/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/loops-crafted-1/nested_delay_nd.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 00:05:42,698 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 00:05:42,701 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 00:05:42,743 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 00:05:42,743 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 00:05:42,745 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 00:05:42,746 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 00:05:42,748 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 00:05:42,749 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 00:05:42,750 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 00:05:42,751 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 00:05:42,752 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 00:05:42,752 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 00:05:42,753 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 00:05:42,754 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 00:05:42,755 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 00:05:42,756 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 00:05:42,757 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 00:05:42,759 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 00:05:42,760 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 00:05:42,762 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 00:05:42,763 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 00:05:42,764 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 00:05:42,765 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 00:05:42,767 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 00:05:42,768 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 00:05:42,768 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 00:05:42,769 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 00:05:42,769 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 00:05:42,770 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 00:05:42,770 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 00:05:42,771 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 00:05:42,772 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 00:05:42,772 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 00:05:42,773 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 00:05:42,774 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 00:05:42,774 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 00:05:42,774 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 00:05:42,775 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 00:05:42,775 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 00:05:42,776 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 00:05:42,777 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 [2020-10-15 00:05:42,798 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 00:05:42,798 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 00:05:42,799 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 00:05:42,799 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 00:05:42,799 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 00:05:42,800 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 00:05:42,800 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 00:05:42,800 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 00:05:42,800 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 00:05:42,800 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 00:05:42,801 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 00:05:42,801 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 00:05:42,801 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 00:05:42,801 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 00:05:42,801 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 00:05:42,802 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 00:05:42,802 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 00:05:42,802 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 00:05:42,802 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 00:05:42,802 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 00:05:42,803 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 00:05:42,803 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 00:05:42,803 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 00:05:42,803 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 00:05:42,803 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 00:05:42,803 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 00:05:42,804 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 00:05:42,804 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 00:05:42,804 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 00:05:42,804 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; [2020-10-15 00:05:43,103 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 00:05:43,125 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 00:05:43,128 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 00:05:43,131 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 00:05:43,132 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 00:05:43,132 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/nested_delay_nd.c [2020-10-15 00:05:43,187 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/904ddcfe7/050c0a3411e74e7793dec0c27306db84/FLAG36cc518a3 [2020-10-15 00:05:43,572 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 00:05:43,572 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops-crafted-1/nested_delay_nd.c [2020-10-15 00:05:43,579 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/904ddcfe7/050c0a3411e74e7793dec0c27306db84/FLAG36cc518a3 [2020-10-15 00:05:43,956 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/904ddcfe7/050c0a3411e74e7793dec0c27306db84 [2020-10-15 00:05:43,964 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 00:05:43,966 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 00:05:43,967 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 00:05:43,968 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 00:05:43,971 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 00:05:43,972 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 12:05:43" (1/1) ... [2020-10-15 00:05:43,976 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3169c4eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:05:43, skipping insertion in model container [2020-10-15 00:05:43,976 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 12:05:43" (1/1) ... [2020-10-15 00:05:43,984 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 00:05:44,003 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 00:05:44,184 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 00:05:44,189 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 00:05:44,210 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 00:05:44,226 INFO L208 MainTranslator]: Completed translation [2020-10-15 00:05:44,227 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:05:44 WrapperNode [2020-10-15 00:05:44,227 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 00:05:44,228 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 00:05:44,228 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 00:05:44,228 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 00:05:44,242 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:05:44" (1/1) ... [2020-10-15 00:05:44,243 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:05:44" (1/1) ... [2020-10-15 00:05:44,249 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:05:44" (1/1) ... [2020-10-15 00:05:44,249 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:05:44" (1/1) ... [2020-10-15 00:05:44,343 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:05:44" (1/1) ... [2020-10-15 00:05:44,350 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:05:44" (1/1) ... [2020-10-15 00:05:44,352 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:05:44" (1/1) ... [2020-10-15 00:05:44,353 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 00:05:44,354 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 00:05:44,354 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 00:05:44,354 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 00:05:44,355 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:05:44" (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 [2020-10-15 00:05:44,434 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 00:05:44,434 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 00:05:44,434 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-15 00:05:44,435 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-15 00:05:44,435 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 00:05:44,435 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 00:05:44,435 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-15 00:05:44,435 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-15 00:05:44,435 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-15 00:05:44,436 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-15 00:05:44,436 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 00:05:44,436 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 00:05:44,436 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 00:05:44,784 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 00:05:44,785 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-15 00:05:44,790 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 12:05:44 BoogieIcfgContainer [2020-10-15 00:05:44,791 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 00:05:44,792 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 00:05:44,792 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 00:05:44,797 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 00:05:44,797 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 12:05:43" (1/3) ... [2020-10-15 00:05:44,798 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@94286e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 12:05:44, skipping insertion in model container [2020-10-15 00:05:44,799 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:05:44" (2/3) ... [2020-10-15 00:05:44,800 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@94286e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 12:05:44, skipping insertion in model container [2020-10-15 00:05:44,800 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 12:05:44" (3/3) ... [2020-10-15 00:05:44,802 INFO L109 eAbstractionObserver]: Analyzing ICFG nested_delay_nd.c [2020-10-15 00:05:44,814 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 00:05:44,821 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 00:05:44,835 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-15 00:05:44,859 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 00:05:44,859 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 00:05:44,860 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 00:05:44,860 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 00:05:44,860 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 00:05:44,860 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 00:05:44,860 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 00:05:44,860 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 00:05:44,880 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2020-10-15 00:05:44,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-15 00:05:44,886 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:05:44,887 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:05:44,888 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:05:44,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:05:44,894 INFO L82 PathProgramCache]: Analyzing trace with hash -1722053448, now seen corresponding path program 1 times [2020-10-15 00:05:44,903 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:05:44,904 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1332740383] [2020-10-15 00:05:44,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:05:45,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:05:45,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:45,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:45,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:45,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:45,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:45,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:05:45,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-15 00:05:45,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 00:05:45,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 325 [2020-10-15 00:05:45,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:05:45,349 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:05:45,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:05:45,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-15 00:05:45,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-15 00:05:45,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-15 00:05:45,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:05:45,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:05:45,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:45,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:05:45,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:05:45,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:05:45,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:05:45,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:05:45,428 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:05:45,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:05:45,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:05:45,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:05:45,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:05:45,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:05:45,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:05:45,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:45,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:45,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:05:45,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:05:45,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:05:45,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 00:05:45,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:05:45,443 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:05:45,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:05:45,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:05:45,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:05:45,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:05:45,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:05:45,452 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1332740383] [2020-10-15 00:05:45,454 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:05:45,455 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 00:05:45,456 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729508454] [2020-10-15 00:05:45,461 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 00:05:45,461 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:05:45,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 00:05:45,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 00:05:45,478 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 4 states. [2020-10-15 00:05:45,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:05:45,632 INFO L93 Difference]: Finished difference Result 59 states and 91 transitions. [2020-10-15 00:05:45,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 00:05:45,634 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2020-10-15 00:05:45,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:05:45,644 INFO L225 Difference]: With dead ends: 59 [2020-10-15 00:05:45,644 INFO L226 Difference]: Without dead ends: 36 [2020-10-15 00:05:45,648 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 00:05:45,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-15 00:05:45,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 32. [2020-10-15 00:05:45,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-15 00:05:45,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 40 transitions. [2020-10-15 00:05:45,694 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 40 transitions. Word has length 21 [2020-10-15 00:05:45,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:05:45,694 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 40 transitions. [2020-10-15 00:05:45,694 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 00:05:45,695 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 40 transitions. [2020-10-15 00:05:45,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-15 00:05:45,696 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:05:45,696 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:05:45,696 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 00:05:45,697 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:05:45,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:05:45,697 INFO L82 PathProgramCache]: Analyzing trace with hash 561006405, now seen corresponding path program 1 times [2020-10-15 00:05:45,698 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:05:45,698 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [719424079] [2020-10-15 00:05:45,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:05:45,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:05:45,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:45,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:46,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:05:46,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-15 00:05:46,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:05:46,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 345 [2020-10-15 00:05:46,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:05:46,070 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:05:46,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 00:05:46,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 00:05:46,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-15 00:05:46,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 14 [2020-10-15 00:05:46,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:05:46,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:05:46,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:46,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:05:46,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:05:46,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:05:46,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 00:05:46,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:05:46,123 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:05:46,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:05:46,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:05:46,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 00:05:46,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:05:46,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:05:46,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:05:46,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:46,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:05:46,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:05:46,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:05:46,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 00:05:46,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:05:46,136 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:05:46,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:05:46,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:05:46,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:05:46,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:05:46,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:05:46,142 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [719424079] [2020-10-15 00:05:46,142 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:05:46,142 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 00:05:46,143 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001918806] [2020-10-15 00:05:46,144 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 00:05:46,145 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:05:46,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 00:05:46,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 00:05:46,145 INFO L87 Difference]: Start difference. First operand 32 states and 40 transitions. Second operand 5 states. [2020-10-15 00:05:46,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:05:46,265 INFO L93 Difference]: Finished difference Result 57 states and 75 transitions. [2020-10-15 00:05:46,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 00:05:46,266 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2020-10-15 00:05:46,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:05:46,267 INFO L225 Difference]: With dead ends: 57 [2020-10-15 00:05:46,268 INFO L226 Difference]: Without dead ends: 37 [2020-10-15 00:05:46,269 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-15 00:05:46,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-10-15 00:05:46,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 33. [2020-10-15 00:05:46,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-15 00:05:46,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 41 transitions. [2020-10-15 00:05:46,278 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 41 transitions. Word has length 22 [2020-10-15 00:05:46,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:05:46,278 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 41 transitions. [2020-10-15 00:05:46,278 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 00:05:46,279 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 41 transitions. [2020-10-15 00:05:46,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-15 00:05:46,280 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:05:46,280 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:05:46,280 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 00:05:46,280 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:05:46,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:05:46,281 INFO L82 PathProgramCache]: Analyzing trace with hash 1709050809, now seen corresponding path program 1 times [2020-10-15 00:05:46,281 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:05:46,281 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1797938727] [2020-10-15 00:05:46,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:05:46,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:05:46,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:46,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:46,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:46,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:46,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:46,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:46,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:46,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:47,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:05:47,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-15 00:05:47,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 00:05:47,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 730 [2020-10-15 00:05:47,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:05:47,023 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:05:47,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 00:05:47,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 00:05:47,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-15 00:05:47,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:05:47,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:05:47,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:05:47,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:47,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:05:47,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:05:47,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:05:47,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 00:05:47,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:05:47,073 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:05:47,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:05:47,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:05:47,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 00:05:47,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:05:47,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:05:47,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:05:47,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:47,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:05:47,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:05:47,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:05:47,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:05:47,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:05:47,084 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:05:47,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:05:47,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:05:47,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:05:47,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:05:47,088 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:05:47,089 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1797938727] [2020-10-15 00:05:47,089 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:05:47,089 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-15 00:05:47,090 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928978051] [2020-10-15 00:05:47,090 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 00:05:47,090 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:05:47,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 00:05:47,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-15 00:05:47,091 INFO L87 Difference]: Start difference. First operand 33 states and 41 transitions. Second operand 6 states. [2020-10-15 00:05:47,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:05:47,259 INFO L93 Difference]: Finished difference Result 64 states and 85 transitions. [2020-10-15 00:05:47,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 00:05:47,260 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2020-10-15 00:05:47,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:05:47,261 INFO L225 Difference]: With dead ends: 64 [2020-10-15 00:05:47,261 INFO L226 Difference]: Without dead ends: 43 [2020-10-15 00:05:47,262 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-15 00:05:47,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-10-15 00:05:47,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 38. [2020-10-15 00:05:47,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-15 00:05:47,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 47 transitions. [2020-10-15 00:05:47,271 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 47 transitions. Word has length 24 [2020-10-15 00:05:47,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:05:47,271 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 47 transitions. [2020-10-15 00:05:47,271 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 00:05:47,272 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 47 transitions. [2020-10-15 00:05:47,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-15 00:05:47,273 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:05:47,273 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:05:47,273 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 00:05:47,273 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:05:47,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:05:47,274 INFO L82 PathProgramCache]: Analyzing trace with hash 243766181, now seen corresponding path program 2 times [2020-10-15 00:05:47,274 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:05:47,274 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [38345920] [2020-10-15 00:05:47,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:05:47,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:05:47,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:47,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:47,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:47,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:47,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:47,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:47,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:47,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:47,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:47,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:47,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:48,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:48,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:48,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:49,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:05:49,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-15 00:05:49,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-15 00:05:49,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2567 [2020-10-15 00:05:49,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:05:49,851 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:05:49,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 00:05:49,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 00:05:49,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-15 00:05:49,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:05:49,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:05:49,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:05:49,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:49,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:05:49,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:05:49,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:05:49,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:05:49,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:05:49,903 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:05:49,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:05:49,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:05:49,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 00:05:49,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:05:49,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:05:49,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:05:49,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:49,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:05:49,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:05:49,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:05:49,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:05:49,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:05:49,913 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:05:49,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:05:49,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:05:49,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:05:49,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:05:49,917 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:05:49,917 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [38345920] [2020-10-15 00:05:49,918 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:05:49,918 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-15 00:05:49,918 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728939887] [2020-10-15 00:05:49,919 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 00:05:49,919 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:05:49,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 00:05:49,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-15 00:05:49,920 INFO L87 Difference]: Start difference. First operand 38 states and 47 transitions. Second operand 7 states. [2020-10-15 00:05:50,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:05:50,095 INFO L93 Difference]: Finished difference Result 75 states and 99 transitions. [2020-10-15 00:05:50,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-15 00:05:50,096 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2020-10-15 00:05:50,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:05:50,097 INFO L225 Difference]: With dead ends: 75 [2020-10-15 00:05:50,097 INFO L226 Difference]: Without dead ends: 49 [2020-10-15 00:05:50,098 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-15 00:05:50,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-10-15 00:05:50,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 44. [2020-10-15 00:05:50,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-15 00:05:50,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 55 transitions. [2020-10-15 00:05:50,106 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 55 transitions. Word has length 27 [2020-10-15 00:05:50,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:05:50,106 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 55 transitions. [2020-10-15 00:05:50,106 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 00:05:50,107 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 55 transitions. [2020-10-15 00:05:50,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-15 00:05:50,108 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:05:50,108 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:05:50,108 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 00:05:50,108 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:05:50,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:05:50,109 INFO L82 PathProgramCache]: Analyzing trace with hash 1997009977, now seen corresponding path program 3 times [2020-10-15 00:05:50,109 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:05:50,109 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [232745022] [2020-10-15 00:05:50,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:05:50,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:05:50,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:50,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:50,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:50,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:50,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:50,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:50,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:50,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:50,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:50,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:50,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:50,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:50,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:50,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:50,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:50,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:50,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:51,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:51,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:51,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:51,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:51,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:51,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:55,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:05:55,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-15 00:05:55,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 23 [2020-10-15 00:05:55,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-15 00:05:55,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:05:55,121 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:05:55,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 00:05:55,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 00:05:55,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-15 00:05:55,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:05:55,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:05:55,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:05:55,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:55,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:05:55,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:05:55,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:05:55,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:05:55,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:05:55,181 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:05:55,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:05:55,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:05:55,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 00:05:55,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:05:55,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:05:55,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:05:55,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:55,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:05:55,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:05:55,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:05:55,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 00:05:55,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:05:55,194 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:05:55,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:05:55,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:05:55,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:05:55,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:05:55,199 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-15 00:05:55,200 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [232745022] [2020-10-15 00:05:55,200 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:05:55,200 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-15 00:05:55,200 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342993626] [2020-10-15 00:05:55,201 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 00:05:55,201 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:05:55,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 00:05:55,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-15 00:05:55,202 INFO L87 Difference]: Start difference. First operand 44 states and 55 transitions. Second operand 7 states. [2020-10-15 00:05:55,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:05:55,478 INFO L93 Difference]: Finished difference Result 108 states and 140 transitions. [2020-10-15 00:05:55,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-15 00:05:55,479 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 30 [2020-10-15 00:05:55,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:05:55,480 INFO L225 Difference]: With dead ends: 108 [2020-10-15 00:05:55,480 INFO L226 Difference]: Without dead ends: 76 [2020-10-15 00:05:55,481 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2020-10-15 00:05:55,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-15 00:05:55,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 61. [2020-10-15 00:05:55,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-15 00:05:55,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 78 transitions. [2020-10-15 00:05:55,491 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 78 transitions. Word has length 30 [2020-10-15 00:05:55,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:05:55,492 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 78 transitions. [2020-10-15 00:05:55,492 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 00:05:55,492 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 78 transitions. [2020-10-15 00:05:55,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-15 00:05:55,493 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:05:55,493 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:05:55,493 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 00:05:55,494 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:05:55,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:05:55,494 INFO L82 PathProgramCache]: Analyzing trace with hash 975941623, now seen corresponding path program 1 times [2020-10-15 00:05:55,494 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:05:55,495 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1123780266] [2020-10-15 00:05:55,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:05:55,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:05:55,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:55,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:55,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:55,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:55,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:55,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:55,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:55,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:55,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:55,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:55,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:55,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:55,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:56,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:05:56,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-15 00:05:56,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-15 00:05:56,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 663 [2020-10-15 00:05:56,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:05:56,167 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:05:56,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 00:05:56,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 00:05:56,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-15 00:05:56,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:05:56,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:05:56,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:05:56,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:56,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:05:56,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:05:56,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:05:56,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:05:56,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:05:56,249 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:05:56,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:05:56,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:05:56,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 00:05:56,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:05:56,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:05:56,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:05:56,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:56,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:05:56,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:05:56,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:05:56,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:05:56,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:05:56,259 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:05:56,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:05:56,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:05:56,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:05:56,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:05:56,264 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 00:05:56,265 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1123780266] [2020-10-15 00:05:56,265 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:05:56,265 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-15 00:05:56,265 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631481933] [2020-10-15 00:05:56,266 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 00:05:56,266 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:05:56,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 00:05:56,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-15 00:05:56,267 INFO L87 Difference]: Start difference. First operand 61 states and 78 transitions. Second operand 8 states. [2020-10-15 00:05:56,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:05:56,724 INFO L93 Difference]: Finished difference Result 153 states and 205 transitions. [2020-10-15 00:05:56,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-15 00:05:56,724 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 30 [2020-10-15 00:05:56,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:05:56,726 INFO L225 Difference]: With dead ends: 153 [2020-10-15 00:05:56,726 INFO L226 Difference]: Without dead ends: 104 [2020-10-15 00:05:56,727 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=100, Invalid=280, Unknown=0, NotChecked=0, Total=380 [2020-10-15 00:05:56,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-15 00:05:56,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 79. [2020-10-15 00:05:56,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-15 00:05:56,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 104 transitions. [2020-10-15 00:05:56,739 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 104 transitions. Word has length 30 [2020-10-15 00:05:56,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:05:56,739 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 104 transitions. [2020-10-15 00:05:56,740 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 00:05:56,740 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 104 transitions. [2020-10-15 00:05:56,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-15 00:05:56,741 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:05:56,741 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:05:56,741 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 00:05:56,742 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:05:56,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:05:56,742 INFO L82 PathProgramCache]: Analyzing trace with hash -2130824325, now seen corresponding path program 1 times [2020-10-15 00:05:56,742 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:05:56,743 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1108095804] [2020-10-15 00:05:56,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:05:56,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:05:56,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:56,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:56,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:56,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:56,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:57,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:05:57,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-15 00:05:57,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 00:05:57,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 315 [2020-10-15 00:05:57,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:05:57,066 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:05:57,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 00:05:57,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 00:05:57,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-15 00:05:57,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:05:57,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:05:57,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:05:57,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:57,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:05:57,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:05:57,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:05:57,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:05:57,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:05:57,132 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:05:57,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:05:57,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:05:57,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 00:05:57,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:05:57,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:05:57,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:05:57,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:57,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:05:57,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:05:57,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:05:57,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:05:57,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:05:57,140 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:05:57,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:05:57,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:05:57,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:05:57,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:05:57,144 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:05:57,144 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1108095804] [2020-10-15 00:05:57,144 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:05:57,145 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-15 00:05:57,146 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910357544] [2020-10-15 00:05:57,146 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 00:05:57,147 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:05:57,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 00:05:57,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-15 00:05:57,147 INFO L87 Difference]: Start difference. First operand 79 states and 104 transitions. Second operand 8 states. [2020-10-15 00:05:57,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:05:57,382 INFO L93 Difference]: Finished difference Result 176 states and 237 transitions. [2020-10-15 00:05:57,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-15 00:05:57,383 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 30 [2020-10-15 00:05:57,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:05:57,385 INFO L225 Difference]: With dead ends: 176 [2020-10-15 00:05:57,386 INFO L226 Difference]: Without dead ends: 109 [2020-10-15 00:05:57,389 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-15 00:05:57,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-10-15 00:05:57,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 90. [2020-10-15 00:05:57,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-10-15 00:05:57,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 118 transitions. [2020-10-15 00:05:57,401 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 118 transitions. Word has length 30 [2020-10-15 00:05:57,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:05:57,402 INFO L479 AbstractCegarLoop]: Abstraction has 90 states and 118 transitions. [2020-10-15 00:05:57,402 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 00:05:57,402 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 118 transitions. [2020-10-15 00:05:57,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-15 00:05:57,404 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:05:57,404 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:05:57,404 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 00:05:57,404 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:05:57,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:05:57,405 INFO L82 PathProgramCache]: Analyzing trace with hash 850645223, now seen corresponding path program 2 times [2020-10-15 00:05:57,405 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:05:57,405 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [562179834] [2020-10-15 00:05:57,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:05:57,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:05:57,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:57,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:57,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:57,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:57,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:57,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:57,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:57,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:58,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:05:58,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-15 00:05:58,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 00:05:58,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 685 [2020-10-15 00:05:58,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:05:58,099 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:05:58,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 00:05:58,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 00:05:58,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-15 00:05:58,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:05:58,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:05:58,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:05:58,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:58,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:05:58,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:05:58,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:05:58,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:05:58,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:05:58,185 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:05:58,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:05:58,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:05:58,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 00:05:58,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:05:58,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:05:58,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:05:58,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:58,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:05:58,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:05:58,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:05:58,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:05:58,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:05:58,195 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:05:58,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:05:58,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:05:58,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:05:58,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:05:58,200 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:05:58,201 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [562179834] [2020-10-15 00:05:58,201 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:05:58,201 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-15 00:05:58,202 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902615197] [2020-10-15 00:05:58,202 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 00:05:58,203 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:05:58,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 00:05:58,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-15 00:05:58,204 INFO L87 Difference]: Start difference. First operand 90 states and 118 transitions. Second operand 9 states. [2020-10-15 00:05:58,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:05:58,457 INFO L93 Difference]: Finished difference Result 199 states and 267 transitions. [2020-10-15 00:05:58,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-15 00:05:58,458 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 33 [2020-10-15 00:05:58,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:05:58,459 INFO L225 Difference]: With dead ends: 199 [2020-10-15 00:05:58,459 INFO L226 Difference]: Without dead ends: 121 [2020-10-15 00:05:58,460 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2020-10-15 00:05:58,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-10-15 00:05:58,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 102. [2020-10-15 00:05:58,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-10-15 00:05:58,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 134 transitions. [2020-10-15 00:05:58,471 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 134 transitions. Word has length 33 [2020-10-15 00:05:58,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:05:58,471 INFO L479 AbstractCegarLoop]: Abstraction has 102 states and 134 transitions. [2020-10-15 00:05:58,471 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 00:05:58,471 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 134 transitions. [2020-10-15 00:05:58,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-15 00:05:58,472 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:05:58,473 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:05:58,473 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 00:05:58,473 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:05:58,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:05:58,473 INFO L82 PathProgramCache]: Analyzing trace with hash 1886268411, now seen corresponding path program 3 times [2020-10-15 00:05:58,474 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:05:58,474 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1354151318] [2020-10-15 00:05:58,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:05:58,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:05:58,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:58,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:58,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:58,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:58,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:58,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:58,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:58,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:58,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:58,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:58,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:58,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:58,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:00,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:00,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-15 00:06:00,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-15 00:06:00,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1753 [2020-10-15 00:06:00,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:00,236 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:00,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 00:06:00,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 00:06:00,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-15 00:06:00,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:06:00,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:06:00,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:00,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:00,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:00,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:06:00,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:06:00,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:06:00,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:00,313 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:00,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:06:00,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:06:00,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 00:06:00,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:06:00,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:06:00,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:00,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:00,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:00,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:06:00,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:06:00,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:06:00,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:00,320 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:00,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:06:00,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:06:00,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:06:00,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:06:00,325 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-15 00:06:00,330 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1354151318] [2020-10-15 00:06:00,331 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:06:00,331 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-15 00:06:00,331 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259202096] [2020-10-15 00:06:00,331 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 00:06:00,332 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:06:00,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 00:06:00,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-15 00:06:00,332 INFO L87 Difference]: Start difference. First operand 102 states and 134 transitions. Second operand 9 states. [2020-10-15 00:06:00,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:06:00,763 INFO L93 Difference]: Finished difference Result 259 states and 344 transitions. [2020-10-15 00:06:00,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-15 00:06:00,764 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 36 [2020-10-15 00:06:00,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:06:00,765 INFO L225 Difference]: With dead ends: 259 [2020-10-15 00:06:00,766 INFO L226 Difference]: Without dead ends: 169 [2020-10-15 00:06:00,767 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=159, Invalid=441, Unknown=0, NotChecked=0, Total=600 [2020-10-15 00:06:00,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2020-10-15 00:06:00,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 99. [2020-10-15 00:06:00,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-15 00:06:00,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 130 transitions. [2020-10-15 00:06:00,796 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 130 transitions. Word has length 36 [2020-10-15 00:06:00,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:06:00,797 INFO L479 AbstractCegarLoop]: Abstraction has 99 states and 130 transitions. [2020-10-15 00:06:00,797 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 00:06:00,799 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 130 transitions. [2020-10-15 00:06:00,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-15 00:06:00,800 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:06:00,800 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:06:00,800 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 00:06:00,801 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:06:00,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:06:00,801 INFO L82 PathProgramCache]: Analyzing trace with hash 865200057, now seen corresponding path program 4 times [2020-10-15 00:06:00,801 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:06:00,802 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1490779677] [2020-10-15 00:06:00,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:06:00,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:00,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:00,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:00,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:00,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:00,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:00,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:00,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:00,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:01,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:01,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-15 00:06:01,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 00:06:01,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 552 [2020-10-15 00:06:01,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:01,369 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:01,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 00:06:01,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 00:06:01,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-15 00:06:01,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:06:01,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:06:01,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:01,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:01,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:01,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:06:01,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:06:01,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:06:01,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:01,451 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:01,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:06:01,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:06:01,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 00:06:01,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:06:01,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:06:01,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:01,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:01,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:01,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:06:01,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:06:01,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:06:01,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:01,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:01,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:06:01,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:06:01,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:06:01,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:06:01,474 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:06:01,474 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1490779677] [2020-10-15 00:06:01,474 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:06:01,475 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-15 00:06:01,475 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999502561] [2020-10-15 00:06:01,477 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-15 00:06:01,477 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:06:01,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-15 00:06:01,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-15 00:06:01,478 INFO L87 Difference]: Start difference. First operand 99 states and 130 transitions. Second operand 10 states. [2020-10-15 00:06:01,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:06:01,738 INFO L93 Difference]: Finished difference Result 217 states and 291 transitions. [2020-10-15 00:06:01,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-15 00:06:01,739 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 36 [2020-10-15 00:06:01,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:06:01,740 INFO L225 Difference]: With dead ends: 217 [2020-10-15 00:06:01,740 INFO L226 Difference]: Without dead ends: 130 [2020-10-15 00:06:01,741 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=90, Invalid=182, Unknown=0, NotChecked=0, Total=272 [2020-10-15 00:06:01,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-10-15 00:06:01,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 111. [2020-10-15 00:06:01,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-10-15 00:06:01,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 146 transitions. [2020-10-15 00:06:01,754 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 146 transitions. Word has length 36 [2020-10-15 00:06:01,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:06:01,755 INFO L479 AbstractCegarLoop]: Abstraction has 111 states and 146 transitions. [2020-10-15 00:06:01,755 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-15 00:06:01,755 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 146 transitions. [2020-10-15 00:06:01,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-15 00:06:01,756 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:06:01,757 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:06:01,757 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-15 00:06:01,757 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:06:01,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:06:01,757 INFO L82 PathProgramCache]: Analyzing trace with hash 1697631209, now seen corresponding path program 5 times [2020-10-15 00:06:01,758 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:06:01,758 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [761420310] [2020-10-15 00:06:01,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:06:01,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:01,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:01,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:01,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:01,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:01,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:01,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:01,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:01,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:01,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:01,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:01,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:02,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:02,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:03,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:03,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-15 00:06:03,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-15 00:06:03,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1628 [2020-10-15 00:06:03,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:03,400 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:03,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 00:06:03,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 00:06:03,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-15 00:06:03,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:06:03,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:06:03,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:03,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:03,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:03,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:06:03,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:06:03,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:06:03,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:03,472 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:03,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:06:03,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:06:03,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 00:06:03,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:06:03,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:06:03,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:03,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:03,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:03,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:06:03,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:06:03,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:06:03,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:03,479 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:03,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:06:03,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:06:03,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:06:03,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:06:03,483 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-15 00:06:03,484 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [761420310] [2020-10-15 00:06:03,484 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:06:03,484 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-15 00:06:03,484 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001819895] [2020-10-15 00:06:03,485 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-15 00:06:03,485 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:06:03,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-15 00:06:03,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-15 00:06:03,486 INFO L87 Difference]: Start difference. First operand 111 states and 146 transitions. Second operand 10 states. [2020-10-15 00:06:03,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:06:03,852 INFO L93 Difference]: Finished difference Result 270 states and 359 transitions. [2020-10-15 00:06:03,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-15 00:06:03,852 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 39 [2020-10-15 00:06:03,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:06:03,854 INFO L225 Difference]: With dead ends: 270 [2020-10-15 00:06:03,855 INFO L226 Difference]: Without dead ends: 171 [2020-10-15 00:06:03,856 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=118, Invalid=344, Unknown=0, NotChecked=0, Total=462 [2020-10-15 00:06:03,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-10-15 00:06:03,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 79. [2020-10-15 00:06:03,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-15 00:06:03,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 102 transitions. [2020-10-15 00:06:03,864 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 102 transitions. Word has length 39 [2020-10-15 00:06:03,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:06:03,864 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 102 transitions. [2020-10-15 00:06:03,864 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-15 00:06:03,864 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 102 transitions. [2020-10-15 00:06:03,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-15 00:06:03,867 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:06:03,867 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:06:03,867 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-15 00:06:03,867 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:06:03,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:06:03,868 INFO L82 PathProgramCache]: Analyzing trace with hash 676562855, now seen corresponding path program 6 times [2020-10-15 00:06:03,868 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:06:03,868 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [83520352] [2020-10-15 00:06:03,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:06:03,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:03,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:03,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:03,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:03,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:03,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:03,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:03,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:04,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:04,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:04,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-15 00:06:04,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 00:06:04,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 548 [2020-10-15 00:06:04,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:04,427 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:04,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-15 00:06:04,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 00:06:04,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-15 00:06:04,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:06:04,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:06:04,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:04,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:04,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:04,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:06:04,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:06:04,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:06:04,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:04,510 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:04,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:06:04,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:06:04,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 00:06:04,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:06:04,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:06:04,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:04,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:04,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:04,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:06:04,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:06:04,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:06:04,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:04,518 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:04,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:06:04,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:06:04,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:06:04,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:06:04,524 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:06:04,524 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [83520352] [2020-10-15 00:06:04,525 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:06:04,525 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-15 00:06:04,525 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530445558] [2020-10-15 00:06:04,526 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-15 00:06:04,526 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:06:04,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-15 00:06:04,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-10-15 00:06:04,527 INFO L87 Difference]: Start difference. First operand 79 states and 102 transitions. Second operand 11 states. [2020-10-15 00:06:04,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:06:04,810 INFO L93 Difference]: Finished difference Result 167 states and 222 transitions. [2020-10-15 00:06:04,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-15 00:06:04,811 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 39 [2020-10-15 00:06:04,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:06:04,813 INFO L225 Difference]: With dead ends: 167 [2020-10-15 00:06:04,813 INFO L226 Difference]: Without dead ends: 100 [2020-10-15 00:06:04,814 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=114, Invalid=228, Unknown=0, NotChecked=0, Total=342 [2020-10-15 00:06:04,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-10-15 00:06:04,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 88. [2020-10-15 00:06:04,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-10-15 00:06:04,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 114 transitions. [2020-10-15 00:06:04,823 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 114 transitions. Word has length 39 [2020-10-15 00:06:04,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:06:04,824 INFO L479 AbstractCegarLoop]: Abstraction has 88 states and 114 transitions. [2020-10-15 00:06:04,824 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-15 00:06:04,824 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 114 transitions. [2020-10-15 00:06:04,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-15 00:06:04,825 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:06:04,825 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:06:04,825 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-15 00:06:04,826 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:06:04,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:06:04,826 INFO L82 PathProgramCache]: Analyzing trace with hash -176030405, now seen corresponding path program 7 times [2020-10-15 00:06:04,826 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:06:04,827 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [275541402] [2020-10-15 00:06:04,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:06:04,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:04,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:04,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:04,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:04,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:04,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:04,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:04,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:04,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:05,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:05,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:05,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:05,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:05,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:06,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:06,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-15 00:06:06,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-15 00:06:06,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1535 [2020-10-15 00:06:06,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:06,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:06,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-15 00:06:06,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 00:06:06,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-15 00:06:06,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:06:06,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:06:06,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:06,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:06,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:06,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:06:06,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:06:06,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:06:06,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:06,446 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:06,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:06:06,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:06:06,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 00:06:06,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:06:06,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:06:06,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:06,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:06,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:06,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:06:06,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:06:06,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:06:06,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:06,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:06,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:06:06,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:06:06,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:06:06,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:06:06,458 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-15 00:06:06,458 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [275541402] [2020-10-15 00:06:06,458 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:06:06,458 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-15 00:06:06,459 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685414813] [2020-10-15 00:06:06,459 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-15 00:06:06,459 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:06:06,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-15 00:06:06,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-10-15 00:06:06,460 INFO L87 Difference]: Start difference. First operand 88 states and 114 transitions. Second operand 11 states. [2020-10-15 00:06:07,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:06:07,021 INFO L93 Difference]: Finished difference Result 219 states and 289 transitions. [2020-10-15 00:06:07,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-15 00:06:07,022 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 42 [2020-10-15 00:06:07,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:06:07,023 INFO L225 Difference]: With dead ends: 219 [2020-10-15 00:06:07,024 INFO L226 Difference]: Without dead ends: 143 [2020-10-15 00:06:07,025 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=155, Invalid=445, Unknown=0, NotChecked=0, Total=600 [2020-10-15 00:06:07,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2020-10-15 00:06:07,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 85. [2020-10-15 00:06:07,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-15 00:06:07,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 110 transitions. [2020-10-15 00:06:07,037 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 110 transitions. Word has length 42 [2020-10-15 00:06:07,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:06:07,037 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 110 transitions. [2020-10-15 00:06:07,037 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-15 00:06:07,037 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 110 transitions. [2020-10-15 00:06:07,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-15 00:06:07,038 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:06:07,038 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:06:07,039 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-15 00:06:07,039 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:06:07,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:06:07,039 INFO L82 PathProgramCache]: Analyzing trace with hash -1197098759, now seen corresponding path program 8 times [2020-10-15 00:06:07,040 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:06:07,040 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1875407346] [2020-10-15 00:06:07,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:06:07,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:07,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:07,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:07,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:07,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:07,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:07,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:07,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:07,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:07,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:07,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-15 00:06:07,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 00:06:07,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 773 [2020-10-15 00:06:07,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:07,824 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:07,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-15 00:06:07,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 00:06:07,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-15 00:06:07,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:06:07,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:06:07,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:07,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:07,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:07,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:06:07,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:06:07,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:06:07,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:07,947 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:07,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:06:07,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:06:07,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 00:06:07,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:06:07,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:06:07,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:07,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:07,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:07,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:06:07,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:06:07,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:06:07,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:07,956 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:07,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:06:07,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:06:07,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:06:07,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:06:07,963 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 68 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 00:06:07,963 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1875407346] [2020-10-15 00:06:07,964 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:06:07,964 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-15 00:06:07,964 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771176921] [2020-10-15 00:06:07,964 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-15 00:06:07,965 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:06:07,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-15 00:06:07,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2020-10-15 00:06:07,965 INFO L87 Difference]: Start difference. First operand 85 states and 110 transitions. Second operand 12 states. [2020-10-15 00:06:08,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:06:08,652 INFO L93 Difference]: Finished difference Result 204 states and 271 transitions. [2020-10-15 00:06:08,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-15 00:06:08,653 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 42 [2020-10-15 00:06:08,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:06:08,655 INFO L225 Difference]: With dead ends: 204 [2020-10-15 00:06:08,655 INFO L226 Difference]: Without dead ends: 131 [2020-10-15 00:06:08,656 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=198, Invalid=558, Unknown=0, NotChecked=0, Total=756 [2020-10-15 00:06:08,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-10-15 00:06:08,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 83. [2020-10-15 00:06:08,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-15 00:06:08,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 108 transitions. [2020-10-15 00:06:08,669 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 108 transitions. Word has length 42 [2020-10-15 00:06:08,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:06:08,669 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 108 transitions. [2020-10-15 00:06:08,670 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-15 00:06:08,670 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 108 transitions. [2020-10-15 00:06:08,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-15 00:06:08,671 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:06:08,671 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:06:08,671 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-15 00:06:08,671 INFO L427 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:06:08,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:06:08,672 INFO L82 PathProgramCache]: Analyzing trace with hash -1783904773, now seen corresponding path program 9 times [2020-10-15 00:06:08,672 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:06:08,673 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [25876683] [2020-10-15 00:06:08,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:06:08,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:08,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:08,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:08,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:08,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:08,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:09,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:09,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-15 00:06:09,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 00:06:09,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 501 [2020-10-15 00:06:09,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:09,185 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:09,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-15 00:06:09,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 00:06:09,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-15 00:06:09,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:06:09,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:06:09,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:09,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:09,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:09,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:06:09,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:06:09,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:06:09,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:09,314 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:09,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:06:09,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:06:09,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 00:06:09,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:06:09,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:06:09,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:09,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:09,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:09,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:06:09,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:06:09,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:06:09,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:09,321 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:09,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:06:09,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:06:09,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:06:09,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:06:09,325 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:06:09,326 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [25876683] [2020-10-15 00:06:09,326 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:06:09,326 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-15 00:06:09,327 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292585754] [2020-10-15 00:06:09,327 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-15 00:06:09,328 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:06:09,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-15 00:06:09,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2020-10-15 00:06:09,329 INFO L87 Difference]: Start difference. First operand 83 states and 108 transitions. Second operand 12 states. [2020-10-15 00:06:09,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:06:09,759 INFO L93 Difference]: Finished difference Result 174 states and 232 transitions. [2020-10-15 00:06:09,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 00:06:09,760 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 42 [2020-10-15 00:06:09,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:06:09,761 INFO L225 Difference]: With dead ends: 174 [2020-10-15 00:06:09,761 INFO L226 Difference]: Without dead ends: 103 [2020-10-15 00:06:09,762 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=141, Invalid=279, Unknown=0, NotChecked=0, Total=420 [2020-10-15 00:06:09,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-10-15 00:06:09,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 91. [2020-10-15 00:06:09,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-15 00:06:09,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 118 transitions. [2020-10-15 00:06:09,771 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 118 transitions. Word has length 42 [2020-10-15 00:06:09,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:06:09,771 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 118 transitions. [2020-10-15 00:06:09,772 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-15 00:06:09,772 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 118 transitions. [2020-10-15 00:06:09,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-15 00:06:09,772 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:06:09,773 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:06:09,773 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-15 00:06:09,773 INFO L427 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:06:09,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:06:09,773 INFO L82 PathProgramCache]: Analyzing trace with hash -2055262617, now seen corresponding path program 10 times [2020-10-15 00:06:09,774 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:06:09,774 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [759181663] [2020-10-15 00:06:09,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:06:09,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:09,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:09,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:09,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:09,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:09,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:09,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:09,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:09,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:10,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:10,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-15 00:06:10,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 00:06:10,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 427 [2020-10-15 00:06:10,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:10,211 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:10,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-15 00:06:10,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 00:06:10,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-15 00:06:10,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:06:10,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:06:10,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:10,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:10,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:10,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:06:10,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:06:10,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:06:10,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:10,333 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:10,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:06:10,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:06:10,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 00:06:10,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:06:10,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:06:10,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:10,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:10,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:10,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:06:10,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:06:10,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:06:10,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:10,342 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:10,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:06:10,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:06:10,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:06:10,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:06:10,350 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 00:06:10,351 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [759181663] [2020-10-15 00:06:10,351 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:06:10,351 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-15 00:06:10,351 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037513201] [2020-10-15 00:06:10,352 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-15 00:06:10,352 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:06:10,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-15 00:06:10,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-10-15 00:06:10,352 INFO L87 Difference]: Start difference. First operand 91 states and 118 transitions. Second operand 13 states. [2020-10-15 00:06:10,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:06:10,896 INFO L93 Difference]: Finished difference Result 219 states and 291 transitions. [2020-10-15 00:06:10,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-15 00:06:10,897 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 45 [2020-10-15 00:06:10,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:06:10,898 INFO L225 Difference]: With dead ends: 219 [2020-10-15 00:06:10,898 INFO L226 Difference]: Without dead ends: 140 [2020-10-15 00:06:10,899 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=247, Invalid=683, Unknown=0, NotChecked=0, Total=930 [2020-10-15 00:06:10,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-10-15 00:06:10,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 89. [2020-10-15 00:06:10,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-10-15 00:06:10,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 116 transitions. [2020-10-15 00:06:10,910 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 116 transitions. Word has length 45 [2020-10-15 00:06:10,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:06:10,910 INFO L479 AbstractCegarLoop]: Abstraction has 89 states and 116 transitions. [2020-10-15 00:06:10,910 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-15 00:06:10,911 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 116 transitions. [2020-10-15 00:06:10,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-15 00:06:10,911 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:06:10,911 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:06:10,911 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-15 00:06:10,912 INFO L427 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:06:10,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:06:10,912 INFO L82 PathProgramCache]: Analyzing trace with hash 1652898665, now seen corresponding path program 11 times [2020-10-15 00:06:10,912 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:06:10,912 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1215877363] [2020-10-15 00:06:10,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:06:10,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:10,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:10,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:10,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:11,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:11,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:11,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:11,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-15 00:06:11,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 00:06:11,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 375 [2020-10-15 00:06:11,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:11,296 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:11,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-15 00:06:11,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 00:06:11,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-15 00:06:11,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:06:11,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:06:11,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:11,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:11,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:11,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:06:11,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:06:11,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:06:11,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:11,420 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:11,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:06:11,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:06:11,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 00:06:11,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:06:11,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:06:11,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:11,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:11,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:11,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:06:11,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:06:11,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:06:11,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:11,427 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:11,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:06:11,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:06:11,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:06:11,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:06:11,432 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:06:11,433 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1215877363] [2020-10-15 00:06:11,433 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:06:11,433 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-15 00:06:11,433 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763566370] [2020-10-15 00:06:11,434 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-15 00:06:11,434 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:06:11,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-15 00:06:11,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2020-10-15 00:06:11,435 INFO L87 Difference]: Start difference. First operand 89 states and 116 transitions. Second operand 13 states. [2020-10-15 00:06:11,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:06:11,808 INFO L93 Difference]: Finished difference Result 186 states and 248 transitions. [2020-10-15 00:06:11,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-15 00:06:11,808 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 45 [2020-10-15 00:06:11,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:06:11,809 INFO L225 Difference]: With dead ends: 186 [2020-10-15 00:06:11,809 INFO L226 Difference]: Without dead ends: 109 [2020-10-15 00:06:11,811 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=171, Invalid=335, Unknown=0, NotChecked=0, Total=506 [2020-10-15 00:06:11,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-10-15 00:06:11,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 97. [2020-10-15 00:06:11,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-15 00:06:11,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 126 transitions. [2020-10-15 00:06:11,823 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 126 transitions. Word has length 45 [2020-10-15 00:06:11,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:06:11,823 INFO L479 AbstractCegarLoop]: Abstraction has 97 states and 126 transitions. [2020-10-15 00:06:11,823 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-15 00:06:11,823 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 126 transitions. [2020-10-15 00:06:11,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-15 00:06:11,824 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:06:11,824 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 7, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:06:11,824 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-15 00:06:11,825 INFO L427 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:06:11,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:06:11,825 INFO L82 PathProgramCache]: Analyzing trace with hash 325556793, now seen corresponding path program 12 times [2020-10-15 00:06:11,825 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:06:11,826 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1224604654] [2020-10-15 00:06:11,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:06:11,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:11,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:11,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:11,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:11,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:11,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:11,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:11,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:12,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:12,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:12,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-15 00:06:12,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 00:06:12,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 595 [2020-10-15 00:06:12,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:12,428 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:12,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-15 00:06:12,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 00:06:12,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-15 00:06:12,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:06:12,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:06:12,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:12,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:12,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:12,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:06:12,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:06:12,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:06:12,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:12,543 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:12,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:06:12,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:06:12,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 00:06:12,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:06:12,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:06:12,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:12,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:12,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:12,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:06:12,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:06:12,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:06:12,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:12,549 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:12,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:06:12,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:06:12,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:06:12,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:06:12,554 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:06:12,555 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1224604654] [2020-10-15 00:06:12,555 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:06:12,555 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-15 00:06:12,555 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272263582] [2020-10-15 00:06:12,556 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-15 00:06:12,556 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:06:12,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-15 00:06:12,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2020-10-15 00:06:12,557 INFO L87 Difference]: Start difference. First operand 97 states and 126 transitions. Second operand 14 states. [2020-10-15 00:06:12,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:06:12,837 INFO L93 Difference]: Finished difference Result 203 states and 270 transitions. [2020-10-15 00:06:12,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-15 00:06:12,837 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 48 [2020-10-15 00:06:12,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:06:12,838 INFO L225 Difference]: With dead ends: 203 [2020-10-15 00:06:12,838 INFO L226 Difference]: Without dead ends: 118 [2020-10-15 00:06:12,839 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=204, Invalid=396, Unknown=0, NotChecked=0, Total=600 [2020-10-15 00:06:12,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-10-15 00:06:12,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 106. [2020-10-15 00:06:12,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-10-15 00:06:12,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 138 transitions. [2020-10-15 00:06:12,850 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 138 transitions. Word has length 48 [2020-10-15 00:06:12,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:06:12,850 INFO L479 AbstractCegarLoop]: Abstraction has 106 states and 138 transitions. [2020-10-15 00:06:12,850 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-15 00:06:12,850 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 138 transitions. [2020-10-15 00:06:12,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-15 00:06:12,851 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:06:12,851 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 7, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:06:12,851 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-15 00:06:12,851 INFO L427 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:06:12,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:06:12,851 INFO L82 PathProgramCache]: Analyzing trace with hash 1247742313, now seen corresponding path program 13 times [2020-10-15 00:06:12,852 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:06:12,852 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [75529559] [2020-10-15 00:06:12,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:06:12,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:12,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:12,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:12,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:12,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:12,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:12,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:12,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:13,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:13,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:13,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:13,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:13,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:13,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:13,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:13,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-15 00:06:13,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-15 00:06:13,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1113 [2020-10-15 00:06:13,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:13,972 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:13,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-15 00:06:13,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 00:06:13,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-15 00:06:13,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:06:14,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:06:14,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:14,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:14,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:14,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:06:14,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:06:14,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:06:14,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:14,094 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:14,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:06:14,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:06:14,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 00:06:14,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:06:14,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:06:14,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:14,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:14,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:14,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:06:14,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:06:14,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:06:14,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:14,100 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:14,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:06:14,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:06:14,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:06:14,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:06:14,106 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 138 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-15 00:06:14,106 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [75529559] [2020-10-15 00:06:14,106 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:06:14,107 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-15 00:06:14,107 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822550892] [2020-10-15 00:06:14,107 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-15 00:06:14,107 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:06:14,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-15 00:06:14,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2020-10-15 00:06:14,108 INFO L87 Difference]: Start difference. First operand 106 states and 138 transitions. Second operand 14 states. [2020-10-15 00:06:14,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:06:14,784 INFO L93 Difference]: Finished difference Result 264 states and 349 transitions. [2020-10-15 00:06:14,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-15 00:06:14,785 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 51 [2020-10-15 00:06:14,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:06:14,787 INFO L225 Difference]: With dead ends: 264 [2020-10-15 00:06:14,787 INFO L226 Difference]: Without dead ends: 170 [2020-10-15 00:06:14,791 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=302, Invalid=820, Unknown=0, NotChecked=0, Total=1122 [2020-10-15 00:06:14,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-10-15 00:06:14,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 103. [2020-10-15 00:06:14,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-15 00:06:14,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 134 transitions. [2020-10-15 00:06:14,812 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 134 transitions. Word has length 51 [2020-10-15 00:06:14,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:06:14,812 INFO L479 AbstractCegarLoop]: Abstraction has 103 states and 134 transitions. [2020-10-15 00:06:14,812 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-15 00:06:14,812 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 134 transitions. [2020-10-15 00:06:14,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-15 00:06:14,813 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:06:14,813 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 8, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:06:14,814 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-15 00:06:14,814 INFO L427 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:06:14,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:06:14,814 INFO L82 PathProgramCache]: Analyzing trace with hash 226673959, now seen corresponding path program 14 times [2020-10-15 00:06:14,814 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:06:14,815 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [979334856] [2020-10-15 00:06:14,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:06:14,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:14,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:14,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:14,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:14,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:14,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:14,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:14,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:14,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:15,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:15,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-15 00:06:15,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 00:06:15,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 406 [2020-10-15 00:06:15,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:15,228 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:15,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-15 00:06:15,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 00:06:15,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-15 00:06:15,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:06:15,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:06:15,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:15,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:15,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:15,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:06:15,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:06:15,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:06:15,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:15,366 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:15,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:06:15,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:06:15,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 00:06:15,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:06:15,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:06:15,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:15,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:15,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:15,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:06:15,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:06:15,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:06:15,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:15,371 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:15,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:06:15,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:06:15,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:06:15,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:06:15,375 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:06:15,375 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [979334856] [2020-10-15 00:06:15,375 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:06:15,375 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-15 00:06:15,376 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955687458] [2020-10-15 00:06:15,376 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-15 00:06:15,376 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:06:15,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-15 00:06:15,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=128, Unknown=0, NotChecked=0, Total=210 [2020-10-15 00:06:15,377 INFO L87 Difference]: Start difference. First operand 103 states and 134 transitions. Second operand 15 states. [2020-10-15 00:06:15,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:06:15,853 INFO L93 Difference]: Finished difference Result 215 states and 286 transitions. [2020-10-15 00:06:15,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-15 00:06:15,855 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 51 [2020-10-15 00:06:15,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:06:15,856 INFO L225 Difference]: With dead ends: 215 [2020-10-15 00:06:15,856 INFO L226 Difference]: Without dead ends: 124 [2020-10-15 00:06:15,857 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=240, Invalid=462, Unknown=0, NotChecked=0, Total=702 [2020-10-15 00:06:15,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-10-15 00:06:15,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 112. [2020-10-15 00:06:15,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-10-15 00:06:15,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 146 transitions. [2020-10-15 00:06:15,873 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 146 transitions. Word has length 51 [2020-10-15 00:06:15,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:06:15,874 INFO L479 AbstractCegarLoop]: Abstraction has 112 states and 146 transitions. [2020-10-15 00:06:15,874 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-15 00:06:15,874 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 146 transitions. [2020-10-15 00:06:15,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-15 00:06:15,874 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:06:15,874 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 8, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:06:15,875 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-15 00:06:15,875 INFO L427 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:06:15,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:06:15,875 INFO L82 PathProgramCache]: Analyzing trace with hash 1776799675, now seen corresponding path program 15 times [2020-10-15 00:06:15,875 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:06:15,876 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1555337370] [2020-10-15 00:06:15,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:06:15,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:15,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:15,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:15,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:15,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:15,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:15,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:16,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:16,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:16,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:16,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:16,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:16,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:16,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:17,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:17,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-15 00:06:17,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-15 00:06:17,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1780 [2020-10-15 00:06:17,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:17,665 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:17,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-15 00:06:17,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 00:06:17,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-15 00:06:17,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:06:17,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:06:17,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:17,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:17,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:17,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:06:17,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:06:17,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:06:17,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:17,788 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:17,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:06:17,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:06:17,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 00:06:17,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:06:17,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:06:17,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:17,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:17,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:17,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:06:17,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:06:17,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:06:17,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:17,794 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:17,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:06:17,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:06:17,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:06:17,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:06:17,800 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 0 proven. 169 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-15 00:06:17,801 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1555337370] [2020-10-15 00:06:17,801 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:06:17,801 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-15 00:06:17,801 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057940695] [2020-10-15 00:06:17,801 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-15 00:06:17,802 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:06:17,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-15 00:06:17,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2020-10-15 00:06:17,802 INFO L87 Difference]: Start difference. First operand 112 states and 146 transitions. Second operand 15 states. [2020-10-15 00:06:18,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:06:18,924 INFO L93 Difference]: Finished difference Result 294 states and 387 transitions. [2020-10-15 00:06:18,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-10-15 00:06:18,926 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 54 [2020-10-15 00:06:18,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:06:18,927 INFO L225 Difference]: With dead ends: 294 [2020-10-15 00:06:18,927 INFO L226 Difference]: Without dead ends: 194 [2020-10-15 00:06:18,929 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 863 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=807, Invalid=2163, Unknown=0, NotChecked=0, Total=2970 [2020-10-15 00:06:18,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-10-15 00:06:18,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 153. [2020-10-15 00:06:18,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-10-15 00:06:18,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 202 transitions. [2020-10-15 00:06:18,944 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 202 transitions. Word has length 54 [2020-10-15 00:06:18,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:06:18,944 INFO L479 AbstractCegarLoop]: Abstraction has 153 states and 202 transitions. [2020-10-15 00:06:18,944 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-15 00:06:18,944 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 202 transitions. [2020-10-15 00:06:18,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-15 00:06:18,945 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:06:18,945 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 9, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:06:18,945 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-15 00:06:18,946 INFO L427 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:06:18,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:06:18,946 INFO L82 PathProgramCache]: Analyzing trace with hash 755731321, now seen corresponding path program 16 times [2020-10-15 00:06:18,946 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:06:18,946 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1597552603] [2020-10-15 00:06:18,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:06:18,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:18,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:18,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:19,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:19,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:19,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:19,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:19,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:19,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:19,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:19,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-15 00:06:19,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 00:06:19,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 668 [2020-10-15 00:06:19,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:19,625 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:19,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-15 00:06:19,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 00:06:19,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-15 00:06:19,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:06:19,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:06:19,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:19,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:19,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:19,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:06:19,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:06:19,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:06:19,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:19,790 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:19,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:06:19,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:06:19,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 00:06:19,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:06:19,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:06:19,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:19,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:19,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:19,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:06:19,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:06:19,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:06:19,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:19,793 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:19,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:06:19,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:06:19,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:06:19,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:06:19,798 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 0 proven. 176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:06:19,798 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1597552603] [2020-10-15 00:06:19,798 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:06:19,799 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-15 00:06:19,799 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922210877] [2020-10-15 00:06:19,799 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 00:06:19,799 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:06:19,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 00:06:19,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=145, Unknown=0, NotChecked=0, Total=240 [2020-10-15 00:06:19,800 INFO L87 Difference]: Start difference. First operand 153 states and 202 transitions. Second operand 16 states. [2020-10-15 00:06:20,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:06:20,321 INFO L93 Difference]: Finished difference Result 325 states and 435 transitions. [2020-10-15 00:06:20,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-15 00:06:20,323 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 54 [2020-10-15 00:06:20,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:06:20,325 INFO L225 Difference]: With dead ends: 325 [2020-10-15 00:06:20,325 INFO L226 Difference]: Without dead ends: 184 [2020-10-15 00:06:20,326 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=279, Invalid=533, Unknown=0, NotChecked=0, Total=812 [2020-10-15 00:06:20,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2020-10-15 00:06:20,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 165. [2020-10-15 00:06:20,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2020-10-15 00:06:20,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 218 transitions. [2020-10-15 00:06:20,347 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 218 transitions. Word has length 54 [2020-10-15 00:06:20,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:06:20,348 INFO L479 AbstractCegarLoop]: Abstraction has 165 states and 218 transitions. [2020-10-15 00:06:20,348 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 00:06:20,348 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 218 transitions. [2020-10-15 00:06:20,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-15 00:06:20,351 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:06:20,351 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 9, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:06:20,351 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-15 00:06:20,352 INFO L427 AbstractCegarLoop]: === Iteration 23 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:06:20,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:06:20,353 INFO L82 PathProgramCache]: Analyzing trace with hash 394694697, now seen corresponding path program 17 times [2020-10-15 00:06:20,353 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:06:20,358 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [999191531] [2020-10-15 00:06:20,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:06:20,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:20,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:20,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:20,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:20,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:20,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:20,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:20,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:20,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:20,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:20,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:20,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:20,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:20,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:21,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:21,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-15 00:06:21,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-15 00:06:21,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1338 [2020-10-15 00:06:21,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:21,703 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:21,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-15 00:06:21,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 00:06:21,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-15 00:06:21,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:06:21,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:06:21,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:21,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:21,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:21,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:06:21,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:06:21,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:06:21,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:21,890 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:21,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:06:21,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:06:21,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 00:06:21,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-15 00:06:21,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:06:21,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:21,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:21,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:21,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:06:21,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:06:21,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 00:06:21,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:21,906 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:21,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:06:21,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:06:21,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:06:21,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:06:21,921 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 203 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-15 00:06:21,922 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [999191531] [2020-10-15 00:06:21,923 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:06:21,923 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-15 00:06:21,923 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627499778] [2020-10-15 00:06:21,925 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 00:06:21,926 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:06:21,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 00:06:21,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2020-10-15 00:06:21,929 INFO L87 Difference]: Start difference. First operand 165 states and 218 transitions. Second operand 16 states. [2020-10-15 00:06:23,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:06:23,240 INFO L93 Difference]: Finished difference Result 413 states and 547 transitions. [2020-10-15 00:06:23,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-10-15 00:06:23,242 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 57 [2020-10-15 00:06:23,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:06:23,245 INFO L225 Difference]: With dead ends: 413 [2020-10-15 00:06:23,245 INFO L226 Difference]: Without dead ends: 260 [2020-10-15 00:06:23,248 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1054 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=964, Invalid=2576, Unknown=0, NotChecked=0, Total=3540 [2020-10-15 00:06:23,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2020-10-15 00:06:23,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 162. [2020-10-15 00:06:23,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-10-15 00:06:23,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 214 transitions. [2020-10-15 00:06:23,284 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 214 transitions. Word has length 57 [2020-10-15 00:06:23,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:06:23,284 INFO L479 AbstractCegarLoop]: Abstraction has 162 states and 214 transitions. [2020-10-15 00:06:23,284 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 00:06:23,284 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 214 transitions. [2020-10-15 00:06:23,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-15 00:06:23,285 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:06:23,285 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:06:23,285 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-15 00:06:23,286 INFO L427 AbstractCegarLoop]: === Iteration 24 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:06:23,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:06:23,288 INFO L82 PathProgramCache]: Analyzing trace with hash -626373657, now seen corresponding path program 18 times [2020-10-15 00:06:23,288 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:06:23,288 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2114686271] [2020-10-15 00:06:23,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:06:23,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:23,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:23,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:23,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:23,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:23,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:23,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:23,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:23,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:24,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:24,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-15 00:06:24,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 00:06:24,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 876 [2020-10-15 00:06:24,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:24,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:24,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-15 00:06:24,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 00:06:24,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-15 00:06:24,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:06:24,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:06:24,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:24,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:24,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:24,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:06:24,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:06:24,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:06:24,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:24,368 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:24,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:06:24,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:06:24,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 00:06:24,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:06:24,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:06:24,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:24,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:24,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:24,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:06:24,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:06:24,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:06:24,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:24,374 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:24,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:06:24,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:06:24,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:06:24,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:06:24,380 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:06:24,380 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2114686271] [2020-10-15 00:06:24,381 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:06:24,381 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-15 00:06:24,381 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003310000] [2020-10-15 00:06:24,381 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-15 00:06:24,381 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:06:24,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-15 00:06:24,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=163, Unknown=0, NotChecked=0, Total=272 [2020-10-15 00:06:24,382 INFO L87 Difference]: Start difference. First operand 162 states and 214 transitions. Second operand 17 states. [2020-10-15 00:06:24,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:06:24,862 INFO L93 Difference]: Finished difference Result 343 states and 459 transitions. [2020-10-15 00:06:24,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-15 00:06:24,863 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 57 [2020-10-15 00:06:24,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:06:24,864 INFO L225 Difference]: With dead ends: 343 [2020-10-15 00:06:24,865 INFO L226 Difference]: Without dead ends: 193 [2020-10-15 00:06:24,865 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=321, Invalid=609, Unknown=0, NotChecked=0, Total=930 [2020-10-15 00:06:24,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2020-10-15 00:06:24,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 174. [2020-10-15 00:06:24,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-10-15 00:06:24,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 230 transitions. [2020-10-15 00:06:24,881 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 230 transitions. Word has length 57 [2020-10-15 00:06:24,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:06:24,881 INFO L479 AbstractCegarLoop]: Abstraction has 174 states and 230 transitions. [2020-10-15 00:06:24,881 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-15 00:06:24,882 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 230 transitions. [2020-10-15 00:06:24,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-15 00:06:24,882 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:06:24,883 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 10, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:06:24,883 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-15 00:06:24,883 INFO L427 AbstractCegarLoop]: === Iteration 25 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:06:24,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:06:24,883 INFO L82 PathProgramCache]: Analyzing trace with hash 1956761851, now seen corresponding path program 19 times [2020-10-15 00:06:24,883 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:06:24,884 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [56395477] [2020-10-15 00:06:24,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:06:24,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:24,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:24,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:24,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:24,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:24,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:25,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:25,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:25,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:25,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:25,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:25,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:25,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:25,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:27,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:27,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-15 00:06:27,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-15 00:06:27,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2166 [2020-10-15 00:06:27,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:27,058 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:27,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-15 00:06:27,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 00:06:27,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-15 00:06:27,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:06:27,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:06:27,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:27,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:27,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:27,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:06:27,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:06:27,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:06:27,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:27,217 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:27,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:06:27,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:06:27,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 00:06:27,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:06:27,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:06:27,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:27,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:27,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:27,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:06:27,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:06:27,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:06:27,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:27,222 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:27,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:06:27,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:06:27,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:06:27,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:06:27,229 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 0 proven. 240 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-15 00:06:27,229 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [56395477] [2020-10-15 00:06:27,229 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:06:27,230 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-15 00:06:27,230 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394046630] [2020-10-15 00:06:27,230 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-15 00:06:27,230 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:06:27,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-15 00:06:27,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2020-10-15 00:06:27,231 INFO L87 Difference]: Start difference. First operand 174 states and 230 transitions. Second operand 17 states. [2020-10-15 00:06:28,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:06:28,062 INFO L93 Difference]: Finished difference Result 417 states and 555 transitions. [2020-10-15 00:06:28,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-15 00:06:28,063 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 60 [2020-10-15 00:06:28,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:06:28,066 INFO L225 Difference]: With dead ends: 417 [2020-10-15 00:06:28,066 INFO L226 Difference]: Without dead ends: 255 [2020-10-15 00:06:28,070 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 351 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=503, Invalid=1303, Unknown=0, NotChecked=0, Total=1806 [2020-10-15 00:06:28,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2020-10-15 00:06:28,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 121. [2020-10-15 00:06:28,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-10-15 00:06:28,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 158 transitions. [2020-10-15 00:06:28,085 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 158 transitions. Word has length 60 [2020-10-15 00:06:28,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:06:28,085 INFO L479 AbstractCegarLoop]: Abstraction has 121 states and 158 transitions. [2020-10-15 00:06:28,085 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-15 00:06:28,086 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 158 transitions. [2020-10-15 00:06:28,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-15 00:06:28,089 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:06:28,090 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 11, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:06:28,090 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-15 00:06:28,090 INFO L427 AbstractCegarLoop]: === Iteration 26 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:06:28,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:06:28,090 INFO L82 PathProgramCache]: Analyzing trace with hash 935693497, now seen corresponding path program 20 times [2020-10-15 00:06:28,091 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:06:28,091 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1038043794] [2020-10-15 00:06:28,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:06:28,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:28,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:28,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:28,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:28,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:28,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:28,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:28,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:28,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:28,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:28,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-15 00:06:28,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 00:06:28,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 813 [2020-10-15 00:06:28,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:28,915 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:28,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-15 00:06:28,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 00:06:28,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-15 00:06:28,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:06:29,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:06:29,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:29,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:29,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:29,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:06:29,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:06:29,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:06:29,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:29,106 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:29,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:06:29,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:06:29,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 00:06:29,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:06:29,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:06:29,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:29,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:29,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:29,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:06:29,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:06:29,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:06:29,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:29,112 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:29,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:06:29,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:06:29,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:06:29,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:06:29,118 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 00:06:29,118 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1038043794] [2020-10-15 00:06:29,118 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:06:29,119 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-15 00:06:29,119 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675523341] [2020-10-15 00:06:29,119 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-15 00:06:29,119 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:06:29,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-15 00:06:29,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2020-10-15 00:06:29,120 INFO L87 Difference]: Start difference. First operand 121 states and 158 transitions. Second operand 18 states. [2020-10-15 00:06:30,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:06:30,162 INFO L93 Difference]: Finished difference Result 294 states and 391 transitions. [2020-10-15 00:06:30,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-15 00:06:30,164 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 60 [2020-10-15 00:06:30,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:06:30,165 INFO L225 Difference]: With dead ends: 294 [2020-10-15 00:06:30,165 INFO L226 Difference]: Without dead ends: 185 [2020-10-15 00:06:30,167 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 407 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=582, Invalid=1488, Unknown=0, NotChecked=0, Total=2070 [2020-10-15 00:06:30,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-10-15 00:06:30,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 119. [2020-10-15 00:06:30,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-10-15 00:06:30,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 156 transitions. [2020-10-15 00:06:30,180 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 156 transitions. Word has length 60 [2020-10-15 00:06:30,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:06:30,180 INFO L479 AbstractCegarLoop]: Abstraction has 119 states and 156 transitions. [2020-10-15 00:06:30,180 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-15 00:06:30,180 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 156 transitions. [2020-10-15 00:06:30,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-15 00:06:30,181 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:06:30,181 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:06:30,181 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-15 00:06:30,182 INFO L427 AbstractCegarLoop]: === Iteration 27 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:06:30,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:06:30,182 INFO L82 PathProgramCache]: Analyzing trace with hash 348887483, now seen corresponding path program 21 times [2020-10-15 00:06:30,182 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:06:30,182 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [886278029] [2020-10-15 00:06:30,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:06:30,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:30,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:30,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:30,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:30,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:30,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:30,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:30,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-15 00:06:30,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 00:06:30,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 390 [2020-10-15 00:06:30,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:30,580 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:30,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-15 00:06:30,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 00:06:30,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-15 00:06:30,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:06:30,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:06:30,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:30,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:30,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:30,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:06:30,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:06:30,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:06:30,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:30,778 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:30,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:06:30,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:06:30,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 00:06:30,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:06:30,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:06:30,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:30,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:30,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:30,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:06:30,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:06:30,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:06:30,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:30,784 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:30,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:06:30,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:06:30,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:06:30,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:06:30,788 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 0 proven. 247 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:06:30,788 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [886278029] [2020-10-15 00:06:30,788 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:06:30,788 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-15 00:06:30,789 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593322617] [2020-10-15 00:06:30,789 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-15 00:06:30,789 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:06:30,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-15 00:06:30,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=182, Unknown=0, NotChecked=0, Total=306 [2020-10-15 00:06:30,790 INFO L87 Difference]: Start difference. First operand 119 states and 156 transitions. Second operand 18 states. [2020-10-15 00:06:31,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:06:31,351 INFO L93 Difference]: Finished difference Result 246 states and 328 transitions. [2020-10-15 00:06:31,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-15 00:06:31,351 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 60 [2020-10-15 00:06:31,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:06:31,352 INFO L225 Difference]: With dead ends: 246 [2020-10-15 00:06:31,353 INFO L226 Difference]: Without dead ends: 139 [2020-10-15 00:06:31,354 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=366, Invalid=690, Unknown=0, NotChecked=0, Total=1056 [2020-10-15 00:06:31,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-10-15 00:06:31,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 127. [2020-10-15 00:06:31,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-10-15 00:06:31,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 166 transitions. [2020-10-15 00:06:31,366 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 166 transitions. Word has length 60 [2020-10-15 00:06:31,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:06:31,366 INFO L479 AbstractCegarLoop]: Abstraction has 127 states and 166 transitions. [2020-10-15 00:06:31,366 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-15 00:06:31,366 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 166 transitions. [2020-10-15 00:06:31,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-15 00:06:31,367 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:06:31,367 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 12, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:06:31,367 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-15 00:06:31,367 INFO L427 AbstractCegarLoop]: === Iteration 28 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:06:31,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:06:31,368 INFO L82 PathProgramCache]: Analyzing trace with hash 507626151, now seen corresponding path program 22 times [2020-10-15 00:06:31,368 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:06:31,368 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [739794105] [2020-10-15 00:06:31,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:06:31,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:31,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:31,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:31,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:31,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:31,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:31,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:31,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:31,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:31,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:31,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-15 00:06:31,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 00:06:31,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 552 [2020-10-15 00:06:31,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:31,928 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:31,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-15 00:06:31,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 00:06:31,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-15 00:06:31,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:06:32,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:06:32,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:32,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:32,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:32,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:06:32,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:06:32,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:06:32,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:32,143 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:32,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:06:32,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:06:32,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 00:06:32,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:06:32,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:06:32,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:32,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:32,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:32,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:06:32,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:06:32,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:06:32,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:32,147 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:32,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:06:32,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:06:32,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:06:32,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:06:32,152 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 0 proven. 287 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:06:32,153 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [739794105] [2020-10-15 00:06:32,153 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:06:32,153 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-15 00:06:32,153 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048791545] [2020-10-15 00:06:32,153 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-15 00:06:32,154 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:06:32,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-15 00:06:32,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=202, Unknown=0, NotChecked=0, Total=342 [2020-10-15 00:06:32,154 INFO L87 Difference]: Start difference. First operand 127 states and 166 transitions. Second operand 19 states. [2020-10-15 00:06:32,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:06:32,784 INFO L93 Difference]: Finished difference Result 263 states and 350 transitions. [2020-10-15 00:06:32,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-15 00:06:32,786 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 63 [2020-10-15 00:06:32,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:06:32,787 INFO L225 Difference]: With dead ends: 263 [2020-10-15 00:06:32,787 INFO L226 Difference]: Without dead ends: 148 [2020-10-15 00:06:32,788 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=414, Invalid=776, Unknown=0, NotChecked=0, Total=1190 [2020-10-15 00:06:32,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-10-15 00:06:32,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 136. [2020-10-15 00:06:32,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-10-15 00:06:32,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 178 transitions. [2020-10-15 00:06:32,799 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 178 transitions. Word has length 63 [2020-10-15 00:06:32,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:06:32,800 INFO L479 AbstractCegarLoop]: Abstraction has 136 states and 178 transitions. [2020-10-15 00:06:32,800 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-15 00:06:32,800 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 178 transitions. [2020-10-15 00:06:32,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-15 00:06:32,801 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:06:32,801 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 12, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:06:32,801 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-15 00:06:32,801 INFO L427 AbstractCegarLoop]: === Iteration 29 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:06:32,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:06:32,801 INFO L82 PathProgramCache]: Analyzing trace with hash 732291643, now seen corresponding path program 23 times [2020-10-15 00:06:32,802 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:06:32,802 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1994204672] [2020-10-15 00:06:32,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:06:32,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:32,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:32,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:32,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:32,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:32,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:32,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:32,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:32,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:33,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:33,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:33,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:33,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:33,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:34,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:34,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-15 00:06:34,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-15 00:06:34,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1371 [2020-10-15 00:06:34,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:34,181 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:34,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-15 00:06:34,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 00:06:34,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-15 00:06:34,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:06:34,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:06:34,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:34,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:34,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:34,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:06:34,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:06:34,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:06:34,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:34,393 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:34,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:06:34,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:06:34,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 00:06:34,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:06:34,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:06:34,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:34,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:34,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:34,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:06:34,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:06:34,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:06:34,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:34,397 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:34,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:06:34,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:06:34,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:06:34,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:06:34,402 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 0 proven. 323 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-15 00:06:34,403 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1994204672] [2020-10-15 00:06:34,403 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:06:34,403 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-15 00:06:34,403 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942504797] [2020-10-15 00:06:34,403 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-15 00:06:34,403 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:06:34,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-15 00:06:34,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=229, Unknown=0, NotChecked=0, Total=342 [2020-10-15 00:06:34,404 INFO L87 Difference]: Start difference. First operand 136 states and 178 transitions. Second operand 19 states. [2020-10-15 00:06:36,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:06:36,003 INFO L93 Difference]: Finished difference Result 358 states and 471 transitions. [2020-10-15 00:06:36,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2020-10-15 00:06:36,004 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 66 [2020-10-15 00:06:36,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:06:36,005 INFO L225 Difference]: With dead ends: 358 [2020-10-15 00:06:36,006 INFO L226 Difference]: Without dead ends: 234 [2020-10-15 00:06:36,008 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1741 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1519, Invalid=4031, Unknown=0, NotChecked=0, Total=5550 [2020-10-15 00:06:36,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2020-10-15 00:06:36,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 189. [2020-10-15 00:06:36,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2020-10-15 00:06:36,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 250 transitions. [2020-10-15 00:06:36,025 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 250 transitions. Word has length 66 [2020-10-15 00:06:36,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:06:36,025 INFO L479 AbstractCegarLoop]: Abstraction has 189 states and 250 transitions. [2020-10-15 00:06:36,025 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-15 00:06:36,025 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 250 transitions. [2020-10-15 00:06:36,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-15 00:06:36,026 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:06:36,026 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 13, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:06:36,026 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-15 00:06:36,027 INFO L427 AbstractCegarLoop]: === Iteration 30 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:06:36,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:06:36,027 INFO L82 PathProgramCache]: Analyzing trace with hash -288776711, now seen corresponding path program 24 times [2020-10-15 00:06:36,027 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:06:36,027 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [173239676] [2020-10-15 00:06:36,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:06:36,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:36,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:36,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:36,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:36,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:36,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:36,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:36,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:36,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:36,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:36,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-15 00:06:36,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 00:06:36,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 661 [2020-10-15 00:06:36,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:36,696 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:36,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-15 00:06:36,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 00:06:36,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-15 00:06:36,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:06:36,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:06:36,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:36,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:36,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:36,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:06:36,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:06:36,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:06:36,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:36,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:36,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:06:36,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:06:36,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 00:06:36,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:06:36,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:06:36,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:36,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:36,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:36,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:06:36,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:06:36,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:06:36,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:36,925 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:36,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:06:36,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:06:36,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:06:36,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:06:36,931 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 0 proven. 328 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 00:06:36,931 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [173239676] [2020-10-15 00:06:36,931 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:06:36,931 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-15 00:06:36,932 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285875244] [2020-10-15 00:06:36,932 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-15 00:06:36,932 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:06:36,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-15 00:06:36,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=252, Unknown=0, NotChecked=0, Total=380 [2020-10-15 00:06:36,933 INFO L87 Difference]: Start difference. First operand 189 states and 250 transitions. Second operand 20 states. [2020-10-15 00:06:38,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:06:38,040 INFO L93 Difference]: Finished difference Result 440 states and 588 transitions. [2020-10-15 00:06:38,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-15 00:06:38,041 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 66 [2020-10-15 00:06:38,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:06:38,043 INFO L225 Difference]: With dead ends: 440 [2020-10-15 00:06:38,043 INFO L226 Difference]: Without dead ends: 263 [2020-10-15 00:06:38,045 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 531 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=758, Invalid=1894, Unknown=0, NotChecked=0, Total=2652 [2020-10-15 00:06:38,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2020-10-15 00:06:38,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 131. [2020-10-15 00:06:38,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-10-15 00:06:38,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 172 transitions. [2020-10-15 00:06:38,069 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 172 transitions. Word has length 66 [2020-10-15 00:06:38,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:06:38,070 INFO L479 AbstractCegarLoop]: Abstraction has 131 states and 172 transitions. [2020-10-15 00:06:38,070 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-15 00:06:38,070 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 172 transitions. [2020-10-15 00:06:38,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-15 00:06:38,073 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:06:38,073 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:06:38,073 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-15 00:06:38,073 INFO L427 AbstractCegarLoop]: === Iteration 31 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:06:38,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:06:38,074 INFO L82 PathProgramCache]: Analyzing trace with hash -875582725, now seen corresponding path program 25 times [2020-10-15 00:06:38,074 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:06:38,074 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [307622602] [2020-10-15 00:06:38,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:06:38,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:38,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:38,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:38,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:38,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:38,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:38,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:38,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-15 00:06:38,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 00:06:38,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 527 [2020-10-15 00:06:38,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:38,611 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:38,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-15 00:06:38,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 00:06:38,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-15 00:06:38,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:06:38,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:06:38,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:38,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:38,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:38,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:06:38,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:06:38,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:06:38,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:38,853 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:38,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:06:38,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:06:38,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 00:06:38,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:06:38,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:06:38,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:38,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:38,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:38,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:06:38,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:06:38,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:06:38,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:38,857 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:38,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:06:38,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:06:38,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:06:38,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:06:38,862 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 0 proven. 330 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:06:38,863 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [307622602] [2020-10-15 00:06:38,863 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:06:38,863 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-15 00:06:38,863 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901751861] [2020-10-15 00:06:38,863 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-15 00:06:38,864 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:06:38,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-15 00:06:38,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=223, Unknown=0, NotChecked=0, Total=380 [2020-10-15 00:06:38,864 INFO L87 Difference]: Start difference. First operand 131 states and 172 transitions. Second operand 20 states. [2020-10-15 00:06:39,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:06:39,383 INFO L93 Difference]: Finished difference Result 270 states and 360 transitions. [2020-10-15 00:06:39,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-15 00:06:39,383 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 66 [2020-10-15 00:06:39,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:06:39,384 INFO L225 Difference]: With dead ends: 270 [2020-10-15 00:06:39,384 INFO L226 Difference]: Without dead ends: 151 [2020-10-15 00:06:39,385 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=465, Invalid=867, Unknown=0, NotChecked=0, Total=1332 [2020-10-15 00:06:39,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-10-15 00:06:39,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 139. [2020-10-15 00:06:39,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-10-15 00:06:39,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 182 transitions. [2020-10-15 00:06:39,400 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 182 transitions. Word has length 66 [2020-10-15 00:06:39,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:06:39,400 INFO L479 AbstractCegarLoop]: Abstraction has 139 states and 182 transitions. [2020-10-15 00:06:39,400 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-15 00:06:39,400 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 182 transitions. [2020-10-15 00:06:39,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-15 00:06:39,401 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:06:39,401 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 14, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:06:39,401 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-15 00:06:39,401 INFO L427 AbstractCegarLoop]: === Iteration 32 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:06:39,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:06:39,401 INFO L82 PathProgramCache]: Analyzing trace with hash -527095449, now seen corresponding path program 26 times [2020-10-15 00:06:39,402 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:06:39,402 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [319377691] [2020-10-15 00:06:39,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:06:39,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:39,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:39,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:39,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:39,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:39,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:39,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:39,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:39,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:40,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:40,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-15 00:06:40,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 00:06:40,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 978 [2020-10-15 00:06:40,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:40,387 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:40,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-15 00:06:40,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 00:06:40,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-15 00:06:40,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:06:40,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:06:40,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:40,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:40,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:40,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:06:40,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:06:40,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:06:40,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:40,655 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:40,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:06:40,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:06:40,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 00:06:40,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:06:40,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:06:40,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:40,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:40,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:40,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:06:40,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:06:40,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:06:40,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:40,659 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:40,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:06:40,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:06:40,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:06:40,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:06:40,666 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 0 proven. 374 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 00:06:40,666 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [319377691] [2020-10-15 00:06:40,666 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:06:40,666 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-15 00:06:40,666 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369308797] [2020-10-15 00:06:40,667 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-15 00:06:40,667 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:06:40,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-15 00:06:40,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=276, Unknown=0, NotChecked=0, Total=420 [2020-10-15 00:06:40,668 INFO L87 Difference]: Start difference. First operand 139 states and 182 transitions. Second operand 21 states. [2020-10-15 00:06:42,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:06:42,518 INFO L93 Difference]: Finished difference Result 360 states and 475 transitions. [2020-10-15 00:06:42,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2020-10-15 00:06:42,526 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 69 [2020-10-15 00:06:42,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:06:42,527 INFO L225 Difference]: With dead ends: 360 [2020-10-15 00:06:42,527 INFO L226 Difference]: Without dead ends: 233 [2020-10-15 00:06:42,537 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2294 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1959, Invalid=5181, Unknown=0, NotChecked=0, Total=7140 [2020-10-15 00:06:42,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2020-10-15 00:06:42,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 196. [2020-10-15 00:06:42,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-10-15 00:06:42,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 260 transitions. [2020-10-15 00:06:42,559 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 260 transitions. Word has length 69 [2020-10-15 00:06:42,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:06:42,561 INFO L479 AbstractCegarLoop]: Abstraction has 196 states and 260 transitions. [2020-10-15 00:06:42,561 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-15 00:06:42,561 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 260 transitions. [2020-10-15 00:06:42,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-15 00:06:42,562 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:06:42,563 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:06:42,563 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-15 00:06:42,563 INFO L427 AbstractCegarLoop]: === Iteration 33 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:06:42,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:06:42,563 INFO L82 PathProgramCache]: Analyzing trace with hash -1113901463, now seen corresponding path program 27 times [2020-10-15 00:06:42,563 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:06:42,563 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2025114853] [2020-10-15 00:06:42,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:06:42,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:42,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:42,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:42,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:42,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:42,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:43,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:43,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-15 00:06:43,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 00:06:43,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 553 [2020-10-15 00:06:43,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:43,125 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:43,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-15 00:06:43,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 00:06:43,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-15 00:06:43,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:06:43,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:06:43,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:43,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:43,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:43,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:06:43,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:06:43,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:06:43,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:43,396 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:43,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:06:43,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:06:43,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 00:06:43,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:06:43,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:06:43,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:43,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:43,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:43,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:06:43,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:06:43,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:06:43,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:43,403 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:43,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:06:43,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:06:43,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:06:43,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:06:43,412 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 0 proven. 376 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:06:43,412 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2025114853] [2020-10-15 00:06:43,413 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:06:43,413 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-15 00:06:43,413 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192636954] [2020-10-15 00:06:43,413 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-15 00:06:43,414 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:06:43,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-15 00:06:43,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=245, Unknown=0, NotChecked=0, Total=420 [2020-10-15 00:06:43,414 INFO L87 Difference]: Start difference. First operand 196 states and 260 transitions. Second operand 21 states. [2020-10-15 00:06:44,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:06:44,031 INFO L93 Difference]: Finished difference Result 410 states and 549 transitions. [2020-10-15 00:06:44,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-15 00:06:44,034 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 69 [2020-10-15 00:06:44,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:06:44,037 INFO L225 Difference]: With dead ends: 410 [2020-10-15 00:06:44,037 INFO L226 Difference]: Without dead ends: 226 [2020-10-15 00:06:44,040 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=519, Invalid=963, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 00:06:44,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-10-15 00:06:44,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 207. [2020-10-15 00:06:44,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2020-10-15 00:06:44,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 274 transitions. [2020-10-15 00:06:44,065 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 274 transitions. Word has length 69 [2020-10-15 00:06:44,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:06:44,065 INFO L479 AbstractCegarLoop]: Abstraction has 207 states and 274 transitions. [2020-10-15 00:06:44,065 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-15 00:06:44,065 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 274 transitions. [2020-10-15 00:06:44,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-15 00:06:44,066 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:06:44,066 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 15, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:06:44,067 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-15 00:06:44,067 INFO L427 AbstractCegarLoop]: === Iteration 34 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:06:44,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:06:44,068 INFO L82 PathProgramCache]: Analyzing trace with hash -699678919, now seen corresponding path program 28 times [2020-10-15 00:06:44,068 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:06:44,068 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1302605382] [2020-10-15 00:06:44,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:06:44,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:44,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:44,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:44,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:44,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:44,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:44,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:44,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:44,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:44,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:44,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-15 00:06:44,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 00:06:44,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 747 [2020-10-15 00:06:44,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:44,825 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:44,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-15 00:06:44,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 00:06:44,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-15 00:06:44,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:06:45,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:06:45,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:45,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:45,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:45,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:06:45,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:06:45,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:06:45,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:45,110 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:45,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:06:45,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:06:45,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 00:06:45,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:06:45,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:06:45,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:45,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:45,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:45,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:06:45,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:06:45,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:06:45,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:45,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:45,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:06:45,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:06:45,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:06:45,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:06:45,121 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 0 proven. 423 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 00:06:45,122 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1302605382] [2020-10-15 00:06:45,122 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:06:45,122 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-15 00:06:45,122 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031299422] [2020-10-15 00:06:45,123 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-15 00:06:45,123 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:06:45,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-15 00:06:45,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=301, Unknown=0, NotChecked=0, Total=462 [2020-10-15 00:06:45,124 INFO L87 Difference]: Start difference. First operand 207 states and 274 transitions. Second operand 22 states. [2020-10-15 00:06:47,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:06:47,544 INFO L93 Difference]: Finished difference Result 505 states and 670 transitions. [2020-10-15 00:06:47,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2020-10-15 00:06:47,544 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 72 [2020-10-15 00:06:47,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:06:47,546 INFO L225 Difference]: With dead ends: 505 [2020-10-15 00:06:47,546 INFO L226 Difference]: Without dead ends: 310 [2020-10-15 00:06:47,550 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2599 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=2200, Invalid=5810, Unknown=0, NotChecked=0, Total=8010 [2020-10-15 00:06:47,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2020-10-15 00:06:47,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 205. [2020-10-15 00:06:47,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2020-10-15 00:06:47,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 272 transitions. [2020-10-15 00:06:47,572 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 272 transitions. Word has length 72 [2020-10-15 00:06:47,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:06:47,572 INFO L479 AbstractCegarLoop]: Abstraction has 205 states and 272 transitions. [2020-10-15 00:06:47,573 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-15 00:06:47,573 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 272 transitions. [2020-10-15 00:06:47,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-15 00:06:47,574 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:06:47,574 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:06:47,574 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-15 00:06:47,574 INFO L427 AbstractCegarLoop]: === Iteration 35 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:06:47,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:06:47,574 INFO L82 PathProgramCache]: Analyzing trace with hash -1286484933, now seen corresponding path program 29 times [2020-10-15 00:06:47,575 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:06:47,575 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1354891395] [2020-10-15 00:06:47,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:06:47,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:47,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:47,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:47,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:47,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:47,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:48,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:48,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-15 00:06:48,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 00:06:48,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 494 [2020-10-15 00:06:48,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:48,078 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:48,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-15 00:06:48,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 00:06:48,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-15 00:06:48,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:06:48,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:06:48,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:48,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:48,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:48,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:06:48,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:06:48,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:06:48,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:48,371 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:48,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:06:48,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:06:48,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 00:06:48,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:06:48,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:06:48,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:48,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:48,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:48,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:06:48,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:06:48,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:06:48,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:48,375 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:48,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:06:48,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:06:48,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:06:48,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:06:48,383 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 0 proven. 425 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:06:48,383 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1354891395] [2020-10-15 00:06:48,384 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:06:48,384 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-15 00:06:48,384 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811964504] [2020-10-15 00:06:48,384 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-15 00:06:48,384 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:06:48,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-15 00:06:48,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=268, Unknown=0, NotChecked=0, Total=462 [2020-10-15 00:06:48,385 INFO L87 Difference]: Start difference. First operand 205 states and 272 transitions. Second operand 22 states. [2020-10-15 00:06:49,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:06:49,197 INFO L93 Difference]: Finished difference Result 428 states and 573 transitions. [2020-10-15 00:06:49,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-15 00:06:49,197 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 72 [2020-10-15 00:06:49,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:06:49,199 INFO L225 Difference]: With dead ends: 428 [2020-10-15 00:06:49,199 INFO L226 Difference]: Without dead ends: 235 [2020-10-15 00:06:49,200 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=576, Invalid=1064, Unknown=0, NotChecked=0, Total=1640 [2020-10-15 00:06:49,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2020-10-15 00:06:49,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 216. [2020-10-15 00:06:49,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-10-15 00:06:49,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 286 transitions. [2020-10-15 00:06:49,221 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 286 transitions. Word has length 72 [2020-10-15 00:06:49,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:06:49,221 INFO L479 AbstractCegarLoop]: Abstraction has 216 states and 286 transitions. [2020-10-15 00:06:49,221 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-15 00:06:49,222 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 286 transitions. [2020-10-15 00:06:49,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-15 00:06:49,222 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:06:49,222 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 16, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:06:49,222 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-15 00:06:49,222 INFO L427 AbstractCegarLoop]: === Iteration 36 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:06:49,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:06:49,223 INFO L82 PathProgramCache]: Analyzing trace with hash -1057980377, now seen corresponding path program 30 times [2020-10-15 00:06:49,223 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:06:49,223 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [552663409] [2020-10-15 00:06:49,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:06:49,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:49,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:49,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:49,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:49,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:49,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:49,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:49,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:49,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:50,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:50,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-15 00:06:50,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 00:06:50,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 800 [2020-10-15 00:06:50,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:50,033 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:50,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-15 00:06:50,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 00:06:50,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-15 00:06:50,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:06:50,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:06:50,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:50,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:50,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:50,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:06:50,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:06:50,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:06:50,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:50,333 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:50,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:06:50,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:06:50,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 00:06:50,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:06:50,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:06:50,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:50,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:50,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:50,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:06:50,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:06:50,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:06:50,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:50,337 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:50,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:06:50,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:06:50,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:06:50,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:06:50,346 INFO L134 CoverageAnalysis]: Checked inductivity of 477 backedges. 0 proven. 475 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 00:06:50,347 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [552663409] [2020-10-15 00:06:50,347 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:06:50,347 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-15 00:06:50,347 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137335625] [2020-10-15 00:06:50,348 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-15 00:06:50,348 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:06:50,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-15 00:06:50,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=327, Unknown=0, NotChecked=0, Total=506 [2020-10-15 00:06:50,348 INFO L87 Difference]: Start difference. First operand 216 states and 286 transitions. Second operand 23 states. [2020-10-15 00:06:51,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:06:51,886 INFO L93 Difference]: Finished difference Result 503 states and 672 transitions. [2020-10-15 00:06:51,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-10-15 00:06:51,887 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 75 [2020-10-15 00:06:51,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:06:51,888 INFO L225 Difference]: With dead ends: 503 [2020-10-15 00:06:51,889 INFO L226 Difference]: Without dead ends: 299 [2020-10-15 00:06:51,891 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 747 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1067, Invalid=2593, Unknown=0, NotChecked=0, Total=3660 [2020-10-15 00:06:51,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2020-10-15 00:06:51,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 149. [2020-10-15 00:06:51,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-10-15 00:06:51,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 196 transitions. [2020-10-15 00:06:51,912 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 196 transitions. Word has length 75 [2020-10-15 00:06:51,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:06:51,912 INFO L479 AbstractCegarLoop]: Abstraction has 149 states and 196 transitions. [2020-10-15 00:06:51,913 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-15 00:06:51,913 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 196 transitions. [2020-10-15 00:06:51,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-15 00:06:51,914 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:06:51,914 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:06:51,914 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-15 00:06:51,914 INFO L427 AbstractCegarLoop]: === Iteration 37 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:06:51,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:06:51,915 INFO L82 PathProgramCache]: Analyzing trace with hash -1644786391, now seen corresponding path program 31 times [2020-10-15 00:06:51,915 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:06:51,915 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [114467177] [2020-10-15 00:06:51,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:06:51,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:51,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:51,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:52,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:52,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:52,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:52,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:52,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-15 00:06:52,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 00:06:52,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 803 [2020-10-15 00:06:52,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:52,729 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:52,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-15 00:06:52,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 00:06:52,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-15 00:06:52,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:06:53,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:06:53,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:53,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:53,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:53,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:06:53,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:06:53,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:06:53,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:53,041 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:53,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:06:53,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:06:53,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 00:06:53,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:06:53,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:06:53,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:53,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:53,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:53,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:06:53,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:06:53,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:06:53,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:53,046 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:53,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:06:53,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:06:53,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:06:53,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:06:53,054 INFO L134 CoverageAnalysis]: Checked inductivity of 477 backedges. 0 proven. 477 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:06:53,055 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [114467177] [2020-10-15 00:06:53,055 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:06:53,055 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-15 00:06:53,055 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980059753] [2020-10-15 00:06:53,055 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-15 00:06:53,055 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:06:53,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-15 00:06:53,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=214, Invalid=292, Unknown=0, NotChecked=0, Total=506 [2020-10-15 00:06:53,056 INFO L87 Difference]: Start difference. First operand 149 states and 196 transitions. Second operand 23 states. [2020-10-15 00:06:53,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:06:53,829 INFO L93 Difference]: Finished difference Result 306 states and 408 transitions. [2020-10-15 00:06:53,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-15 00:06:53,829 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 75 [2020-10-15 00:06:53,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:06:53,830 INFO L225 Difference]: With dead ends: 306 [2020-10-15 00:06:53,830 INFO L226 Difference]: Without dead ends: 169 [2020-10-15 00:06:53,831 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=636, Invalid=1170, Unknown=0, NotChecked=0, Total=1806 [2020-10-15 00:06:53,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2020-10-15 00:06:53,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 157. [2020-10-15 00:06:53,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-10-15 00:06:53,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 206 transitions. [2020-10-15 00:06:53,853 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 206 transitions. Word has length 75 [2020-10-15 00:06:53,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:06:53,853 INFO L479 AbstractCegarLoop]: Abstraction has 157 states and 206 transitions. [2020-10-15 00:06:53,853 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-15 00:06:53,853 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 206 transitions. [2020-10-15 00:06:53,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-15 00:06:53,854 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:06:53,855 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 17, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:06:53,855 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-15 00:06:53,855 INFO L427 AbstractCegarLoop]: === Iteration 38 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:06:53,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:06:53,855 INFO L82 PathProgramCache]: Analyzing trace with hash 2071982201, now seen corresponding path program 32 times [2020-10-15 00:06:53,855 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:06:53,856 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [821123737] [2020-10-15 00:06:53,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:06:53,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:53,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:53,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:53,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:53,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:54,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:54,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:54,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:54,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:54,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:54,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-15 00:06:54,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 00:06:54,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 937 [2020-10-15 00:06:54,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:54,802 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:54,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-15 00:06:54,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 00:06:54,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-15 00:06:54,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:06:55,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:06:55,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:55,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:55,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:55,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:06:55,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:06:55,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:06:55,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:55,151 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:55,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:06:55,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:06:55,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 00:06:55,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:06:55,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:06:55,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:55,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:55,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:55,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:06:55,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:06:55,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:06:55,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:55,154 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:55,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:06:55,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:06:55,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:06:55,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:06:55,162 INFO L134 CoverageAnalysis]: Checked inductivity of 532 backedges. 0 proven. 532 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:06:55,162 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [821123737] [2020-10-15 00:06:55,163 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:06:55,163 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-15 00:06:55,163 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981609629] [2020-10-15 00:06:55,163 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-15 00:06:55,163 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:06:55,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-15 00:06:55,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=235, Invalid=317, Unknown=0, NotChecked=0, Total=552 [2020-10-15 00:06:55,164 INFO L87 Difference]: Start difference. First operand 157 states and 206 transitions. Second operand 24 states. [2020-10-15 00:06:56,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:06:56,088 INFO L93 Difference]: Finished difference Result 323 states and 430 transitions. [2020-10-15 00:06:56,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-15 00:06:56,088 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 78 [2020-10-15 00:06:56,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:06:56,089 INFO L225 Difference]: With dead ends: 323 [2020-10-15 00:06:56,089 INFO L226 Difference]: Without dead ends: 178 [2020-10-15 00:06:56,090 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=699, Invalid=1281, Unknown=0, NotChecked=0, Total=1980 [2020-10-15 00:06:56,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-10-15 00:06:56,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 166. [2020-10-15 00:06:56,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2020-10-15 00:06:56,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 218 transitions. [2020-10-15 00:06:56,106 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 218 transitions. Word has length 78 [2020-10-15 00:06:56,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:06:56,106 INFO L479 AbstractCegarLoop]: Abstraction has 166 states and 218 transitions. [2020-10-15 00:06:56,106 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-15 00:06:56,106 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 218 transitions. [2020-10-15 00:06:56,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-15 00:06:56,107 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:06:56,107 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 17, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:06:56,107 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-15 00:06:56,107 INFO L427 AbstractCegarLoop]: === Iteration 39 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:06:56,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:06:56,107 INFO L82 PathProgramCache]: Analyzing trace with hash -226751703, now seen corresponding path program 33 times [2020-10-15 00:06:56,107 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:06:56,108 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1410236735] [2020-10-15 00:06:56,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:06:56,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:56,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:56,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:56,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:56,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:56,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:56,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:56,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:56,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:56,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:56,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:56,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:56,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:56,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:57,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:57,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-15 00:06:57,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-15 00:06:57,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 995 [2020-10-15 00:06:57,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:57,111 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:57,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-15 00:06:57,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 00:06:57,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-15 00:06:57,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:06:57,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:06:57,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:57,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:57,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:57,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:06:57,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:06:57,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:06:57,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:57,429 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:57,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:06:57,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:06:57,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 00:06:57,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:06:57,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:06:57,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:57,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:57,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:57,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:06:57,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:06:57,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:06:57,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:57,433 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:57,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:06:57,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:06:57,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:06:57,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:06:57,441 INFO L134 CoverageAnalysis]: Checked inductivity of 590 backedges. 0 proven. 583 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-15 00:06:57,441 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1410236735] [2020-10-15 00:06:57,442 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:06:57,442 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-15 00:06:57,442 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802416341] [2020-10-15 00:06:57,442 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-15 00:06:57,442 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:06:57,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-15 00:06:57,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=354, Unknown=0, NotChecked=0, Total=552 [2020-10-15 00:06:57,443 INFO L87 Difference]: Start difference. First operand 166 states and 218 transitions. Second operand 24 states. [2020-10-15 00:06:59,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:06:59,090 INFO L93 Difference]: Finished difference Result 414 states and 549 transitions. [2020-10-15 00:06:59,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-10-15 00:06:59,091 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 81 [2020-10-15 00:06:59,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:06:59,093 INFO L225 Difference]: With dead ends: 414 [2020-10-15 00:06:59,093 INFO L226 Difference]: Without dead ends: 260 [2020-10-15 00:06:59,094 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 827 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1182, Invalid=2850, Unknown=0, NotChecked=0, Total=4032 [2020-10-15 00:06:59,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2020-10-15 00:06:59,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 163. [2020-10-15 00:06:59,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-10-15 00:06:59,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 214 transitions. [2020-10-15 00:06:59,116 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 214 transitions. Word has length 81 [2020-10-15 00:06:59,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:06:59,116 INFO L479 AbstractCegarLoop]: Abstraction has 163 states and 214 transitions. [2020-10-15 00:06:59,116 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-15 00:06:59,117 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 214 transitions. [2020-10-15 00:06:59,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-15 00:06:59,117 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:06:59,118 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 18, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:06:59,118 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-15 00:06:59,118 INFO L427 AbstractCegarLoop]: === Iteration 40 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:06:59,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:06:59,118 INFO L82 PathProgramCache]: Analyzing trace with hash -1247820057, now seen corresponding path program 34 times [2020-10-15 00:06:59,119 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:06:59,119 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [58465310] [2020-10-15 00:06:59,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:06:59,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:59,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:59,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:59,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:59,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:59,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:59,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:59,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:59,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:59,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:59,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-15 00:06:59,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 00:06:59,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 783 [2020-10-15 00:06:59,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:59,911 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:59,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-15 00:06:59,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 00:06:59,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-15 00:06:59,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:00,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:07:00,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:00,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:00,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:00,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:07:00,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:00,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:07:00,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:00,280 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:00,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:07:00,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:00,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 00:07:00,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:00,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:07:00,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:00,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:00,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:00,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:07:00,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:00,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:07:00,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:00,284 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:00,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:07:00,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:00,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:07:00,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:00,292 INFO L134 CoverageAnalysis]: Checked inductivity of 590 backedges. 0 proven. 588 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 00:07:00,293 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [58465310] [2020-10-15 00:07:00,293 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:07:00,293 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-15 00:07:00,293 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442885886] [2020-10-15 00:07:00,293 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-15 00:07:00,294 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:07:00,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-15 00:07:00,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=218, Invalid=382, Unknown=0, NotChecked=0, Total=600 [2020-10-15 00:07:00,294 INFO L87 Difference]: Start difference. First operand 163 states and 214 transitions. Second operand 25 states. [2020-10-15 00:07:03,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:07:03,104 INFO L93 Difference]: Finished difference Result 424 states and 559 transitions. [2020-10-15 00:07:03,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2020-10-15 00:07:03,104 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 81 [2020-10-15 00:07:03,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:07:03,106 INFO L225 Difference]: With dead ends: 424 [2020-10-15 00:07:03,106 INFO L226 Difference]: Without dead ends: 273 [2020-10-15 00:07:03,107 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3628 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=3007, Invalid=7913, Unknown=0, NotChecked=0, Total=10920 [2020-10-15 00:07:03,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2020-10-15 00:07:03,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 232. [2020-10-15 00:07:03,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2020-10-15 00:07:03,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 308 transitions. [2020-10-15 00:07:03,125 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 308 transitions. Word has length 81 [2020-10-15 00:07:03,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:07:03,126 INFO L479 AbstractCegarLoop]: Abstraction has 232 states and 308 transitions. [2020-10-15 00:07:03,126 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-15 00:07:03,126 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 308 transitions. [2020-10-15 00:07:03,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-15 00:07:03,126 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:07:03,127 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:07:03,127 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-15 00:07:03,127 INFO L427 AbstractCegarLoop]: === Iteration 41 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:07:03,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:07:03,127 INFO L82 PathProgramCache]: Analyzing trace with hash -1834626071, now seen corresponding path program 35 times [2020-10-15 00:07:03,127 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:07:03,127 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1337896376] [2020-10-15 00:07:03,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:07:03,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:03,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:03,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:03,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:03,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:03,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:03,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:03,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-15 00:07:03,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 00:07:03,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 448 [2020-10-15 00:07:03,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:03,584 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:03,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-15 00:07:03,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 00:07:03,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-15 00:07:03,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:03,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:07:03,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:03,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:03,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:03,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:07:03,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:03,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:07:03,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:03,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:03,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:07:03,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:03,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 00:07:03,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:03,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:07:03,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:03,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:03,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:03,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:07:03,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:03,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:07:03,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:03,956 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:03,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:07:03,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:03,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:07:03,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:03,964 INFO L134 CoverageAnalysis]: Checked inductivity of 590 backedges. 0 proven. 590 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:07:03,965 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1337896376] [2020-10-15 00:07:03,965 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:07:03,965 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-15 00:07:03,965 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936255125] [2020-10-15 00:07:03,965 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-15 00:07:03,965 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:07:03,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-15 00:07:03,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=257, Invalid=343, Unknown=0, NotChecked=0, Total=600 [2020-10-15 00:07:03,966 INFO L87 Difference]: Start difference. First operand 232 states and 308 transitions. Second operand 25 states. [2020-10-15 00:07:04,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:07:04,965 INFO L93 Difference]: Finished difference Result 482 states and 645 transitions. [2020-10-15 00:07:04,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-15 00:07:04,966 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 81 [2020-10-15 00:07:04,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:07:04,967 INFO L225 Difference]: With dead ends: 482 [2020-10-15 00:07:04,967 INFO L226 Difference]: Without dead ends: 262 [2020-10-15 00:07:04,968 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=765, Invalid=1397, Unknown=0, NotChecked=0, Total=2162 [2020-10-15 00:07:04,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2020-10-15 00:07:04,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 243. [2020-10-15 00:07:04,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2020-10-15 00:07:04,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 322 transitions. [2020-10-15 00:07:04,991 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 322 transitions. Word has length 81 [2020-10-15 00:07:04,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:07:04,991 INFO L479 AbstractCegarLoop]: Abstraction has 243 states and 322 transitions. [2020-10-15 00:07:04,991 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-15 00:07:04,991 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 322 transitions. [2020-10-15 00:07:04,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-15 00:07:04,992 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:07:04,992 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 19, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:07:04,993 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-15 00:07:04,993 INFO L427 AbstractCegarLoop]: === Iteration 42 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:07:04,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:07:04,993 INFO L82 PathProgramCache]: Analyzing trace with hash -1264963143, now seen corresponding path program 36 times [2020-10-15 00:07:04,993 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:07:04,993 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2121339598] [2020-10-15 00:07:04,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:07:05,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:05,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:05,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:05,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:05,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:05,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:05,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:05,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:05,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:05,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:05,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-15 00:07:05,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 00:07:05,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 716 [2020-10-15 00:07:05,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:05,719 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:05,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-15 00:07:05,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 00:07:05,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-15 00:07:05,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:06,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:07:06,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:06,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:06,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:06,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:07:06,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:06,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:07:06,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:06,153 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:06,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:07:06,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:06,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 00:07:06,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:06,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:07:06,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:06,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:06,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:06,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:07:06,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:06,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:07:06,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:06,157 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:06,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:07:06,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:06,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:07:06,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:06,164 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:07:06,165 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2121339598] [2020-10-15 00:07:06,165 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:07:06,165 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-15 00:07:06,165 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903129921] [2020-10-15 00:07:06,165 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-15 00:07:06,165 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:07:06,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-15 00:07:06,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=280, Invalid=370, Unknown=0, NotChecked=0, Total=650 [2020-10-15 00:07:06,166 INFO L87 Difference]: Start difference. First operand 243 states and 322 transitions. Second operand 26 states. [2020-10-15 00:07:07,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:07:07,054 INFO L93 Difference]: Finished difference Result 505 states and 675 transitions. [2020-10-15 00:07:07,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-15 00:07:07,055 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 84 [2020-10-15 00:07:07,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:07:07,056 INFO L225 Difference]: With dead ends: 505 [2020-10-15 00:07:07,056 INFO L226 Difference]: Without dead ends: 274 [2020-10-15 00:07:07,058 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 274 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=834, Invalid=1518, Unknown=0, NotChecked=0, Total=2352 [2020-10-15 00:07:07,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2020-10-15 00:07:07,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 255. [2020-10-15 00:07:07,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255 states. [2020-10-15 00:07:07,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 338 transitions. [2020-10-15 00:07:07,085 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 338 transitions. Word has length 84 [2020-10-15 00:07:07,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:07:07,085 INFO L479 AbstractCegarLoop]: Abstraction has 255 states and 338 transitions. [2020-10-15 00:07:07,085 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-15 00:07:07,086 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 338 transitions. [2020-10-15 00:07:07,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-15 00:07:07,086 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:07:07,086 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 19, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:07:07,087 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-15 00:07:07,087 INFO L427 AbstractCegarLoop]: === Iteration 43 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:07:07,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:07:07,087 INFO L82 PathProgramCache]: Analyzing trace with hash 147538409, now seen corresponding path program 37 times [2020-10-15 00:07:07,087 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:07:07,087 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1231077052] [2020-10-15 00:07:07,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:07:07,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:07,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:07,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:07,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:07,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:07,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:07,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:07,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:07,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:07,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:07,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:07,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:07,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:07,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:08,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:08,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-15 00:07:08,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-15 00:07:08,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1843 [2020-10-15 00:07:08,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:08,939 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:08,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-15 00:07:08,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 00:07:08,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-15 00:07:08,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:09,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:07:09,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:09,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:09,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:09,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:07:09,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:09,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:07:09,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:09,342 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:09,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:07:09,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:09,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 00:07:09,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:07:09,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:07:09,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:09,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:09,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:09,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:07:09,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:09,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:07:09,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:09,348 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:09,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:07:09,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:09,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:07:09,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:09,357 INFO L134 CoverageAnalysis]: Checked inductivity of 715 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-15 00:07:09,357 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1231077052] [2020-10-15 00:07:09,357 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:07:09,358 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-15 00:07:09,358 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495210385] [2020-10-15 00:07:09,358 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-15 00:07:09,358 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:07:09,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-15 00:07:09,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=239, Invalid=411, Unknown=0, NotChecked=0, Total=650 [2020-10-15 00:07:09,359 INFO L87 Difference]: Start difference. First operand 255 states and 338 transitions. Second operand 26 states. [2020-10-15 00:07:12,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:07:12,534 INFO L93 Difference]: Finished difference Result 633 states and 837 transitions. [2020-10-15 00:07:12,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2020-10-15 00:07:12,535 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 87 [2020-10-15 00:07:12,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:07:12,537 INFO L225 Difference]: With dead ends: 633 [2020-10-15 00:07:12,537 INFO L226 Difference]: Without dead ends: 390 [2020-10-15 00:07:12,538 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4009 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=3304, Invalid=8686, Unknown=0, NotChecked=0, Total=11990 [2020-10-15 00:07:12,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2020-10-15 00:07:12,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 252. [2020-10-15 00:07:12,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 252 states. [2020-10-15 00:07:12,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 334 transitions. [2020-10-15 00:07:12,568 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 334 transitions. Word has length 87 [2020-10-15 00:07:12,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:07:12,568 INFO L479 AbstractCegarLoop]: Abstraction has 252 states and 334 transitions. [2020-10-15 00:07:12,568 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-15 00:07:12,569 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 334 transitions. [2020-10-15 00:07:12,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-15 00:07:12,569 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:07:12,570 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 20, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:07:12,570 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-15 00:07:12,570 INFO L427 AbstractCegarLoop]: === Iteration 44 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:07:12,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:07:12,570 INFO L82 PathProgramCache]: Analyzing trace with hash -873529945, now seen corresponding path program 38 times [2020-10-15 00:07:12,571 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:07:12,571 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1720415052] [2020-10-15 00:07:12,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:07:12,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:12,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:12,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:12,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:12,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:12,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:12,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:13,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:13,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:13,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:13,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-15 00:07:13,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 00:07:13,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 793 [2020-10-15 00:07:13,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:13,373 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:13,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-15 00:07:13,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 00:07:13,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-15 00:07:13,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:13,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:07:13,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:13,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:13,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:13,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:07:13,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:13,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:07:13,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:13,832 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:13,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:07:13,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:13,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 00:07:13,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:07:13,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:07:13,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:13,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:13,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:13,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:07:13,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:13,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:07:13,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:13,836 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:13,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:07:13,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:13,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:07:13,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:13,845 INFO L134 CoverageAnalysis]: Checked inductivity of 715 backedges. 0 proven. 715 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:07:13,846 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1720415052] [2020-10-15 00:07:13,846 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:07:13,846 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-15 00:07:13,846 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156246660] [2020-10-15 00:07:13,846 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-15 00:07:13,846 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:07:13,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-15 00:07:13,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=304, Invalid=398, Unknown=0, NotChecked=0, Total=702 [2020-10-15 00:07:13,847 INFO L87 Difference]: Start difference. First operand 252 states and 334 transitions. Second operand 27 states. [2020-10-15 00:07:15,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:07:15,169 INFO L93 Difference]: Finished difference Result 523 states and 699 transitions. [2020-10-15 00:07:15,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-15 00:07:15,169 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 87 [2020-10-15 00:07:15,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:07:15,171 INFO L225 Difference]: With dead ends: 523 [2020-10-15 00:07:15,171 INFO L226 Difference]: Without dead ends: 283 [2020-10-15 00:07:15,172 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 298 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=906, Invalid=1644, Unknown=0, NotChecked=0, Total=2550 [2020-10-15 00:07:15,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2020-10-15 00:07:15,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 264. [2020-10-15 00:07:15,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 264 states. [2020-10-15 00:07:15,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 350 transitions. [2020-10-15 00:07:15,202 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 350 transitions. Word has length 87 [2020-10-15 00:07:15,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:07:15,203 INFO L479 AbstractCegarLoop]: Abstraction has 264 states and 350 transitions. [2020-10-15 00:07:15,203 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-15 00:07:15,203 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 350 transitions. [2020-10-15 00:07:15,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-15 00:07:15,204 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:07:15,204 INFO L422 BasicCegarLoop]: trace histogram [23, 23, 20, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:07:15,204 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-15 00:07:15,204 INFO L427 AbstractCegarLoop]: === Iteration 45 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:07:15,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:07:15,205 INFO L82 PathProgramCache]: Analyzing trace with hash 497731387, now seen corresponding path program 39 times [2020-10-15 00:07:15,205 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:07:15,205 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1247699751] [2020-10-15 00:07:15,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:07:15,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:15,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:15,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:15,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:15,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:15,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:15,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:16,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:16,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:16,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:16,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:16,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:16,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:16,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:17,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:17,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-15 00:07:17,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-15 00:07:17,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2011 [2020-10-15 00:07:17,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:17,226 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:17,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-15 00:07:17,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 00:07:17,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-15 00:07:17,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:17,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:07:17,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:17,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:17,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:17,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:07:17,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:17,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:07:17,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:17,648 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:17,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:07:17,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:17,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 00:07:17,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:17,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:07:17,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:17,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:17,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:17,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:07:17,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:17,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:07:17,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:17,653 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:17,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:07:17,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:17,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:07:17,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:17,662 INFO L134 CoverageAnalysis]: Checked inductivity of 782 backedges. 0 proven. 775 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-15 00:07:17,662 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1247699751] [2020-10-15 00:07:17,663 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:07:17,663 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-15 00:07:17,663 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336172702] [2020-10-15 00:07:17,663 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-15 00:07:17,663 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:07:17,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-15 00:07:17,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=261, Invalid=441, Unknown=0, NotChecked=0, Total=702 [2020-10-15 00:07:17,664 INFO L87 Difference]: Start difference. First operand 264 states and 350 transitions. Second operand 27 states. [2020-10-15 00:07:19,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:07:19,374 INFO L93 Difference]: Finished difference Result 627 states and 835 transitions. [2020-10-15 00:07:19,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2020-10-15 00:07:19,374 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 90 [2020-10-15 00:07:19,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:07:19,376 INFO L225 Difference]: With dead ends: 627 [2020-10-15 00:07:19,376 INFO L226 Difference]: Without dead ends: 375 [2020-10-15 00:07:19,378 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1091 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1563, Invalid=3693, Unknown=0, NotChecked=0, Total=5256 [2020-10-15 00:07:19,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2020-10-15 00:07:19,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 181. [2020-10-15 00:07:19,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2020-10-15 00:07:19,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 238 transitions. [2020-10-15 00:07:19,421 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 238 transitions. Word has length 90 [2020-10-15 00:07:19,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:07:19,421 INFO L479 AbstractCegarLoop]: Abstraction has 181 states and 238 transitions. [2020-10-15 00:07:19,421 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-15 00:07:19,421 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 238 transitions. [2020-10-15 00:07:19,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-15 00:07:19,422 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:07:19,422 INFO L422 BasicCegarLoop]: trace histogram [23, 23, 21, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:07:19,422 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-15 00:07:19,423 INFO L427 AbstractCegarLoop]: === Iteration 46 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:07:19,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:07:19,423 INFO L82 PathProgramCache]: Analyzing trace with hash -523336967, now seen corresponding path program 40 times [2020-10-15 00:07:19,423 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:07:19,423 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2128409103] [2020-10-15 00:07:19,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:07:19,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:19,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:19,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:19,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:19,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:19,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:19,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:19,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:20,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:20,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:20,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-15 00:07:20,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 00:07:20,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 688 [2020-10-15 00:07:20,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:20,121 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:20,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-15 00:07:20,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 00:07:20,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-15 00:07:20,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:20,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:07:20,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:20,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:20,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:20,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:07:20,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:20,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:07:20,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:20,674 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:20,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:07:20,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:20,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 00:07:20,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:20,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:07:20,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:20,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:20,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:20,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:07:20,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:20,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:07:20,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:20,678 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:20,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:07:20,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:20,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:07:20,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:20,688 INFO L134 CoverageAnalysis]: Checked inductivity of 782 backedges. 0 proven. 780 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 00:07:20,688 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2128409103] [2020-10-15 00:07:20,688 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:07:20,689 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-15 00:07:20,689 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957117267] [2020-10-15 00:07:20,689 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-15 00:07:20,689 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:07:20,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-15 00:07:20,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=284, Invalid=472, Unknown=0, NotChecked=0, Total=756 [2020-10-15 00:07:20,690 INFO L87 Difference]: Start difference. First operand 181 states and 238 transitions. Second operand 28 states. [2020-10-15 00:07:22,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:07:22,883 INFO L93 Difference]: Finished difference Result 444 states and 591 transitions. [2020-10-15 00:07:22,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2020-10-15 00:07:22,883 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 90 [2020-10-15 00:07:22,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:07:22,885 INFO L225 Difference]: With dead ends: 444 [2020-10-15 00:07:22,885 INFO L226 Difference]: Without dead ends: 275 [2020-10-15 00:07:22,886 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1187 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1702, Invalid=3998, Unknown=0, NotChecked=0, Total=5700 [2020-10-15 00:07:22,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2020-10-15 00:07:22,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 179. [2020-10-15 00:07:22,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2020-10-15 00:07:22,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 236 transitions. [2020-10-15 00:07:22,917 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 236 transitions. Word has length 90 [2020-10-15 00:07:22,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:07:22,919 INFO L479 AbstractCegarLoop]: Abstraction has 179 states and 236 transitions. [2020-10-15 00:07:22,919 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-15 00:07:22,919 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 236 transitions. [2020-10-15 00:07:22,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-15 00:07:22,920 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:07:22,920 INFO L422 BasicCegarLoop]: trace histogram [23, 23, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:07:22,920 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-10-15 00:07:22,920 INFO L427 AbstractCegarLoop]: === Iteration 47 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:07:22,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:07:22,921 INFO L82 PathProgramCache]: Analyzing trace with hash -1110142981, now seen corresponding path program 41 times [2020-10-15 00:07:22,921 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:07:22,921 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [246874042] [2020-10-15 00:07:22,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:07:22,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:22,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:22,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:23,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:23,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:23,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:23,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:23,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-15 00:07:23,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 00:07:23,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 787 [2020-10-15 00:07:23,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:23,718 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:23,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-15 00:07:23,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 00:07:23,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-15 00:07:23,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:24,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:07:24,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:24,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:24,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:24,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:07:24,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:24,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:07:24,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:24,228 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:24,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:07:24,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:24,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 00:07:24,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:24,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:07:24,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:24,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:24,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:24,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:07:24,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:24,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:07:24,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:24,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:24,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:07:24,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:24,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:07:24,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:24,241 INFO L134 CoverageAnalysis]: Checked inductivity of 782 backedges. 0 proven. 782 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:07:24,241 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [246874042] [2020-10-15 00:07:24,241 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:07:24,242 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-15 00:07:24,242 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170084278] [2020-10-15 00:07:24,242 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-15 00:07:24,242 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:07:24,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-15 00:07:24,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=329, Invalid=427, Unknown=0, NotChecked=0, Total=756 [2020-10-15 00:07:24,242 INFO L87 Difference]: Start difference. First operand 179 states and 236 transitions. Second operand 28 states. [2020-10-15 00:07:25,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:07:25,107 INFO L93 Difference]: Finished difference Result 366 states and 488 transitions. [2020-10-15 00:07:25,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 00:07:25,107 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 90 [2020-10-15 00:07:25,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:07:25,108 INFO L225 Difference]: With dead ends: 366 [2020-10-15 00:07:25,108 INFO L226 Difference]: Without dead ends: 199 [2020-10-15 00:07:25,109 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=981, Invalid=1775, Unknown=0, NotChecked=0, Total=2756 [2020-10-15 00:07:25,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2020-10-15 00:07:25,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 187. [2020-10-15 00:07:25,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2020-10-15 00:07:25,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 246 transitions. [2020-10-15 00:07:25,138 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 246 transitions. Word has length 90 [2020-10-15 00:07:25,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:07:25,138 INFO L479 AbstractCegarLoop]: Abstraction has 187 states and 246 transitions. [2020-10-15 00:07:25,139 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-15 00:07:25,139 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 246 transitions. [2020-10-15 00:07:25,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-15 00:07:25,139 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:07:25,140 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 22, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:07:25,140 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-10-15 00:07:25,140 INFO L427 AbstractCegarLoop]: === Iteration 48 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:07:25,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:07:25,140 INFO L82 PathProgramCache]: Analyzing trace with hash -399891353, now seen corresponding path program 42 times [2020-10-15 00:07:25,140 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:07:25,141 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [264256434] [2020-10-15 00:07:25,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:07:25,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:25,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:25,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:25,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:25,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:25,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:25,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:25,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:25,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:25,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:25,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-15 00:07:25,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 00:07:25,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 733 [2020-10-15 00:07:25,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:25,881 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:25,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-15 00:07:25,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 00:07:25,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-15 00:07:25,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:26,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:07:26,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:26,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:26,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:26,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:07:26,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:26,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:07:26,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:26,419 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:26,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:07:26,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:26,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 00:07:26,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:26,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:07:26,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:26,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:26,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:26,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:07:26,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:26,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:07:26,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:26,424 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:26,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:07:26,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:26,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:07:26,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:26,436 INFO L134 CoverageAnalysis]: Checked inductivity of 852 backedges. 0 proven. 852 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:07:26,436 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [264256434] [2020-10-15 00:07:26,437 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:07:26,437 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-15 00:07:26,437 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172910780] [2020-10-15 00:07:26,437 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-15 00:07:26,437 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:07:26,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-15 00:07:26,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=355, Invalid=457, Unknown=0, NotChecked=0, Total=812 [2020-10-15 00:07:26,438 INFO L87 Difference]: Start difference. First operand 187 states and 246 transitions. Second operand 29 states. [2020-10-15 00:07:27,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:07:27,722 INFO L93 Difference]: Finished difference Result 383 states and 510 transitions. [2020-10-15 00:07:27,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-15 00:07:27,723 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 93 [2020-10-15 00:07:27,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:07:27,724 INFO L225 Difference]: With dead ends: 383 [2020-10-15 00:07:27,724 INFO L226 Difference]: Without dead ends: 208 [2020-10-15 00:07:27,725 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 349 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1059, Invalid=1911, Unknown=0, NotChecked=0, Total=2970 [2020-10-15 00:07:27,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2020-10-15 00:07:27,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 196. [2020-10-15 00:07:27,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-10-15 00:07:27,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 258 transitions. [2020-10-15 00:07:27,747 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 258 transitions. Word has length 93 [2020-10-15 00:07:27,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:07:27,747 INFO L479 AbstractCegarLoop]: Abstraction has 196 states and 258 transitions. [2020-10-15 00:07:27,747 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-15 00:07:27,748 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 258 transitions. [2020-10-15 00:07:27,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-15 00:07:27,748 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:07:27,749 INFO L422 BasicCegarLoop]: trace histogram [25, 25, 22, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:07:27,749 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-10-15 00:07:27,749 INFO L427 AbstractCegarLoop]: === Iteration 49 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:07:27,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:07:27,749 INFO L82 PathProgramCache]: Analyzing trace with hash 1697458299, now seen corresponding path program 43 times [2020-10-15 00:07:27,749 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:07:27,749 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1698972947] [2020-10-15 00:07:27,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:07:27,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:27,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:27,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:27,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:27,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:27,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:27,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:28,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:28,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:28,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:28,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:28,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:28,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:28,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:29,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:29,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-15 00:07:29,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-15 00:07:29,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1523 [2020-10-15 00:07:29,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:29,281 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:29,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-15 00:07:29,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 00:07:29,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-15 00:07:29,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:29,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:07:29,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:29,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:29,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:29,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:07:29,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:29,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:07:29,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:29,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:29,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:07:29,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:29,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 00:07:29,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:29,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:07:29,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:29,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:29,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:29,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:07:29,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:29,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:07:29,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:29,799 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:29,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:07:29,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:29,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:07:29,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:29,811 INFO L134 CoverageAnalysis]: Checked inductivity of 925 backedges. 0 proven. 918 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-15 00:07:29,811 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1698972947] [2020-10-15 00:07:29,811 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:07:29,811 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-15 00:07:29,811 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311579618] [2020-10-15 00:07:29,812 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-15 00:07:29,812 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:07:29,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-15 00:07:29,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=308, Invalid=504, Unknown=0, NotChecked=0, Total=812 [2020-10-15 00:07:29,812 INFO L87 Difference]: Start difference. First operand 196 states and 258 transitions. Second operand 29 states. [2020-10-15 00:07:32,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:07:32,212 INFO L93 Difference]: Finished difference Result 489 states and 649 transitions. [2020-10-15 00:07:32,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2020-10-15 00:07:32,213 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 96 [2020-10-15 00:07:32,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:07:32,215 INFO L225 Difference]: With dead ends: 489 [2020-10-15 00:07:32,215 INFO L226 Difference]: Without dead ends: 305 [2020-10-15 00:07:32,216 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1287 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1847, Invalid=4315, Unknown=0, NotChecked=0, Total=6162 [2020-10-15 00:07:32,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2020-10-15 00:07:32,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 193. [2020-10-15 00:07:32,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2020-10-15 00:07:32,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 254 transitions. [2020-10-15 00:07:32,248 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 254 transitions. Word has length 96 [2020-10-15 00:07:32,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:07:32,248 INFO L479 AbstractCegarLoop]: Abstraction has 193 states and 254 transitions. [2020-10-15 00:07:32,248 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-15 00:07:32,248 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 254 transitions. [2020-10-15 00:07:32,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-15 00:07:32,249 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:07:32,249 INFO L422 BasicCegarLoop]: trace histogram [25, 25, 23, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:07:32,250 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-10-15 00:07:32,250 INFO L427 AbstractCegarLoop]: === Iteration 50 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:07:32,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:07:32,250 INFO L82 PathProgramCache]: Analyzing trace with hash 676389945, now seen corresponding path program 44 times [2020-10-15 00:07:32,250 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:07:32,251 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1661651167] [2020-10-15 00:07:32,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:07:32,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:32,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:32,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:32,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:32,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:32,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:32,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:32,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:32,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:33,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:33,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-15 00:07:33,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 00:07:33,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 807 [2020-10-15 00:07:33,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:33,066 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:33,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-15 00:07:33,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 00:07:33,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-15 00:07:33,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:33,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:07:33,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:33,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:33,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:33,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:07:33,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:33,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:07:33,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:33,622 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:33,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:07:33,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:33,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 00:07:33,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:33,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:07:33,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:33,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:33,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:33,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:07:33,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:33,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:07:33,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:33,626 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:33,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:07:33,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:33,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:07:33,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:33,637 INFO L134 CoverageAnalysis]: Checked inductivity of 925 backedges. 0 proven. 923 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 00:07:33,637 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1661651167] [2020-10-15 00:07:33,637 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:07:33,637 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-15 00:07:33,637 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795142512] [2020-10-15 00:07:33,638 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-15 00:07:33,638 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:07:33,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-15 00:07:33,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=333, Invalid=537, Unknown=0, NotChecked=0, Total=870 [2020-10-15 00:07:33,638 INFO L87 Difference]: Start difference. First operand 193 states and 254 transitions. Second operand 30 states. [2020-10-15 00:07:36,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:07:36,178 INFO L93 Difference]: Finished difference Result 474 states and 631 transitions. [2020-10-15 00:07:36,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2020-10-15 00:07:36,178 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 96 [2020-10-15 00:07:36,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:07:36,180 INFO L225 Difference]: With dead ends: 474 [2020-10-15 00:07:36,180 INFO L226 Difference]: Without dead ends: 293 [2020-10-15 00:07:36,181 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1391 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1998, Invalid=4644, Unknown=0, NotChecked=0, Total=6642 [2020-10-15 00:07:36,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2020-10-15 00:07:36,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 191. [2020-10-15 00:07:36,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2020-10-15 00:07:36,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 252 transitions. [2020-10-15 00:07:36,212 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 252 transitions. Word has length 96 [2020-10-15 00:07:36,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:07:36,213 INFO L479 AbstractCegarLoop]: Abstraction has 191 states and 252 transitions. [2020-10-15 00:07:36,213 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-15 00:07:36,213 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 252 transitions. [2020-10-15 00:07:36,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-15 00:07:36,213 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:07:36,214 INFO L422 BasicCegarLoop]: trace histogram [25, 25, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:07:36,214 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2020-10-15 00:07:36,214 INFO L427 AbstractCegarLoop]: === Iteration 51 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:07:36,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:07:36,214 INFO L82 PathProgramCache]: Analyzing trace with hash 89583931, now seen corresponding path program 45 times [2020-10-15 00:07:36,214 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:07:36,214 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1802221203] [2020-10-15 00:07:36,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:07:36,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:36,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:36,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:36,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:36,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:36,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:36,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:36,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-15 00:07:36,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 00:07:36,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 695 [2020-10-15 00:07:36,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:36,917 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:36,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-15 00:07:36,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 00:07:36,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-15 00:07:36,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:37,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:07:37,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:37,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:37,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:37,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:07:37,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:37,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:07:37,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:37,511 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:37,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:07:37,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:37,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 00:07:37,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:37,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:07:37,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:37,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:37,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:37,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:07:37,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:37,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:07:37,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:37,514 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:37,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:07:37,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:37,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:07:37,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:37,526 INFO L134 CoverageAnalysis]: Checked inductivity of 925 backedges. 0 proven. 925 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:07:37,526 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1802221203] [2020-10-15 00:07:37,526 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:07:37,526 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-15 00:07:37,527 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972711899] [2020-10-15 00:07:37,527 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-15 00:07:37,527 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:07:37,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-15 00:07:37,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=382, Invalid=488, Unknown=0, NotChecked=0, Total=870 [2020-10-15 00:07:37,527 INFO L87 Difference]: Start difference. First operand 191 states and 252 transitions. Second operand 30 states. [2020-10-15 00:07:39,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:07:39,031 INFO L93 Difference]: Finished difference Result 390 states and 520 transitions. [2020-10-15 00:07:39,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-15 00:07:39,032 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 96 [2020-10-15 00:07:39,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:07:39,034 INFO L225 Difference]: With dead ends: 390 [2020-10-15 00:07:39,034 INFO L226 Difference]: Without dead ends: 211 [2020-10-15 00:07:39,036 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 376 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1140, Invalid=2052, Unknown=0, NotChecked=0, Total=3192 [2020-10-15 00:07:39,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2020-10-15 00:07:39,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 199. [2020-10-15 00:07:39,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2020-10-15 00:07:39,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 262 transitions. [2020-10-15 00:07:39,077 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 262 transitions. Word has length 96 [2020-10-15 00:07:39,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:07:39,077 INFO L479 AbstractCegarLoop]: Abstraction has 199 states and 262 transitions. [2020-10-15 00:07:39,077 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-15 00:07:39,078 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 262 transitions. [2020-10-15 00:07:39,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-15 00:07:39,079 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:07:39,080 INFO L422 BasicCegarLoop]: trace histogram [26, 26, 24, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:07:39,080 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2020-10-15 00:07:39,080 INFO L427 AbstractCegarLoop]: === Iteration 52 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:07:39,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:07:39,080 INFO L82 PathProgramCache]: Analyzing trace with hash -2053293273, now seen corresponding path program 46 times [2020-10-15 00:07:39,082 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:07:39,082 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [710368831] [2020-10-15 00:07:39,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:07:39,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:39,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:39,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:39,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:39,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:39,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:39,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:39,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:39,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:40,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:40,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-15 00:07:40,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 00:07:40,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 928 [2020-10-15 00:07:40,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:40,022 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:40,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-15 00:07:40,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 00:07:40,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-15 00:07:40,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:40,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:07:40,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:40,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:40,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:40,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:07:40,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:40,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:07:40,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:40,636 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:40,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:07:40,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:40,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 00:07:40,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:40,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:07:40,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:40,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:40,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:40,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:07:40,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:40,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:07:40,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:40,640 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:40,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:07:40,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:40,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:07:40,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:40,652 INFO L134 CoverageAnalysis]: Checked inductivity of 1001 backedges. 0 proven. 1001 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:07:40,652 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [710368831] [2020-10-15 00:07:40,653 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:07:40,653 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-15 00:07:40,653 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596237157] [2020-10-15 00:07:40,653 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-15 00:07:40,653 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:07:40,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-15 00:07:40,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=410, Invalid=520, Unknown=0, NotChecked=0, Total=930 [2020-10-15 00:07:40,654 INFO L87 Difference]: Start difference. First operand 199 states and 262 transitions. Second operand 31 states. [2020-10-15 00:07:42,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:07:42,143 INFO L93 Difference]: Finished difference Result 407 states and 542 transitions. [2020-10-15 00:07:42,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-15 00:07:42,144 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 99 [2020-10-15 00:07:42,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:07:42,145 INFO L225 Difference]: With dead ends: 407 [2020-10-15 00:07:42,145 INFO L226 Difference]: Without dead ends: 220 [2020-10-15 00:07:42,146 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 404 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1224, Invalid=2198, Unknown=0, NotChecked=0, Total=3422 [2020-10-15 00:07:42,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2020-10-15 00:07:42,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 208. [2020-10-15 00:07:42,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 208 states. [2020-10-15 00:07:42,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 274 transitions. [2020-10-15 00:07:42,180 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 274 transitions. Word has length 99 [2020-10-15 00:07:42,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:07:42,181 INFO L479 AbstractCegarLoop]: Abstraction has 208 states and 274 transitions. [2020-10-15 00:07:42,181 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-15 00:07:42,181 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 274 transitions. [2020-10-15 00:07:42,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-15 00:07:42,182 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:07:42,182 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 24, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:07:42,182 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2020-10-15 00:07:42,182 INFO L427 AbstractCegarLoop]: === Iteration 53 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:07:42,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:07:42,183 INFO L82 PathProgramCache]: Analyzing trace with hash -114189893, now seen corresponding path program 47 times [2020-10-15 00:07:42,183 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:07:42,183 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [120615029] [2020-10-15 00:07:42,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:07:42,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:42,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:42,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:42,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:42,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:42,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:42,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:42,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:42,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:42,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:42,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:42,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:42,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:43,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:43,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:43,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-15 00:07:43,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-15 00:07:43,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1460 [2020-10-15 00:07:43,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:43,654 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:43,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-15 00:07:43,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 00:07:43,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-15 00:07:43,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:44,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:07:44,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:44,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:44,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:44,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:07:44,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:44,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:07:44,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:44,263 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:44,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:07:44,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:44,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 00:07:44,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:44,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:07:44,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:44,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:44,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:44,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:07:44,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:44,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:07:44,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:44,267 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:44,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:07:44,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:44,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:07:44,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:44,279 INFO L134 CoverageAnalysis]: Checked inductivity of 1080 backedges. 0 proven. 1073 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-15 00:07:44,279 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [120615029] [2020-10-15 00:07:44,279 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:07:44,279 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-15 00:07:44,280 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637966640] [2020-10-15 00:07:44,280 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-15 00:07:44,280 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:07:44,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-15 00:07:44,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=359, Invalid=571, Unknown=0, NotChecked=0, Total=930 [2020-10-15 00:07:44,280 INFO L87 Difference]: Start difference. First operand 208 states and 274 transitions. Second operand 31 states. [2020-10-15 00:07:47,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:07:47,010 INFO L93 Difference]: Finished difference Result 519 states and 689 transitions. [2020-10-15 00:07:47,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2020-10-15 00:07:47,011 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 102 [2020-10-15 00:07:47,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:07:47,012 INFO L225 Difference]: With dead ends: 519 [2020-10-15 00:07:47,012 INFO L226 Difference]: Without dead ends: 323 [2020-10-15 00:07:47,014 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1499 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=2155, Invalid=4985, Unknown=0, NotChecked=0, Total=7140 [2020-10-15 00:07:47,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2020-10-15 00:07:47,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 205. [2020-10-15 00:07:47,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2020-10-15 00:07:47,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 270 transitions. [2020-10-15 00:07:47,050 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 270 transitions. Word has length 102 [2020-10-15 00:07:47,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:07:47,050 INFO L479 AbstractCegarLoop]: Abstraction has 205 states and 270 transitions. [2020-10-15 00:07:47,051 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-15 00:07:47,051 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 270 transitions. [2020-10-15 00:07:47,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-15 00:07:47,052 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:07:47,052 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 25, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:07:47,052 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2020-10-15 00:07:47,052 INFO L427 AbstractCegarLoop]: === Iteration 54 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:07:47,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:07:47,053 INFO L82 PathProgramCache]: Analyzing trace with hash -1135258247, now seen corresponding path program 48 times [2020-10-15 00:07:47,053 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:07:47,053 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [403008950] [2020-10-15 00:07:47,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:07:47,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:47,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:47,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:47,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:47,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:47,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:47,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:47,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:47,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:48,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:48,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-15 00:07:48,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 00:07:48,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 999 [2020-10-15 00:07:48,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:48,064 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:48,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-15 00:07:48,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 00:07:48,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-15 00:07:48,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:48,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:07:48,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:48,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:48,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:48,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:07:48,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:48,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:07:48,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:48,744 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:48,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:07:48,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:48,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 00:07:48,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:48,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:07:48,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:48,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:48,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:48,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:07:48,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:48,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:07:48,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:48,747 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:48,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:07:48,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:48,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:07:48,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:48,759 INFO L134 CoverageAnalysis]: Checked inductivity of 1080 backedges. 0 proven. 1080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:07:48,759 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [403008950] [2020-10-15 00:07:48,760 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:07:48,760 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-15 00:07:48,760 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674391725] [2020-10-15 00:07:48,760 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-15 00:07:48,760 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:07:48,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-15 00:07:48,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=439, Invalid=553, Unknown=0, NotChecked=0, Total=992 [2020-10-15 00:07:48,761 INFO L87 Difference]: Start difference. First operand 205 states and 270 transitions. Second operand 32 states. [2020-10-15 00:07:50,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:07:50,319 INFO L93 Difference]: Finished difference Result 419 states and 558 transitions. [2020-10-15 00:07:50,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-15 00:07:50,320 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 102 [2020-10-15 00:07:50,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:07:50,321 INFO L225 Difference]: With dead ends: 419 [2020-10-15 00:07:50,321 INFO L226 Difference]: Without dead ends: 226 [2020-10-15 00:07:50,322 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 433 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1311, Invalid=2349, Unknown=0, NotChecked=0, Total=3660 [2020-10-15 00:07:50,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-10-15 00:07:50,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 214. [2020-10-15 00:07:50,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2020-10-15 00:07:50,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 282 transitions. [2020-10-15 00:07:50,360 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 282 transitions. Word has length 102 [2020-10-15 00:07:50,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:07:50,361 INFO L479 AbstractCegarLoop]: Abstraction has 214 states and 282 transitions. [2020-10-15 00:07:50,361 INFO L480 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-15 00:07:50,361 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 282 transitions. [2020-10-15 00:07:50,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-15 00:07:50,362 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:07:50,362 INFO L422 BasicCegarLoop]: trace histogram [28, 28, 25, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:07:50,362 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2020-10-15 00:07:50,362 INFO L427 AbstractCegarLoop]: === Iteration 55 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:07:50,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:07:50,362 INFO L82 PathProgramCache]: Analyzing trace with hash -1284471255, now seen corresponding path program 49 times [2020-10-15 00:07:50,363 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:07:50,363 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [85466539] [2020-10-15 00:07:50,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:07:50,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:50,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:50,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:50,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:50,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:50,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:50,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:50,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:50,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:50,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:50,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:50,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:50,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:51,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:52,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:52,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-15 00:07:52,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-15 00:07:52,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1636 [2020-10-15 00:07:52,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:52,010 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:52,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-15 00:07:52,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 00:07:52,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-15 00:07:52,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:52,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:07:52,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:52,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:52,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:52,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:07:52,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:52,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:07:52,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:52,656 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:52,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:07:52,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:52,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 00:07:52,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:52,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:07:52,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:52,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:52,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:52,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:07:52,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:52,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:07:52,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:52,661 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:52,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:07:52,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:52,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:07:52,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:52,675 INFO L134 CoverageAnalysis]: Checked inductivity of 1162 backedges. 0 proven. 1155 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-15 00:07:52,676 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [85466539] [2020-10-15 00:07:52,676 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:07:52,676 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-15 00:07:52,676 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69300550] [2020-10-15 00:07:52,676 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-15 00:07:52,676 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:07:52,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-15 00:07:52,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=386, Invalid=606, Unknown=0, NotChecked=0, Total=992 [2020-10-15 00:07:52,677 INFO L87 Difference]: Start difference. First operand 214 states and 282 transitions. Second operand 32 states. [2020-10-15 00:07:55,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:07:55,247 INFO L93 Difference]: Finished difference Result 534 states and 709 transitions. [2020-10-15 00:07:55,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2020-10-15 00:07:55,248 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 105 [2020-10-15 00:07:55,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:07:55,249 INFO L225 Difference]: With dead ends: 534 [2020-10-15 00:07:55,249 INFO L226 Difference]: Without dead ends: 332 [2020-10-15 00:07:55,251 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1611 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=2318, Invalid=5338, Unknown=0, NotChecked=0, Total=7656 [2020-10-15 00:07:55,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2020-10-15 00:07:55,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 211. [2020-10-15 00:07:55,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2020-10-15 00:07:55,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 278 transitions. [2020-10-15 00:07:55,277 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 278 transitions. Word has length 105 [2020-10-15 00:07:55,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:07:55,277 INFO L479 AbstractCegarLoop]: Abstraction has 211 states and 278 transitions. [2020-10-15 00:07:55,277 INFO L480 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-15 00:07:55,277 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 278 transitions. [2020-10-15 00:07:55,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-15 00:07:55,278 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:07:55,278 INFO L422 BasicCegarLoop]: trace histogram [28, 28, 26, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:07:55,279 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2020-10-15 00:07:55,279 INFO L427 AbstractCegarLoop]: === Iteration 56 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:07:55,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:07:55,279 INFO L82 PathProgramCache]: Analyzing trace with hash 1989427687, now seen corresponding path program 50 times [2020-10-15 00:07:55,279 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:07:55,279 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1801284395] [2020-10-15 00:07:55,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:07:55,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:55,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:55,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:55,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:55,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:55,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:55,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:55,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:55,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:56,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:56,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-15 00:07:56,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 00:07:56,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 970 [2020-10-15 00:07:56,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:56,260 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:56,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-15 00:07:56,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 00:07:56,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-15 00:07:56,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:56,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:07:57,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:57,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:57,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:57,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:07:57,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:57,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:07:57,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:57,003 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:57,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:07:57,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:57,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 00:07:57,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:57,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:07:57,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:57,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:57,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:57,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:07:57,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:57,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:07:57,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:57,007 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:57,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:07:57,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:57,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:07:57,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:57,020 INFO L134 CoverageAnalysis]: Checked inductivity of 1162 backedges. 0 proven. 1162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:07:57,020 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1801284395] [2020-10-15 00:07:57,020 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:07:57,020 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-10-15 00:07:57,020 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648063658] [2020-10-15 00:07:57,020 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-10-15 00:07:57,020 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:07:57,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-10-15 00:07:57,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=469, Invalid=587, Unknown=0, NotChecked=0, Total=1056 [2020-10-15 00:07:57,021 INFO L87 Difference]: Start difference. First operand 211 states and 278 transitions. Second operand 33 states. [2020-10-15 00:07:58,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:07:58,373 INFO L93 Difference]: Finished difference Result 431 states and 574 transitions. [2020-10-15 00:07:58,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-15 00:07:58,374 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 105 [2020-10-15 00:07:58,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:07:58,375 INFO L225 Difference]: With dead ends: 431 [2020-10-15 00:07:58,375 INFO L226 Difference]: Without dead ends: 232 [2020-10-15 00:07:58,376 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 463 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1401, Invalid=2505, Unknown=0, NotChecked=0, Total=3906 [2020-10-15 00:07:58,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2020-10-15 00:07:58,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 220. [2020-10-15 00:07:58,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2020-10-15 00:07:58,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 290 transitions. [2020-10-15 00:07:58,416 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 290 transitions. Word has length 105 [2020-10-15 00:07:58,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:07:58,416 INFO L479 AbstractCegarLoop]: Abstraction has 220 states and 290 transitions. [2020-10-15 00:07:58,416 INFO L480 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-10-15 00:07:58,416 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 290 transitions. [2020-10-15 00:07:58,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-15 00:07:58,417 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:07:58,418 INFO L422 BasicCegarLoop]: trace histogram [29, 29, 26, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:07:58,418 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2020-10-15 00:07:58,418 INFO L427 AbstractCegarLoop]: === Iteration 57 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:07:58,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:07:58,418 INFO L82 PathProgramCache]: Analyzing trace with hash 1407982331, now seen corresponding path program 51 times [2020-10-15 00:07:58,418 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:07:58,419 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2118137227] [2020-10-15 00:07:58,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:07:58,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:58,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:58,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:58,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:58,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:58,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:58,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:58,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:58,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:59,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:59,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:59,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:59,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:59,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:00,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:00,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-15 00:08:00,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-15 00:08:00,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1613 [2020-10-15 00:08:00,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:00,042 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:00,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-15 00:08:00,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 00:08:00,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-15 00:08:00,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:00,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:08:00,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:00,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:00,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:00,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:08:00,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:00,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:08:00,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:00,756 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:00,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:08:00,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:00,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 00:08:00,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:00,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:08:00,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:00,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:00,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:00,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:08:00,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:00,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:08:00,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:00,759 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:00,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:08:00,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:00,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:08:00,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:00,772 INFO L134 CoverageAnalysis]: Checked inductivity of 1247 backedges. 0 proven. 1240 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-15 00:08:00,773 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2118137227] [2020-10-15 00:08:00,773 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:08:00,773 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-10-15 00:08:00,773 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838122146] [2020-10-15 00:08:00,773 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-10-15 00:08:00,773 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:08:00,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-10-15 00:08:00,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=414, Invalid=642, Unknown=0, NotChecked=0, Total=1056 [2020-10-15 00:08:00,774 INFO L87 Difference]: Start difference. First operand 220 states and 290 transitions. Second operand 33 states. [2020-10-15 00:08:03,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:08:03,796 INFO L93 Difference]: Finished difference Result 549 states and 729 transitions. [2020-10-15 00:08:03,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2020-10-15 00:08:03,797 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 108 [2020-10-15 00:08:03,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:08:03,798 INFO L225 Difference]: With dead ends: 549 [2020-10-15 00:08:03,798 INFO L226 Difference]: Without dead ends: 341 [2020-10-15 00:08:03,799 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1727 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=2487, Invalid=5703, Unknown=0, NotChecked=0, Total=8190 [2020-10-15 00:08:03,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2020-10-15 00:08:03,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 217. [2020-10-15 00:08:03,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2020-10-15 00:08:03,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 286 transitions. [2020-10-15 00:08:03,840 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 286 transitions. Word has length 108 [2020-10-15 00:08:03,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:08:03,841 INFO L479 AbstractCegarLoop]: Abstraction has 217 states and 286 transitions. [2020-10-15 00:08:03,841 INFO L480 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-10-15 00:08:03,841 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 286 transitions. [2020-10-15 00:08:03,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-15 00:08:03,842 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:08:03,842 INFO L422 BasicCegarLoop]: trace histogram [29, 29, 27, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:08:03,842 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2020-10-15 00:08:03,842 INFO L427 AbstractCegarLoop]: === Iteration 58 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:08:03,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:08:03,843 INFO L82 PathProgramCache]: Analyzing trace with hash 386913977, now seen corresponding path program 52 times [2020-10-15 00:08:03,843 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:08:03,843 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1745815114] [2020-10-15 00:08:03,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:08:03,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:03,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:03,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:03,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:04,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:04,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:04,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:04,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:04,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:05,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:05,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-15 00:08:05,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 00:08:05,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1282 [2020-10-15 00:08:05,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:05,137 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:05,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-15 00:08:05,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 00:08:05,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-15 00:08:05,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:05,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:08:05,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:05,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:05,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:05,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:08:05,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:05,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:08:05,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:05,909 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:05,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:08:05,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:05,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 00:08:05,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:05,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:08:05,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:05,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:05,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:05,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:08:05,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:05,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:08:05,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:05,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:05,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:08:05,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:05,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:08:05,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:05,925 INFO L134 CoverageAnalysis]: Checked inductivity of 1247 backedges. 0 proven. 1247 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:08:05,926 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1745815114] [2020-10-15 00:08:05,926 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:08:05,926 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-10-15 00:08:05,926 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204911720] [2020-10-15 00:08:05,926 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-15 00:08:05,926 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:08:05,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-15 00:08:05,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=500, Invalid=622, Unknown=0, NotChecked=0, Total=1122 [2020-10-15 00:08:05,927 INFO L87 Difference]: Start difference. First operand 217 states and 286 transitions. Second operand 34 states. [2020-10-15 00:08:07,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:08:07,676 INFO L93 Difference]: Finished difference Result 443 states and 590 transitions. [2020-10-15 00:08:07,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-15 00:08:07,677 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 108 [2020-10-15 00:08:07,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:08:07,678 INFO L225 Difference]: With dead ends: 443 [2020-10-15 00:08:07,678 INFO L226 Difference]: Without dead ends: 238 [2020-10-15 00:08:07,679 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 494 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1494, Invalid=2666, Unknown=0, NotChecked=0, Total=4160 [2020-10-15 00:08:07,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2020-10-15 00:08:07,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 226. [2020-10-15 00:08:07,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-10-15 00:08:07,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 298 transitions. [2020-10-15 00:08:07,725 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 298 transitions. Word has length 108 [2020-10-15 00:08:07,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:08:07,726 INFO L479 AbstractCegarLoop]: Abstraction has 226 states and 298 transitions. [2020-10-15 00:08:07,726 INFO L480 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-10-15 00:08:07,726 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 298 transitions. [2020-10-15 00:08:07,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-15 00:08:07,728 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:08:07,728 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 27, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:08:07,728 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2020-10-15 00:08:07,729 INFO L427 AbstractCegarLoop]: === Iteration 59 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:08:07,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:08:07,729 INFO L82 PathProgramCache]: Analyzing trace with hash -516457239, now seen corresponding path program 53 times [2020-10-15 00:08:07,729 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:08:07,729 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1537505262] [2020-10-15 00:08:07,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:08:07,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:07,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:07,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:08,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:08,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:08,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:08,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:08,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:08,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:08,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:08,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:08,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:08,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:09,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:09,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:09,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-15 00:08:09,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-15 00:08:09,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2133 [2020-10-15 00:08:09,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:09,879 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:09,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-15 00:08:09,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 00:08:09,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-15 00:08:09,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:10,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:08:10,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:10,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:10,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:10,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:08:10,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:10,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:08:10,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:10,661 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:10,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:08:10,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:10,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 00:08:10,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:10,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:08:10,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:10,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:10,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:10,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:08:10,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:10,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:08:10,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:10,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:10,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:08:10,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:10,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:08:10,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:10,679 INFO L134 CoverageAnalysis]: Checked inductivity of 1335 backedges. 0 proven. 1328 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-15 00:08:10,679 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1537505262] [2020-10-15 00:08:10,680 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:08:10,680 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-10-15 00:08:10,680 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322952160] [2020-10-15 00:08:10,680 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-15 00:08:10,680 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:08:10,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-15 00:08:10,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=443, Invalid=679, Unknown=0, NotChecked=0, Total=1122 [2020-10-15 00:08:10,681 INFO L87 Difference]: Start difference. First operand 226 states and 298 transitions. Second operand 34 states. [2020-10-15 00:08:16,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:08:16,478 INFO L93 Difference]: Finished difference Result 598 states and 786 transitions. [2020-10-15 00:08:16,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2020-10-15 00:08:16,479 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 111 [2020-10-15 00:08:16,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:08:16,481 INFO L225 Difference]: With dead ends: 598 [2020-10-15 00:08:16,481 INFO L226 Difference]: Without dead ends: 384 [2020-10-15 00:08:16,483 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7741 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=6184, Invalid=16166, Unknown=0, NotChecked=0, Total=22350 [2020-10-15 00:08:16,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2020-10-15 00:08:16,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 324. [2020-10-15 00:08:16,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 324 states. [2020-10-15 00:08:16,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 430 transitions. [2020-10-15 00:08:16,529 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 430 transitions. Word has length 111 [2020-10-15 00:08:16,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:08:16,530 INFO L479 AbstractCegarLoop]: Abstraction has 324 states and 430 transitions. [2020-10-15 00:08:16,530 INFO L480 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-10-15 00:08:16,530 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 430 transitions. [2020-10-15 00:08:16,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-15 00:08:16,531 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:08:16,531 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 28, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:08:16,531 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2020-10-15 00:08:16,531 INFO L427 AbstractCegarLoop]: === Iteration 60 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:08:16,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:08:16,532 INFO L82 PathProgramCache]: Analyzing trace with hash -1537525593, now seen corresponding path program 54 times [2020-10-15 00:08:16,532 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:08:16,532 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [651813080] [2020-10-15 00:08:16,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:08:16,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:16,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:16,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:16,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:16,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:16,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:16,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:17,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:17,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:17,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:17,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-15 00:08:17,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 00:08:17,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1266 [2020-10-15 00:08:17,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:17,809 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:17,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-15 00:08:17,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 00:08:17,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-15 00:08:17,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:18,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:08:18,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:18,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:18,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:18,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:08:18,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:18,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:08:18,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:18,676 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:18,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:08:18,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:18,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 00:08:18,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:18,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:08:18,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:18,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:18,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:18,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:08:18,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:18,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:08:18,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:18,684 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:18,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:08:18,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:18,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:08:18,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-15 00:08:18,703 INFO L134 CoverageAnalysis]: Checked inductivity of 1335 backedges. 0 proven. 1335 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:08:18,703 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [651813080] [2020-10-15 00:08:18,703 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:08:18,703 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2020-10-15 00:08:18,703 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926983589] [2020-10-15 00:08:18,704 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-10-15 00:08:18,704 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:08:18,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-10-15 00:08:18,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=532, Invalid=658, Unknown=0, NotChecked=0, Total=1190 [2020-10-15 00:08:18,704 INFO L87 Difference]: Start difference. First operand 324 states and 430 transitions. Second operand 35 states. [2020-10-15 00:08:20,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:08:20,552 INFO L93 Difference]: Finished difference Result 667 states and 891 transitions. [2020-10-15 00:08:20,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-15 00:08:20,553 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 111 [2020-10-15 00:08:20,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:08:20,555 INFO L225 Difference]: With dead ends: 667 [2020-10-15 00:08:20,555 INFO L226 Difference]: Without dead ends: 355 [2020-10-15 00:08:20,556 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 526 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1590, Invalid=2832, Unknown=0, NotChecked=0, Total=4422 [2020-10-15 00:08:20,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2020-10-15 00:08:20,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 336. [2020-10-15 00:08:20,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 336 states. [2020-10-15 00:08:20,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 446 transitions. [2020-10-15 00:08:20,605 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 446 transitions. Word has length 111 [2020-10-15 00:08:20,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:08:20,606 INFO L479 AbstractCegarLoop]: Abstraction has 336 states and 446 transitions. [2020-10-15 00:08:20,606 INFO L480 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-10-15 00:08:20,606 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 446 transitions. [2020-10-15 00:08:20,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-15 00:08:20,607 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:08:20,607 INFO L422 BasicCegarLoop]: trace histogram [31, 31, 28, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:08:20,607 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2020-10-15 00:08:20,607 INFO L427 AbstractCegarLoop]: === Iteration 61 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:08:20,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:08:20,608 INFO L82 PathProgramCache]: Analyzing trace with hash 2022747195, now seen corresponding path program 55 times [2020-10-15 00:08:20,608 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:08:20,608 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [580894131] [2020-10-15 00:08:20,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:08:20,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:20,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:20,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:20,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:20,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:20,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:21,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:21,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:21,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:21,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:21,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:21,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:21,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:21,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:22,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:22,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-15 00:08:22,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-15 00:08:22,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1974 [2020-10-15 00:08:22,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:22,594 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:22,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-15 00:08:22,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 00:08:22,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-15 00:08:22,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:23,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:08:23,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:23,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:23,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:23,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:08:23,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:23,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:08:23,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:23,447 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:23,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:08:23,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:23,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 00:08:23,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:23,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:08:23,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:23,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:23,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:23,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:08:23,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:23,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:08:23,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:23,451 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:23,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:08:23,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:23,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:08:23,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:23,467 INFO L134 CoverageAnalysis]: Checked inductivity of 1426 backedges. 0 proven. 1419 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-15 00:08:23,468 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [580894131] [2020-10-15 00:08:23,468 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:08:23,468 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2020-10-15 00:08:23,468 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802862936] [2020-10-15 00:08:23,468 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-10-15 00:08:23,469 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:08:23,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-10-15 00:08:23,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=473, Invalid=717, Unknown=0, NotChecked=0, Total=1190 [2020-10-15 00:08:23,469 INFO L87 Difference]: Start difference. First operand 336 states and 446 transitions. Second operand 35 states. [2020-10-15 00:08:29,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:08:29,786 INFO L93 Difference]: Finished difference Result 831 states and 1098 transitions. [2020-10-15 00:08:29,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2020-10-15 00:08:29,792 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 114 [2020-10-15 00:08:29,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:08:29,795 INFO L225 Difference]: With dead ends: 831 [2020-10-15 00:08:29,795 INFO L226 Difference]: Without dead ends: 507 [2020-10-15 00:08:29,796 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8293 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=6607, Invalid=17263, Unknown=0, NotChecked=0, Total=23870 [2020-10-15 00:08:29,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2020-10-15 00:08:29,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 333. [2020-10-15 00:08:29,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 333 states. [2020-10-15 00:08:29,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 442 transitions. [2020-10-15 00:08:29,828 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 442 transitions. Word has length 114 [2020-10-15 00:08:29,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:08:29,828 INFO L479 AbstractCegarLoop]: Abstraction has 333 states and 442 transitions. [2020-10-15 00:08:29,828 INFO L480 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-10-15 00:08:29,828 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 442 transitions. [2020-10-15 00:08:29,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-15 00:08:29,829 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:08:29,829 INFO L422 BasicCegarLoop]: trace histogram [31, 31, 29, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:08:29,829 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2020-10-15 00:08:29,829 INFO L427 AbstractCegarLoop]: === Iteration 62 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:08:29,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:08:29,829 INFO L82 PathProgramCache]: Analyzing trace with hash 1001678841, now seen corresponding path program 56 times [2020-10-15 00:08:29,829 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:08:29,829 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1063914112] [2020-10-15 00:08:29,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:08:29,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:29,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:29,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:30,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:30,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:30,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:30,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:30,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:30,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:31,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:31,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-15 00:08:31,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 00:08:31,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1281 [2020-10-15 00:08:31,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:31,119 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:31,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-15 00:08:31,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 00:08:31,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-15 00:08:31,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:31,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:08:31,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:31,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:31,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:31,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:08:31,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:31,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:08:31,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:31,979 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:31,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:08:31,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:31,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 00:08:31,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:31,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:08:31,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:31,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:31,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:31,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:08:31,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:31,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-15 00:08:31,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:31,993 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:31,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:08:31,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:31,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:08:31,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:32,007 INFO L134 CoverageAnalysis]: Checked inductivity of 1426 backedges. 0 proven. 1424 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 00:08:32,007 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1063914112] [2020-10-15 00:08:32,007 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:08:32,008 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2020-10-15 00:08:32,008 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867294702] [2020-10-15 00:08:32,008 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-10-15 00:08:32,008 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:08:32,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-10-15 00:08:32,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=504, Invalid=756, Unknown=0, NotChecked=0, Total=1260 [2020-10-15 00:08:32,008 INFO L87 Difference]: Start difference. First operand 333 states and 442 transitions. Second operand 36 states. [2020-10-15 00:08:39,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:08:39,315 INFO L93 Difference]: Finished difference Result 814 states and 1077 transitions. [2020-10-15 00:08:39,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2020-10-15 00:08:39,316 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 114 [2020-10-15 00:08:39,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:08:39,318 INFO L225 Difference]: With dead ends: 814 [2020-10-15 00:08:39,318 INFO L226 Difference]: Without dead ends: 493 [2020-10-15 00:08:39,320 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8864 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=7044, Invalid=18396, Unknown=0, NotChecked=0, Total=25440 [2020-10-15 00:08:39,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2020-10-15 00:08:39,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 331. [2020-10-15 00:08:39,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 331 states. [2020-10-15 00:08:39,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 440 transitions. [2020-10-15 00:08:39,353 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 440 transitions. Word has length 114 [2020-10-15 00:08:39,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:08:39,353 INFO L479 AbstractCegarLoop]: Abstraction has 331 states and 440 transitions. [2020-10-15 00:08:39,353 INFO L480 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-10-15 00:08:39,353 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 440 transitions. [2020-10-15 00:08:39,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-15 00:08:39,353 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:08:39,354 INFO L422 BasicCegarLoop]: trace histogram [31, 31, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:08:39,354 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2020-10-15 00:08:39,354 INFO L427 AbstractCegarLoop]: === Iteration 63 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:08:39,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:08:39,354 INFO L82 PathProgramCache]: Analyzing trace with hash 414872827, now seen corresponding path program 57 times [2020-10-15 00:08:39,354 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:08:39,354 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2068910187] [2020-10-15 00:08:39,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:08:39,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:39,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:39,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:39,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:39,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:39,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:40,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:40,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-15 00:08:40,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 00:08:40,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1026 [2020-10-15 00:08:40,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:40,392 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:40,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-15 00:08:40,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 00:08:40,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-15 00:08:40,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:41,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:08:41,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:41,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:41,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:41,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:08:41,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:41,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:08:41,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:41,405 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:41,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:08:41,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:41,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 00:08:41,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:41,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:08:41,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:41,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:41,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:41,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:08:41,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:41,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:08:41,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:41,409 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:41,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:08:41,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:41,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:08:41,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:41,423 INFO L134 CoverageAnalysis]: Checked inductivity of 1426 backedges. 0 proven. 1426 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:08:41,424 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2068910187] [2020-10-15 00:08:41,424 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:08:41,424 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2020-10-15 00:08:41,424 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142368116] [2020-10-15 00:08:41,425 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-10-15 00:08:41,425 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:08:41,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-10-15 00:08:41,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=565, Invalid=695, Unknown=0, NotChecked=0, Total=1260 [2020-10-15 00:08:41,426 INFO L87 Difference]: Start difference. First operand 331 states and 440 transitions. Second operand 36 states. [2020-10-15 00:08:43,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:08:43,368 INFO L93 Difference]: Finished difference Result 680 states and 909 transitions. [2020-10-15 00:08:43,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-15 00:08:43,369 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 114 [2020-10-15 00:08:43,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:08:43,370 INFO L225 Difference]: With dead ends: 680 [2020-10-15 00:08:43,370 INFO L226 Difference]: Without dead ends: 361 [2020-10-15 00:08:43,372 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 559 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1689, Invalid=3003, Unknown=0, NotChecked=0, Total=4692 [2020-10-15 00:08:43,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2020-10-15 00:08:43,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 342. [2020-10-15 00:08:43,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 342 states. [2020-10-15 00:08:43,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 454 transitions. [2020-10-15 00:08:43,423 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 454 transitions. Word has length 114 [2020-10-15 00:08:43,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:08:43,423 INFO L479 AbstractCegarLoop]: Abstraction has 342 states and 454 transitions. [2020-10-15 00:08:43,423 INFO L480 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-10-15 00:08:43,423 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 454 transitions. [2020-10-15 00:08:43,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-15 00:08:43,424 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:08:43,424 INFO L422 BasicCegarLoop]: trace histogram [32, 32, 30, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:08:43,424 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2020-10-15 00:08:43,425 INFO L427 AbstractCegarLoop]: === Iteration 64 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:08:43,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:08:43,425 INFO L82 PathProgramCache]: Analyzing trace with hash -818012313, now seen corresponding path program 58 times [2020-10-15 00:08:43,425 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:08:43,425 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [821362890] [2020-10-15 00:08:43,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:08:43,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:43,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:43,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:43,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:43,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:43,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:44,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:44,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:44,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:44,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:44,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-15 00:08:44,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 00:08:44,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1186 [2020-10-15 00:08:44,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:44,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:44,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-15 00:08:44,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 00:08:44,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-15 00:08:44,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:45,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:08:45,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:45,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:45,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:45,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:08:45,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:45,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:08:45,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:45,708 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:45,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:08:45,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:45,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 00:08:45,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:45,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:08:45,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:45,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:45,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:45,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:08:45,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:45,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:08:45,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:45,712 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:45,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:08:45,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:45,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:08:45,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:45,728 INFO L134 CoverageAnalysis]: Checked inductivity of 1520 backedges. 0 proven. 1520 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:08:45,728 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [821362890] [2020-10-15 00:08:45,728 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:08:45,729 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2020-10-15 00:08:45,729 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530176329] [2020-10-15 00:08:45,729 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-10-15 00:08:45,729 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:08:45,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-10-15 00:08:45,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=599, Invalid=733, Unknown=0, NotChecked=0, Total=1332 [2020-10-15 00:08:45,730 INFO L87 Difference]: Start difference. First operand 342 states and 454 transitions. Second operand 37 states. [2020-10-15 00:08:47,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:08:47,846 INFO L93 Difference]: Finished difference Result 703 states and 939 transitions. [2020-10-15 00:08:47,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-15 00:08:47,847 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 117 [2020-10-15 00:08:47,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:08:47,849 INFO L225 Difference]: With dead ends: 703 [2020-10-15 00:08:47,850 INFO L226 Difference]: Without dead ends: 373 [2020-10-15 00:08:47,851 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 593 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1791, Invalid=3179, Unknown=0, NotChecked=0, Total=4970 [2020-10-15 00:08:47,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2020-10-15 00:08:47,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 354. [2020-10-15 00:08:47,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 354 states. [2020-10-15 00:08:47,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 470 transitions. [2020-10-15 00:08:47,889 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 470 transitions. Word has length 117 [2020-10-15 00:08:47,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:08:47,890 INFO L479 AbstractCegarLoop]: Abstraction has 354 states and 470 transitions. [2020-10-15 00:08:47,890 INFO L480 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-10-15 00:08:47,890 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 470 transitions. [2020-10-15 00:08:47,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-15 00:08:47,891 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:08:47,891 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 30, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:08:47,891 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2020-10-15 00:08:47,891 INFO L427 AbstractCegarLoop]: === Iteration 65 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:08:47,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:08:47,892 INFO L82 PathProgramCache]: Analyzing trace with hash 861097339, now seen corresponding path program 59 times [2020-10-15 00:08:47,892 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:08:47,892 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2141755450] [2020-10-15 00:08:47,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:08:47,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:47,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:47,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:48,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:48,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:48,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:48,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:48,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:48,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:48,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:48,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:48,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:48,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:49,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:50,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:50,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-15 00:08:50,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-15 00:08:50,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2128 [2020-10-15 00:08:50,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:50,032 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:50,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-15 00:08:50,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 00:08:50,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-15 00:08:50,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:51,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:08:51,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:51,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:51,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:51,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:08:51,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:51,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:08:51,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:51,071 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:51,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:08:51,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:51,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 00:08:51,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:51,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:08:51,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:51,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:51,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:51,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:08:51,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:51,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:08:51,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:51,076 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:51,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:08:51,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:51,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:08:51,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:51,107 INFO L134 CoverageAnalysis]: Checked inductivity of 1617 backedges. 0 proven. 1610 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-15 00:08:51,107 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2141755450] [2020-10-15 00:08:51,107 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:08:51,107 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2020-10-15 00:08:51,107 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952245905] [2020-10-15 00:08:51,108 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-10-15 00:08:51,108 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:08:51,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-10-15 00:08:51,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=536, Invalid=796, Unknown=0, NotChecked=0, Total=1332 [2020-10-15 00:08:51,108 INFO L87 Difference]: Start difference. First operand 354 states and 470 transitions. Second operand 37 states. [2020-10-15 00:08:54,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:08:54,937 INFO L93 Difference]: Finished difference Result 837 states and 1115 transitions. [2020-10-15 00:08:54,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2020-10-15 00:08:54,938 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 120 [2020-10-15 00:08:54,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:08:54,940 INFO L225 Difference]: With dead ends: 837 [2020-10-15 00:08:54,940 INFO L226 Difference]: Without dead ends: 495 [2020-10-15 00:08:54,942 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2231 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=3223, Invalid=7283, Unknown=0, NotChecked=0, Total=10506 [2020-10-15 00:08:54,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2020-10-15 00:08:54,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 241. [2020-10-15 00:08:54,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2020-10-15 00:08:54,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 318 transitions. [2020-10-15 00:08:54,976 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 318 transitions. Word has length 120 [2020-10-15 00:08:54,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:08:54,976 INFO L479 AbstractCegarLoop]: Abstraction has 241 states and 318 transitions. [2020-10-15 00:08:54,976 INFO L480 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-10-15 00:08:54,976 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 318 transitions. [2020-10-15 00:08:54,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-15 00:08:54,977 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:08:54,977 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 31, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:08:54,977 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2020-10-15 00:08:54,977 INFO L427 AbstractCegarLoop]: === Iteration 66 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:08:54,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:08:54,978 INFO L82 PathProgramCache]: Analyzing trace with hash -159971015, now seen corresponding path program 60 times [2020-10-15 00:08:54,978 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:08:54,978 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1853764002] [2020-10-15 00:08:54,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:08:54,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:54,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:55,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:55,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:55,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:55,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:55,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:55,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:55,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:56,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:56,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-15 00:08:56,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 00:08:56,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1438 [2020-10-15 00:08:56,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:56,428 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:56,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-10-15 00:08:56,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 00:08:56,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-15 00:08:56,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:57,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:08:57,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:57,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:57,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:57,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:08:57,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:57,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:08:57,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:57,553 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:57,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:08:57,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:57,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 00:08:57,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:08:57,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:08:57,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:57,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:57,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:57,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:08:57,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:57,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:08:57,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:57,560 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:57,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:08:57,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:57,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:08:57,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:57,601 INFO L134 CoverageAnalysis]: Checked inductivity of 1617 backedges. 0 proven. 1615 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 00:08:57,601 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1853764002] [2020-10-15 00:08:57,602 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:08:57,602 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2020-10-15 00:08:57,602 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586793929] [2020-10-15 00:08:57,603 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-10-15 00:08:57,603 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:08:57,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-10-15 00:08:57,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=569, Invalid=837, Unknown=0, NotChecked=0, Total=1406 [2020-10-15 00:08:57,604 INFO L87 Difference]: Start difference. First operand 241 states and 318 transitions. Second operand 38 states. [2020-10-15 00:09:02,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:09:02,277 INFO L93 Difference]: Finished difference Result 594 states and 791 transitions. [2020-10-15 00:09:02,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2020-10-15 00:09:02,279 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 120 [2020-10-15 00:09:02,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:09:02,280 INFO L225 Difference]: With dead ends: 594 [2020-10-15 00:09:02,280 INFO L226 Difference]: Without dead ends: 365 [2020-10-15 00:09:02,281 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2367 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=3422, Invalid=7708, Unknown=0, NotChecked=0, Total=11130 [2020-10-15 00:09:02,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2020-10-15 00:09:02,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 239. [2020-10-15 00:09:02,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2020-10-15 00:09:02,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 316 transitions. [2020-10-15 00:09:02,317 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 316 transitions. Word has length 120 [2020-10-15 00:09:02,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:09:02,318 INFO L479 AbstractCegarLoop]: Abstraction has 239 states and 316 transitions. [2020-10-15 00:09:02,318 INFO L480 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-10-15 00:09:02,318 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 316 transitions. [2020-10-15 00:09:02,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-15 00:09:02,319 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:09:02,319 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:09:02,319 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2020-10-15 00:09:02,319 INFO L427 AbstractCegarLoop]: === Iteration 67 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:09:02,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:09:02,319 INFO L82 PathProgramCache]: Analyzing trace with hash -746777029, now seen corresponding path program 61 times [2020-10-15 00:09:02,320 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:09:02,320 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1777504054] [2020-10-15 00:09:02,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:09:02,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:02,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:02,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:02,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:02,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:02,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:03,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:03,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-15 00:09:03,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 00:09:03,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1070 [2020-10-15 00:09:03,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:03,402 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:03,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-10-15 00:09:03,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 00:09:03,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-15 00:09:03,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:04,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:09:04,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:04,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:04,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:04,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:09:04,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:09:04,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:09:04,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:04,562 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:04,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:09:04,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:09:04,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 00:09:04,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:04,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:09:04,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:04,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:04,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:04,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:09:04,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:09:04,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:09:04,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:04,565 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:04,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:09:04,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:09:04,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:09:04,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:04,582 INFO L134 CoverageAnalysis]: Checked inductivity of 1617 backedges. 0 proven. 1617 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:09:04,582 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1777504054] [2020-10-15 00:09:04,582 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:09:04,582 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2020-10-15 00:09:04,583 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20469943] [2020-10-15 00:09:04,583 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-10-15 00:09:04,583 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:09:04,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-10-15 00:09:04,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=634, Invalid=772, Unknown=0, NotChecked=0, Total=1406 [2020-10-15 00:09:04,583 INFO L87 Difference]: Start difference. First operand 239 states and 316 transitions. Second operand 38 states. [2020-10-15 00:09:07,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:09:07,011 INFO L93 Difference]: Finished difference Result 486 states and 648 transitions. [2020-10-15 00:09:07,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-15 00:09:07,014 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 120 [2020-10-15 00:09:07,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:09:07,015 INFO L225 Difference]: With dead ends: 486 [2020-10-15 00:09:07,016 INFO L226 Difference]: Without dead ends: 259 [2020-10-15 00:09:07,017 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 628 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1896, Invalid=3360, Unknown=0, NotChecked=0, Total=5256 [2020-10-15 00:09:07,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2020-10-15 00:09:07,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 247. [2020-10-15 00:09:07,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 247 states. [2020-10-15 00:09:07,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 326 transitions. [2020-10-15 00:09:07,060 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 326 transitions. Word has length 120 [2020-10-15 00:09:07,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:09:07,060 INFO L479 AbstractCegarLoop]: Abstraction has 247 states and 326 transitions. [2020-10-15 00:09:07,060 INFO L480 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-10-15 00:09:07,060 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 326 transitions. [2020-10-15 00:09:07,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-15 00:09:07,061 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:09:07,061 INFO L422 BasicCegarLoop]: trace histogram [34, 34, 32, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:09:07,061 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2020-10-15 00:09:07,061 INFO L427 AbstractCegarLoop]: === Iteration 68 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:09:07,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:09:07,062 INFO L82 PathProgramCache]: Analyzing trace with hash 1317598759, now seen corresponding path program 62 times [2020-10-15 00:09:07,062 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:09:07,062 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1465291815] [2020-10-15 00:09:07,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:09:07,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:07,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:07,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:07,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:07,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:07,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:07,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:08,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:08,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:08,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:08,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-15 00:09:08,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 00:09:08,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1551 [2020-10-15 00:09:08,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:08,626 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:08,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 37 [2020-10-15 00:09:08,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 00:09:08,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-15 00:09:08,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:09,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:09:09,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:09,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:09,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:09,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:09:09,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:09:09,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:09:09,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:09,900 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:09,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:09:09,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:09:09,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 00:09:09,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:09,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:09:09,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:09,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:09,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:09,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:09:09,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:09:09,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:09:09,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:09,904 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:09,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:09:09,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:09:09,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:09:09,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:09,921 INFO L134 CoverageAnalysis]: Checked inductivity of 1717 backedges. 0 proven. 1717 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:09:09,921 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1465291815] [2020-10-15 00:09:09,921 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:09:09,921 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2020-10-15 00:09:09,921 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277704239] [2020-10-15 00:09:09,922 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-10-15 00:09:09,922 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:09:09,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-10-15 00:09:09,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=670, Invalid=812, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 00:09:09,922 INFO L87 Difference]: Start difference. First operand 247 states and 326 transitions. Second operand 39 states. [2020-10-15 00:09:12,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:09:12,364 INFO L93 Difference]: Finished difference Result 503 states and 670 transitions. [2020-10-15 00:09:12,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-15 00:09:12,366 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 123 [2020-10-15 00:09:12,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:09:12,367 INFO L225 Difference]: With dead ends: 503 [2020-10-15 00:09:12,367 INFO L226 Difference]: Without dead ends: 268 [2020-10-15 00:09:12,368 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 664 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=2004, Invalid=3546, Unknown=0, NotChecked=0, Total=5550 [2020-10-15 00:09:12,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2020-10-15 00:09:12,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 256. [2020-10-15 00:09:12,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 256 states. [2020-10-15 00:09:12,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 338 transitions. [2020-10-15 00:09:12,406 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 338 transitions. Word has length 123 [2020-10-15 00:09:12,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:09:12,406 INFO L479 AbstractCegarLoop]: Abstraction has 256 states and 338 transitions. [2020-10-15 00:09:12,406 INFO L480 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-10-15 00:09:12,406 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 338 transitions. [2020-10-15 00:09:12,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-15 00:09:12,407 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:09:12,407 INFO L422 BasicCegarLoop]: trace histogram [35, 35, 32, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:09:12,407 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2020-10-15 00:09:12,407 INFO L427 AbstractCegarLoop]: === Iteration 69 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:09:12,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:09:12,408 INFO L82 PathProgramCache]: Analyzing trace with hash 1499987643, now seen corresponding path program 63 times [2020-10-15 00:09:12,408 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:09:12,408 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [947872684] [2020-10-15 00:09:12,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:09:12,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:12,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:12,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:12,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:12,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:12,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:13,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:13,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:13,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:13,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:13,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:13,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:13,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:14,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:14,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:14,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-15 00:09:14,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-15 00:09:14,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2449 [2020-10-15 00:09:14,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:14,872 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:14,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 37 [2020-10-15 00:09:14,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 00:09:14,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-15 00:09:14,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:16,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:09:16,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:16,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:16,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:16,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:09:16,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:09:16,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:09:16,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:16,026 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:16,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:09:16,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:09:16,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 00:09:16,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:16,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:09:16,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:16,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:16,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:16,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:09:16,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:09:16,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:09:16,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:16,031 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:16,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:09:16,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:09:16,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:09:16,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:16,049 INFO L134 CoverageAnalysis]: Checked inductivity of 1820 backedges. 0 proven. 1813 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-15 00:09:16,050 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [947872684] [2020-10-15 00:09:16,050 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:09:16,050 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2020-10-15 00:09:16,050 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935868101] [2020-10-15 00:09:16,050 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-10-15 00:09:16,051 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:09:16,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-10-15 00:09:16,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=603, Invalid=879, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 00:09:16,051 INFO L87 Difference]: Start difference. First operand 256 states and 338 transitions. Second operand 39 states. [2020-10-15 00:09:20,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:09:20,788 INFO L93 Difference]: Finished difference Result 639 states and 849 transitions. [2020-10-15 00:09:20,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2020-10-15 00:09:20,790 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 126 [2020-10-15 00:09:20,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:09:20,791 INFO L225 Difference]: With dead ends: 639 [2020-10-15 00:09:20,791 INFO L226 Difference]: Without dead ends: 395 [2020-10-15 00:09:20,792 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2507 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=3627, Invalid=8145, Unknown=0, NotChecked=0, Total=11772 [2020-10-15 00:09:20,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2020-10-15 00:09:20,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 253. [2020-10-15 00:09:20,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 253 states. [2020-10-15 00:09:20,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 334 transitions. [2020-10-15 00:09:20,830 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 334 transitions. Word has length 126 [2020-10-15 00:09:20,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:09:20,830 INFO L479 AbstractCegarLoop]: Abstraction has 253 states and 334 transitions. [2020-10-15 00:09:20,830 INFO L480 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-10-15 00:09:20,831 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 334 transitions. [2020-10-15 00:09:20,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-15 00:09:20,831 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:09:20,831 INFO L422 BasicCegarLoop]: trace histogram [35, 35, 33, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:09:20,831 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2020-10-15 00:09:20,831 INFO L427 AbstractCegarLoop]: === Iteration 70 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:09:20,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:09:20,832 INFO L82 PathProgramCache]: Analyzing trace with hash 478919289, now seen corresponding path program 64 times [2020-10-15 00:09:20,832 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:09:20,832 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1812208794] [2020-10-15 00:09:20,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:09:20,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:20,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:20,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:21,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:21,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:21,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:21,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:21,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:21,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:22,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:22,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-15 00:09:22,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 00:09:22,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1556 [2020-10-15 00:09:22,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:22,398 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:22,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 38 [2020-10-15 00:09:22,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 00:09:22,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-10-15 00:09:22,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:23,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:09:23,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:23,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:23,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:23,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:09:23,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:09:23,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:09:23,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:23,702 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:23,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:09:23,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:09:23,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 00:09:23,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:23,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:09:23,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:23,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:23,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:23,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:09:23,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:09:23,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:09:23,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:23,706 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:23,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:09:23,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:09:23,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:09:23,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:23,724 INFO L134 CoverageAnalysis]: Checked inductivity of 1820 backedges. 0 proven. 1820 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:09:23,724 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1812208794] [2020-10-15 00:09:23,725 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:09:23,725 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2020-10-15 00:09:23,725 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81426699] [2020-10-15 00:09:23,725 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2020-10-15 00:09:23,725 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:09:23,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2020-10-15 00:09:23,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=707, Invalid=853, Unknown=0, NotChecked=0, Total=1560 [2020-10-15 00:09:23,726 INFO L87 Difference]: Start difference. First operand 253 states and 334 transitions. Second operand 40 states.