10-14 17:34:59,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 109. [2020-10-14 17:34:59,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-10-14 17:34:59,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 122 transitions. [2020-10-14 17:34:59,594 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 122 transitions. Word has length 97 [2020-10-14 17:34:59,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:34:59,594 INFO L479 AbstractCegarLoop]: Abstraction has 109 states and 122 transitions. [2020-10-14 17:34:59,594 INFO L480 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-14 17:34:59,595 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 122 transitions. [2020-10-14 17:34:59,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-14 17:34:59,595 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:34:59,596 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:34:59,596 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-14 17:34:59,596 INFO L427 AbstractCegarLoop]: === Iteration 46 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:34:59,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:34:59,596 INFO L82 PathProgramCache]: Analyzing trace with hash 363116816, now seen corresponding path program 19 times [2020-10-14 17:34:59,596 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:34:59,597 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1348150320] [2020-10-14 17:34:59,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:34:59,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:59,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:59,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:00,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:00,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:00,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:00,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:01,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:02,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:02,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:03,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:04,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:35:04,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-14 17:35:04,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 17:35:04,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-14 17:35:04,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:35:04,618 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:35:04,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-14 17:35:04,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 17:35:04,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-14 17:35:04,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:35:06,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:35:06,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:35:06,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:06,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:35:06,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:35:06,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:35:06,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:35:06,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:35:06,178 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:35:06,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:35:06,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:35:06,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:35:06,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:35:06,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-14 17:35:06,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:35:06,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:06,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:35:06,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:35:06,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:35:06,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:35:06,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:35:06,183 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:35:06,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:35:06,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:35:06,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:35:06,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:35:06,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-14 17:35:06,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:35:06,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:06,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:35:06,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:35:06,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:35:06,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:35:06,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:35:06,188 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:35:06,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:35:06,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:35:06,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:35:06,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:35:06,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-14 17:35:06,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:35:06,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:06,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:35:06,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:35:06,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:35:06,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:35:06,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:35:06,192 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:35:06,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:35:06,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:35:06,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:35:06,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:35:06,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-14 17:35:06,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:35:06,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:06,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:35:06,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:35:06,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:35:06,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:35:06,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:35:06,197 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:35:06,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:35:06,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:35:06,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:35:06,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:35:06,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-14 17:35:06,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:35:06,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:06,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:35:06,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:35:06,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:35:06,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:35:06,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:35:06,202 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:35:06,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 17:35:06,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:35:06,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 17:35:06,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:35:06,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-14 17:35:06,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:35:06,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:06,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:35:06,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:35:06,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:35:06,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:35:06,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:35:06,316 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:35:06,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:35:06,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:35:06,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:35:06,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:35:06,342 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 23 proven. 323 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-10-14 17:35:06,342 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1348150320] [2020-10-14 17:35:06,342 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:35:06,342 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-10-14 17:35:06,342 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456981062] [2020-10-14 17:35:06,343 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-14 17:35:06,343 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:35:06,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-14 17:35:06,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=1001, Unknown=0, NotChecked=0, Total=1122 [2020-10-14 17:35:06,343 INFO L87 Difference]: Start difference. First operand 109 states and 122 transitions. Second operand 34 states. [2020-10-14 17:35:13,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:35:13,857 INFO L93 Difference]: Finished difference Result 203 states and 238 transitions. [2020-10-14 17:35:13,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2020-10-14 17:35:13,858 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 100 [2020-10-14 17:35:13,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:35:13,859 INFO L225 Difference]: With dead ends: 203 [2020-10-14 17:35:13,860 INFO L226 Difference]: Without dead ends: 201 [2020-10-14 17:35:13,861 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1720 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=607, Invalid=7403, Unknown=0, NotChecked=0, Total=8010 [2020-10-14 17:35:13,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2020-10-14 17:35:13,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 112. [2020-10-14 17:35:13,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-10-14 17:35:13,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 127 transitions. [2020-10-14 17:35:13,882 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 127 transitions. Word has length 100 [2020-10-14 17:35:13,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:35:13,883 INFO L479 AbstractCegarLoop]: Abstraction has 112 states and 127 transitions. [2020-10-14 17:35:13,883 INFO L480 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-10-14 17:35:13,883 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 127 transitions. [2020-10-14 17:35:13,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-14 17:35:13,883 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:35:13,883 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 8, 8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:35:13,884 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-10-14 17:35:13,884 INFO L427 AbstractCegarLoop]: === Iteration 47 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:35:13,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:35:13,884 INFO L82 PathProgramCache]: Analyzing trace with hash -1890958233, now seen corresponding path program 20 times [2020-10-14 17:35:13,884 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:35:13,884 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [878560585] [2020-10-14 17:35:13,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:35:13,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:35:13,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:14,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:14,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:35:14,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-14 17:35:14,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:35:14,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 898 [2020-10-14 17:35:14,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:35:14,795 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:35:14,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-14 17:35:14,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 17:35:14,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-14 17:35:14,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:35:15,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:35:15,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:35:15,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:15,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:35:15,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:35:15,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:35:15,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:35:15,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:35:15,154 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:35:15,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:35:15,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:35:15,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:35:15,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:35:15,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-14 17:35:15,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:35:15,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:15,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:35:15,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:35:15,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:35:15,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:35:15,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:35:15,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:35:15,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:35:15,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:35:15,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:35:15,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:35:15,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-14 17:35:15,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:35:15,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:15,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:35:15,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:35:15,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:35:15,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:35:15,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:35:15,162 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:35:15,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:35:15,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:35:15,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:35:15,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:35:15,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-14 17:35:15,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:35:15,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:15,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:35:15,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:35:15,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:35:15,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:35:15,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:35:15,167 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:35:15,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:35:15,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:35:15,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:35:15,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:35:15,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-14 17:35:15,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:35:15,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:15,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:35:15,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:35:15,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:35:15,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:35:15,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:35:15,172 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:35:15,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:35:15,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:35:15,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:35:15,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:35:15,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-14 17:35:15,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:35:15,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:15,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:35:15,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:35:15,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:35:15,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:35:15,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:35:15,175 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:35:15,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:35:15,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:35:15,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:35:15,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:35:15,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-14 17:35:15,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:35:15,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:15,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:35:15,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:35:15,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:35:15,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:35:15,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:35:15,179 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:35:15,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:35:15,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:35:15,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:35:15,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:35:15,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-14 17:35:15,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:35:15,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:15,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:35:15,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:35:15,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:35:15,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:35:15,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:35:15,182 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:35:15,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:35:15,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:35:15,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:35:15,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:35:15,190 INFO L134 CoverageAnalysis]: Checked inductivity of 372 backedges. 112 proven. 176 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-10-14 17:35:15,190 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [878560585] [2020-10-14 17:35:15,190 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:35:15,190 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-14 17:35:15,191 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836080528] [2020-10-14 17:35:15,191 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-14 17:35:15,191 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:35:15,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-14 17:35:15,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=369, Unknown=0, NotChecked=0, Total=506 [2020-10-14 17:35:15,191 INFO L87 Difference]: Start difference. First operand 112 states and 127 transitions. Second operand 23 states. [2020-10-14 17:35:15,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:35:15,870 INFO L93 Difference]: Finished difference Result 152 states and 174 transitions. [2020-10-14 17:35:15,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-14 17:35:15,871 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 102 [2020-10-14 17:35:15,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:35:15,872 INFO L225 Difference]: With dead ends: 152 [2020-10-14 17:35:15,872 INFO L226 Difference]: Without dead ends: 112 [2020-10-14 17:35:15,872 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=225, Invalid=705, Unknown=0, NotChecked=0, Total=930 [2020-10-14 17:35:15,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-10-14 17:35:15,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2020-10-14 17:35:15,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-10-14 17:35:15,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 125 transitions. [2020-10-14 17:35:15,898 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 125 transitions. Word has length 102 [2020-10-14 17:35:15,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:35:15,899 INFO L479 AbstractCegarLoop]: Abstraction has 112 states and 125 transitions. [2020-10-14 17:35:15,899 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-14 17:35:15,899 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 125 transitions. [2020-10-14 17:35:15,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-14 17:35:15,900 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:35:15,900 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:35:15,900 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-10-14 17:35:15,900 INFO L427 AbstractCegarLoop]: === Iteration 48 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:35:15,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:35:15,901 INFO L82 PathProgramCache]: Analyzing trace with hash 839994153, now seen corresponding path program 21 times [2020-10-14 17:35:15,901 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:35:15,901 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1236425391] [2020-10-14 17:35:15,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:35:15,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:35:15,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:16,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:16,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:16,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:16,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:16,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:16,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:18,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:18,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:19,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:19,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:20,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:20,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:35:20,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-14 17:35:20,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-14 17:35:20,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-14 17:35:20,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:35:20,922 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:35:20,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-10-14 17:35:20,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 17:35:20,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-14 17:35:20,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:35:22,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:35:22,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:35:22,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:22,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:35:22,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:35:22,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:35:22,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:35:22,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:35:22,815 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:35:22,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:35:22,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:35:22,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:35:22,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:35:22,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-14 17:35:22,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:35:22,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:22,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:35:22,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:35:22,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:35:22,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:35:22,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:35:22,820 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:35:22,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:35:22,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:35:22,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:35:22,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:35:22,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-14 17:35:22,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:35:22,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:22,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:35:22,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:35:22,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:35:22,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:35:22,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:35:22,825 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:35:22,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:35:22,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:35:22,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:35:22,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:35:22,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-14 17:35:22,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:35:22,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:22,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:35:22,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:35:22,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:35:22,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:35:22,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:35:22,829 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:35:22,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:35:22,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:35:22,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:35:22,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:35:22,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-14 17:35:22,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:35:22,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:22,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:35:22,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:35:22,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:35:22,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:35:22,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:35:22,835 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:35:22,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 17:35:22,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:35:22,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 17:35:22,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:35:22,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-14 17:35:22,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:35:22,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:22,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:35:22,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:35:22,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:35:22,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:35:22,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:35:22,979 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:35:22,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:35:22,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:35:22,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:35:22,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:35:22,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-14 17:35:22,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:35:22,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:22,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:35:22,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:35:22,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:35:22,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:35:22,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:35:22,983 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:35:22,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:35:22,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:35:22,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:35:22,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:35:23,013 INFO L134 CoverageAnalysis]: Checked inductivity of 431 backedges. 20 proven. 366 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-10-14 17:35:23,013 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1236425391] [2020-10-14 17:35:23,013 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:35:23,013 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2020-10-14 17:35:23,013 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652478334] [2020-10-14 17:35:23,014 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-10-14 17:35:23,014 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:35:23,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-10-14 17:35:23,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=1227, Unknown=0, NotChecked=0, Total=1332 [2020-10-14 17:35:23,015 INFO L87 Difference]: Start difference. First operand 112 states and 125 transitions. Second operand 37 states. [2020-10-14 17:35:28,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:35:28,912 INFO L93 Difference]: Finished difference Result 169 states and 194 transitions. [2020-10-14 17:35:28,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-10-14 17:35:28,913 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 103 [2020-10-14 17:35:28,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:35:28,915 INFO L225 Difference]: With dead ends: 169 [2020-10-14 17:35:28,915 INFO L226 Difference]: Without dead ends: 167 [2020-10-14 17:35:28,916 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 551 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=396, Invalid=3636, Unknown=0, NotChecked=0, Total=4032 [2020-10-14 17:35:28,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2020-10-14 17:35:28,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 95. [2020-10-14 17:35:28,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-10-14 17:35:28,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 101 transitions. [2020-10-14 17:35:28,938 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 101 transitions. Word has length 103 [2020-10-14 17:35:28,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:35:28,939 INFO L479 AbstractCegarLoop]: Abstraction has 95 states and 101 transitions. [2020-10-14 17:35:28,939 INFO L480 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-10-14 17:35:28,939 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 101 transitions. [2020-10-14 17:35:28,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-14 17:35:28,939 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:35:28,939 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 8, 8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:35:28,940 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-10-14 17:35:28,940 INFO L427 AbstractCegarLoop]: === Iteration 49 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:35:28,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:35:28,940 INFO L82 PathProgramCache]: Analyzing trace with hash 1121629248, now seen corresponding path program 22 times [2020-10-14 17:35:28,940 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:35:28,940 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1678300948] [2020-10-14 17:35:28,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:35:28,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:35:28,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:29,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:29,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:29,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:29,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:29,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:30,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking...