/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-examples/standard_init7_ground-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 17:59:38,723 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 17:59:38,726 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 17:59:38,766 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 17:59:38,766 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 17:59:38,778 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 17:59:38,780 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 17:59:38,783 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 17:59:38,786 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 17:59:38,789 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 17:59:38,790 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 17:59:38,791 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 17:59:38,791 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 17:59:38,794 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 17:59:38,797 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 17:59:38,799 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 17:59:38,800 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 17:59:38,801 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 17:59:38,802 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 17:59:38,810 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 17:59:38,812 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 17:59:38,813 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 17:59:38,814 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 17:59:38,815 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 17:59:38,820 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 17:59:38,820 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 17:59:38,820 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 17:59:38,823 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 17:59:38,825 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 17:59:38,826 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 17:59:38,826 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 17:59:38,827 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 17:59:38,828 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 17:59:38,828 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 17:59:38,829 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 17:59:38,830 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 17:59:38,830 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 17:59:38,831 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 17:59:38,831 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 17:59:38,832 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 17:59:38,833 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 17:59:38,834 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 17:59:38,875 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 17:59:38,876 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 17:59:38,879 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 17:59:38,879 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 17:59:38,879 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 17:59:38,880 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 17:59:38,880 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 17:59:38,880 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 17:59:38,880 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 17:59:38,880 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 17:59:38,881 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 17:59:38,881 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 17:59:38,881 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 17:59:38,881 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 17:59:38,881 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 17:59:38,882 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 17:59:38,882 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 17:59:38,882 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 17:59:38,882 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 17:59:38,882 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 17:59:38,882 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 17:59:38,883 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 17:59:38,883 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 17:59:38,883 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 17:59:38,883 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 17:59:38,883 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 17:59:38,884 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 17:59:38,884 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 17:59:38,884 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 17:59:38,884 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 17:59:39,171 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 17:59:39,183 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 17:59:39,187 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 17:59:39,189 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 17:59:39,189 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 17:59:39,190 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_init7_ground-1.i [2020-10-14 17:59:39,255 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6d015f45a/84df8d6256c04ab99c68d10e969f8cb6/FLAG6d41b10ed [2020-10-14 17:59:39,778 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 17:59:39,779 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-examples/standard_init7_ground-1.i [2020-10-14 17:59:39,785 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6d015f45a/84df8d6256c04ab99c68d10e969f8cb6/FLAG6d41b10ed [2020-10-14 17:59:40,086 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6d015f45a/84df8d6256c04ab99c68d10e969f8cb6 [2020-10-14 17:59:40,097 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 17:59:40,099 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 17:59:40,100 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 17:59:40,100 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 17:59:40,104 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 17:59:40,105 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 05:59:40" (1/1) ... [2020-10-14 17:59:40,108 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@347c51ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:59:40, skipping insertion in model container [2020-10-14 17:59:40,108 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 05:59:40" (1/1) ... [2020-10-14 17:59:40,116 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 17:59:40,132 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 17:59:40,303 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 17:59:40,307 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 17:59:40,330 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 17:59:40,350 INFO L208 MainTranslator]: Completed translation [2020-10-14 17:59:40,350 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:59:40 WrapperNode [2020-10-14 17:59:40,350 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 17:59:40,351 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 17:59:40,351 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 17:59:40,351 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 17:59:40,448 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:59:40" (1/1) ... [2020-10-14 17:59:40,449 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:59:40" (1/1) ... [2020-10-14 17:59:40,456 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:59:40" (1/1) ... [2020-10-14 17:59:40,456 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:59:40" (1/1) ... [2020-10-14 17:59:40,464 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:59:40" (1/1) ... [2020-10-14 17:59:40,471 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:59:40" (1/1) ... [2020-10-14 17:59:40,473 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:59:40" (1/1) ... [2020-10-14 17:59:40,475 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 17:59:40,476 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 17:59:40,476 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 17:59:40,476 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 17:59:40,477 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:59:40" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 17:59:40,534 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 17:59:40,535 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 17:59:40,535 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-14 17:59:40,535 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 17:59:40,535 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 17:59:40,535 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-14 17:59:40,535 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 17:59:40,536 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-14 17:59:40,536 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-14 17:59:40,536 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-14 17:59:40,536 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 17:59:40,536 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 17:59:40,536 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 17:59:40,810 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 17:59:40,810 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-14 17:59:40,815 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 05:59:40 BoogieIcfgContainer [2020-10-14 17:59:40,815 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 17:59:40,818 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 17:59:40,818 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 17:59:40,821 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 17:59:40,822 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 05:59:40" (1/3) ... [2020-10-14 17:59:40,823 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cdc44cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 05:59:40, skipping insertion in model container [2020-10-14 17:59:40,823 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:59:40" (2/3) ... [2020-10-14 17:59:40,824 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cdc44cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 05:59:40, skipping insertion in model container [2020-10-14 17:59:40,824 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 05:59:40" (3/3) ... [2020-10-14 17:59:40,826 INFO L109 eAbstractionObserver]: Analyzing ICFG standard_init7_ground-1.i [2020-10-14 17:59:40,839 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 17:59:40,848 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 17:59:40,864 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 17:59:40,892 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 17:59:40,892 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 17:59:40,892 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 17:59:40,893 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 17:59:40,893 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 17:59:40,893 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 17:59:40,893 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 17:59:40,893 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 17:59:40,927 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2020-10-14 17:59:40,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-14 17:59:40,934 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:59:40,935 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, 1] [2020-10-14 17:59:40,937 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:59:40,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:59:40,945 INFO L82 PathProgramCache]: Analyzing trace with hash -190793262, now seen corresponding path program 1 times [2020-10-14 17:59:40,954 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:59:40,955 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1255757556] [2020-10-14 17:59:40,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:59:41,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:59:41,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:59:41,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:59:41,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:59:41,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:59:41,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:59:41,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:59:41,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:59:42,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:59:42,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-14 17:59:42,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 17:59:42,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1190 [2020-10-14 17:59:42,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:59:42,254 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:59:42,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:59:42,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 17:59:42,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 17:59:42,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 17:59:42,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:59:42,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:59:42,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:59:42,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:59:42,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:59:42,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:59:42,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 17:59:42,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:59:42,368 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:59:42,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:59:42,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:59:42,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:59:42,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 17:59:42,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 17:59:42,386 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1255757556] [2020-10-14 17:59:42,389 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 17:59:42,390 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 17:59:42,392 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681510498] [2020-10-14 17:59:42,399 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 17:59:42,400 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:59:42,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 17:59:42,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 17:59:42,419 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 4 states. [2020-10-14 17:59:42,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:59:42,578 INFO L93 Difference]: Finished difference Result 70 states and 115 transitions. [2020-10-14 17:59:42,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 17:59:42,581 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-10-14 17:59:42,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:59:42,589 INFO L225 Difference]: With dead ends: 70 [2020-10-14 17:59:42,589 INFO L226 Difference]: Without dead ends: 37 [2020-10-14 17:59:42,593 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 17:59:42,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-10-14 17:59:42,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-10-14 17:59:42,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-14 17:59:42,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 44 transitions. [2020-10-14 17:59:42,640 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 44 transitions. Word has length 25 [2020-10-14 17:59:42,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:59:42,641 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 44 transitions. [2020-10-14 17:59:42,641 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 17:59:42,641 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 44 transitions. [2020-10-14 17:59:42,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-14 17:59:42,642 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:59:42,642 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:59:42,643 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 17:59:42,643 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:59:42,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:59:42,644 INFO L82 PathProgramCache]: Analyzing trace with hash -1635964633, now seen corresponding path program 1 times [2020-10-14 17:59:42,644 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:59:42,644 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1806855344] [2020-10-14 17:59:42,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:59:42,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:59:42,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:59:42,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:59:42,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:59:42,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:59:42,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:59:42,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:59:43,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:59:47,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:59:47,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-14 17:59:47,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 17:59:47,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-14 17:59:47,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:59:47,671 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:59:47,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 17:59:47,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-14 17:59:47,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-14 17:59:47,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:59:47,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:59:47,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:59:47,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:59:47,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:59:47,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:59:47,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:59:47,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 17:59:47,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:59:47,731 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:59:47,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:59:47,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:59:47,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:59:47,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:59:47,739 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-14 17:59:47,740 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1806855344] [2020-10-14 17:59:47,741 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:59:47,741 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 17:59:47,741 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102741414] [2020-10-14 17:59:47,747 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 17:59:47,747 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:59:47,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 17:59:47,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 17:59:47,749 INFO L87 Difference]: Start difference. First operand 37 states and 44 transitions. Second operand 5 states. [2020-10-14 17:59:47,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:59:47,951 INFO L93 Difference]: Finished difference Result 73 states and 93 transitions. [2020-10-14 17:59:47,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 17:59:47,952 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 32 [2020-10-14 17:59:47,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:59:47,953 INFO L225 Difference]: With dead ends: 73 [2020-10-14 17:59:47,954 INFO L226 Difference]: Without dead ends: 44 [2020-10-14 17:59:47,956 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 17:59:47,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-14 17:59:47,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2020-10-14 17:59:47,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-14 17:59:47,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 51 transitions. [2020-10-14 17:59:47,975 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 51 transitions. Word has length 32 [2020-10-14 17:59:47,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:59:47,976 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 51 transitions. [2020-10-14 17:59:47,976 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 17:59:47,976 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 51 transitions. [2020-10-14 17:59:47,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-14 17:59:47,978 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:59:47,979 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:59:47,980 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 17:59:47,980 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:59:47,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:59:47,981 INFO L82 PathProgramCache]: Analyzing trace with hash 1768739882, now seen corresponding path program 2 times [2020-10-14 17:59:47,981 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:59:47,981 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [394219136] [2020-10-14 17:59:47,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:59:47,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:59:47,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:59:48,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:59:48,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:59:48,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:59:48,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:59:48,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:59:50,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:59:52,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:59:53,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-14 17:59:53,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 17:59:53,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 17:59:53,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:59:53,001 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:59:53,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 17:59:53,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-14 17:59:53,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 17:59:53,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:59:53,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:59:53,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:59:53,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:59:53,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:59:53,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:59:53,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:59:53,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:59:53,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:59:53,052 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:59:53,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:59:53,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:59:53,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:59:53,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:59:53,057 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-14 17:59:53,057 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [394219136] [2020-10-14 17:59:53,057 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:59:53,058 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 17:59:53,058 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707253548] [2020-10-14 17:59:53,058 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 17:59:53,059 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:59:53,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 17:59:53,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 17:59:53,060 INFO L87 Difference]: Start difference. First operand 44 states and 51 transitions. Second operand 6 states. [2020-10-14 17:59:53,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:59:53,202 INFO L93 Difference]: Finished difference Result 86 states and 106 transitions. [2020-10-14 17:59:53,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 17:59:53,203 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 39 [2020-10-14 17:59:53,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:59:53,204 INFO L225 Difference]: With dead ends: 86 [2020-10-14 17:59:53,204 INFO L226 Difference]: Without dead ends: 51 [2020-10-14 17:59:53,205 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 17:59:53,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-10-14 17:59:53,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2020-10-14 17:59:53,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-14 17:59:53,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 58 transitions. [2020-10-14 17:59:53,214 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 58 transitions. Word has length 39 [2020-10-14 17:59:53,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:59:53,215 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 58 transitions. [2020-10-14 17:59:53,215 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 17:59:53,215 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 58 transitions. [2020-10-14 17:59:53,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-14 17:59:53,217 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:59:53,217 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:59:53,217 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 17:59:53,218 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:59:53,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:59:53,218 INFO L82 PathProgramCache]: Analyzing trace with hash -1394041657, now seen corresponding path program 3 times [2020-10-14 17:59:53,218 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:59:53,219 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [16027458] [2020-10-14 17:59:53,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:59:53,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:59:53,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:59:53,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:59:53,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:59:53,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:59:53,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:59:53,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:59:58,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:59:58,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-14 17:59:58,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 17:59:58,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 17:59:58,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:59:58,244 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:59:58,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 17:59:58,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-14 17:59:58,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 17:59:58,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:59:58,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:59:58,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:59:58,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:59:58,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:59:58,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:59:58,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:59:58,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 17:59:58,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:59:58,300 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:59:58,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:59:58,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:59:58,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:59:58,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:59:58,307 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-10-14 17:59:58,307 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [16027458] [2020-10-14 17:59:58,307 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:59:58,308 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 17:59:58,309 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672456007] [2020-10-14 17:59:58,309 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 17:59:58,310 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:59:58,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 17:59:58,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-14 17:59:58,311 INFO L87 Difference]: Start difference. First operand 51 states and 58 transitions. Second operand 7 states. [2020-10-14 17:59:58,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:59:58,491 INFO L93 Difference]: Finished difference Result 99 states and 119 transitions. [2020-10-14 17:59:58,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 17:59:58,498 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 46 [2020-10-14 17:59:58,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:59:58,499 INFO L225 Difference]: With dead ends: 99 [2020-10-14 17:59:58,499 INFO L226 Difference]: Without dead ends: 58 [2020-10-14 17:59:58,500 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-14 17:59:58,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-14 17:59:58,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2020-10-14 17:59:58,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-10-14 17:59:58,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 65 transitions. [2020-10-14 17:59:58,509 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 65 transitions. Word has length 46 [2020-10-14 17:59:58,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:59:58,509 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 65 transitions. [2020-10-14 17:59:58,509 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 17:59:58,509 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 65 transitions. [2020-10-14 17:59:58,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-14 17:59:58,510 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:59:58,511 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:59:58,511 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 17:59:58,511 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:59:58,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:59:58,511 INFO L82 PathProgramCache]: Analyzing trace with hash -1002468982, now seen corresponding path program 4 times [2020-10-14 17:59:58,512 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:59:58,512 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [775891073] [2020-10-14 17:59:58,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:59:58,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:59:58,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:59:58,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:59:58,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:59:58,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:59:58,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:00:00,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:00:03,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:00:03,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-14 18:00:03,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 18:00:03,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 18:00:03,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:00:03,524 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:00:03,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 18:00:03,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:00:03,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:00:03,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:00:03,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:00:03,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:00:03,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:00:03,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:00:03,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:00:03,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:00:03,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:00:03,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:00:03,617 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:00:03,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:00:03,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:00:03,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:00:03,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:00:03,622 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-10-14 18:00:03,623 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [775891073] [2020-10-14 18:00:03,623 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:00:03,623 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 18:00:03,623 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91983199] [2020-10-14 18:00:03,624 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 18:00:03,624 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:00:03,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 18:00:03,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 18:00:03,626 INFO L87 Difference]: Start difference. First operand 58 states and 65 transitions. Second operand 8 states. [2020-10-14 18:00:03,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:00:03,827 INFO L93 Difference]: Finished difference Result 112 states and 132 transitions. [2020-10-14 18:00:03,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 18:00:03,827 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 53 [2020-10-14 18:00:03,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:00:03,828 INFO L225 Difference]: With dead ends: 112 [2020-10-14 18:00:03,829 INFO L226 Difference]: Without dead ends: 65 [2020-10-14 18:00:03,830 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 18:00:03,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-10-14 18:00:03,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2020-10-14 18:00:03,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-14 18:00:03,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 72 transitions. [2020-10-14 18:00:03,843 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 72 transitions. Word has length 53 [2020-10-14 18:00:03,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:00:03,843 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 72 transitions. [2020-10-14 18:00:03,843 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 18:00:03,843 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 72 transitions. [2020-10-14 18:00:03,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-14 18:00:03,850 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:00:03,851 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:00:03,851 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 18:00:03,852 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:00:03,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:00:03,854 INFO L82 PathProgramCache]: Analyzing trace with hash 451754087, now seen corresponding path program 5 times [2020-10-14 18:00:03,854 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:00:03,854 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1640551267] [2020-10-14 18:00:03,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:00:03,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:00:03,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:00:03,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:00:03,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:00:03,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:00:03,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:00:06,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:00:08,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:00:08,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-14 18:00:08,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 18:00:08,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 18:00:08,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:00:08,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:00:08,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 18:00:08,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-14 18:00:08,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 18:00:08,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:00:08,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:00:08,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:00:08,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:00:08,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:00:08,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:00:08,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:00:08,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:00:08,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:00:08,978 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:00:08,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:00:08,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:00:08,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:00:08,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:00:08,987 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2020-10-14 18:00:08,988 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1640551267] [2020-10-14 18:00:08,988 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:00:08,988 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 18:00:08,989 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284425198] [2020-10-14 18:00:08,989 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 18:00:08,989 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:00:08,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 18:00:08,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-14 18:00:08,990 INFO L87 Difference]: Start difference. First operand 65 states and 72 transitions. Second operand 9 states. [2020-10-14 18:00:09,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:00:09,196 INFO L93 Difference]: Finished difference Result 125 states and 145 transitions. [2020-10-14 18:00:09,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 18:00:09,196 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 60 [2020-10-14 18:00:09,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:00:09,197 INFO L225 Difference]: With dead ends: 125 [2020-10-14 18:00:09,198 INFO L226 Difference]: Without dead ends: 72 [2020-10-14 18:00:09,199 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-14 18:00:09,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-14 18:00:09,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2020-10-14 18:00:09,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-10-14 18:00:09,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 79 transitions. [2020-10-14 18:00:09,207 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 79 transitions. Word has length 60 [2020-10-14 18:00:09,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:00:09,207 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 79 transitions. [2020-10-14 18:00:09,207 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 18:00:09,207 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 79 transitions. [2020-10-14 18:00:09,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-14 18:00:09,208 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:00:09,208 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:00:09,209 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 18:00:09,209 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:00:09,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:00:09,209 INFO L82 PathProgramCache]: Analyzing trace with hash 757831402, now seen corresponding path program 6 times [2020-10-14 18:00:09,210 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:00:09,210 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [142018209] [2020-10-14 18:00:09,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:00:09,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:00:09,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:00:09,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:00:09,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:00:09,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:00:09,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:00:13,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:00:14,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:00:14,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 18:00:14,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 18:00:14,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 18:00:14,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:00:14,228 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:00:14,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 18:00:14,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-14 18:00:14,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 18:00:14,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:00:14,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:00:14,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:00:14,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:00:14,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:00:14,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:00:14,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:00:14,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:00:14,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:00:14,323 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:00:14,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:00:14,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:00:14,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:00:14,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:00:14,328 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2020-10-14 18:00:14,329 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [142018209] [2020-10-14 18:00:14,329 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:00:14,329 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 18:00:14,329 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711699973] [2020-10-14 18:00:14,330 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 18:00:14,330 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:00:14,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 18:00:14,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-14 18:00:14,331 INFO L87 Difference]: Start difference. First operand 72 states and 79 transitions. Second operand 10 states. [2020-10-14 18:00:14,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:00:14,552 INFO L93 Difference]: Finished difference Result 138 states and 158 transitions. [2020-10-14 18:00:14,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 18:00:14,552 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 67 [2020-10-14 18:00:14,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:00:14,553 INFO L225 Difference]: With dead ends: 138 [2020-10-14 18:00:14,553 INFO L226 Difference]: Without dead ends: 79 [2020-10-14 18:00:14,554 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-14 18:00:14,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-10-14 18:00:14,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2020-10-14 18:00:14,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-14 18:00:14,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 86 transitions. [2020-10-14 18:00:14,571 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 86 transitions. Word has length 67 [2020-10-14 18:00:14,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:00:14,572 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 86 transitions. [2020-10-14 18:00:14,575 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 18:00:14,575 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 86 transitions. [2020-10-14 18:00:14,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-14 18:00:14,576 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:00:14,576 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:00:14,576 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 18:00:14,576 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:00:14,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:00:14,577 INFO L82 PathProgramCache]: Analyzing trace with hash -1686307833, now seen corresponding path program 7 times [2020-10-14 18:00:14,577 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:00:14,577 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1348187927] [2020-10-14 18:00:14,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:00:14,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:00:14,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:00:14,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:00:14,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:00:14,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:00:14,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:00:19,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:00:19,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-14 18:00:19,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 18:00:19,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 18:00:19,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:00:19,593 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:00:19,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 18:00:19,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-14 18:00:19,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 18:00:19,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:00:19,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:00:19,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:00:19,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:00:19,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:00:19,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:00:19,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:00:19,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:00:19,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:00:19,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:00:19,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:00:19,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:00:19,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:00:19,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:00:19,704 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2020-10-14 18:00:19,704 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1348187927] [2020-10-14 18:00:19,705 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:00:19,705 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 18:00:19,705 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100484835] [2020-10-14 18:00:19,706 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 18:00:19,706 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:00:19,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 18:00:19,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-14 18:00:19,707 INFO L87 Difference]: Start difference. First operand 79 states and 86 transitions. Second operand 11 states. [2020-10-14 18:00:19,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:00:19,937 INFO L93 Difference]: Finished difference Result 151 states and 171 transitions. [2020-10-14 18:00:19,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 18:00:19,937 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 74 [2020-10-14 18:00:19,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:00:19,939 INFO L225 Difference]: With dead ends: 151 [2020-10-14 18:00:19,939 INFO L226 Difference]: Without dead ends: 86 [2020-10-14 18:00:19,941 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-14 18:00:19,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-14 18:00:19,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2020-10-14 18:00:19,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-10-14 18:00:19,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 93 transitions. [2020-10-14 18:00:19,949 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 93 transitions. Word has length 74 [2020-10-14 18:00:19,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:00:19,950 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 93 transitions. [2020-10-14 18:00:19,950 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 18:00:19,950 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 93 transitions. [2020-10-14 18:00:19,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-14 18:00:19,951 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:00:19,951 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:00:19,951 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 18:00:19,952 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:00:19,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:00:19,952 INFO L82 PathProgramCache]: Analyzing trace with hash 494861386, now seen corresponding path program 8 times [2020-10-14 18:00:19,952 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:00:19,952 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2065967874] [2020-10-14 18:00:19,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:00:19,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:00:19,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:00:19,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:00:20,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:00:20,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:00:20,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:00:24,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:00:24,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-14 18:00:24,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 18:00:24,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-14 18:00:24,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:00:24,972 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:00:24,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 18:00:24,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-10-14 18:00:24,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 18:00:24,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:00:25,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:00:25,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:00:25,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:00:25,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:00:25,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:00:25,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:00:25,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:00:25,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:00:25,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:00:25,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:00:25,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:00:25,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:00:25,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:00:25,090 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2020-10-14 18:00:25,094 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2065967874] [2020-10-14 18:00:25,095 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:00:25,095 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 18:00:25,095 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234375213] [2020-10-14 18:00:25,095 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 18:00:25,096 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:00:25,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 18:00:25,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-14 18:00:25,099 INFO L87 Difference]: Start difference. First operand 86 states and 93 transitions. Second operand 12 states. [2020-10-14 18:00:25,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:00:25,326 INFO L93 Difference]: Finished difference Result 164 states and 184 transitions. [2020-10-14 18:00:25,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 18:00:25,327 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 81 [2020-10-14 18:00:25,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:00:25,328 INFO L225 Difference]: With dead ends: 164 [2020-10-14 18:00:25,328 INFO L226 Difference]: Without dead ends: 93 [2020-10-14 18:00:25,330 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-14 18:00:25,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-10-14 18:00:25,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2020-10-14 18:00:25,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-10-14 18:00:25,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 100 transitions. [2020-10-14 18:00:25,339 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 100 transitions. Word has length 81 [2020-10-14 18:00:25,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:00:25,340 INFO L479 AbstractCegarLoop]: Abstraction has 93 states and 100 transitions. [2020-10-14 18:00:25,340 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 18:00:25,340 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 100 transitions. [2020-10-14 18:00:25,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-14 18:00:25,340 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:00:25,341 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:00:25,341 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 18:00:25,341 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:00:25,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:00:25,342 INFO L82 PathProgramCache]: Analyzing trace with hash -938874969, now seen corresponding path program 9 times [2020-10-14 18:00:25,342 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:00:25,342 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [55701532] [2020-10-14 18:00:25,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:00:25,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:00:25,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:00:25,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:00:25,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:00:25,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:00:25,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:00:30,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:00:30,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-14 18:00:30,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 18:00:30,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 18:00:30,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:00:30,355 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:00:30,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 18:00:30,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-14 18:00:30,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 18:00:30,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:00:30,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:00:30,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:00:30,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:00:30,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:00:30,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:00:30,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:00:30,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:00:30,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:00:30,503 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:00:30,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:00:30,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:00:30,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:00:30,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:00:30,515 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2020-10-14 18:00:30,516 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [55701532] [2020-10-14 18:00:30,516 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:00:30,517 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 18:00:30,518 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780453777] [2020-10-14 18:00:30,518 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 18:00:30,518 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:00:30,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 18:00:30,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-14 18:00:30,521 INFO L87 Difference]: Start difference. First operand 93 states and 100 transitions. Second operand 13 states. [2020-10-14 18:00:30,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:00:30,866 INFO L93 Difference]: Finished difference Result 177 states and 197 transitions. [2020-10-14 18:00:30,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 18:00:30,867 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 88 [2020-10-14 18:00:30,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:00:30,868 INFO L225 Difference]: With dead ends: 177 [2020-10-14 18:00:30,868 INFO L226 Difference]: Without dead ends: 100 [2020-10-14 18:00:30,870 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-14 18:00:30,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-10-14 18:00:30,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2020-10-14 18:00:30,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-10-14 18:00:30,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 107 transitions. [2020-10-14 18:00:30,898 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 107 transitions. Word has length 88 [2020-10-14 18:00:30,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:00:30,900 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 107 transitions. [2020-10-14 18:00:30,900 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 18:00:30,900 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 107 transitions. [2020-10-14 18:00:30,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-14 18:00:30,904 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:00:30,904 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:00:30,904 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 18:00:30,905 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:00:30,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:00:30,905 INFO L82 PathProgramCache]: Analyzing trace with hash -1207453270, now seen corresponding path program 10 times [2020-10-14 18:00:30,905 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:00:30,906 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2055593500] [2020-10-14 18:00:30,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:00:30,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:00:30,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:00:30,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:00:31,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:00:31,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:00:31,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:00:35,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:00:35,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-14 18:00:35,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 18:00:35,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 18:00:35,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:00:35,924 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:00:35,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 18:00:35,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-14 18:00:35,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 18:00:35,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:00:36,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:00:36,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:00:36,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:00:36,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:00:36,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:00:36,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:00:36,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:00:36,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:00:36,074 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:00:36,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:00:36,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:00:36,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:00:36,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:00:36,088 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2020-10-14 18:00:36,088 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2055593500] [2020-10-14 18:00:36,090 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:00:36,090 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 18:00:36,090 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300511761] [2020-10-14 18:00:36,091 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 18:00:36,091 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:00:36,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 18:00:36,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-14 18:00:36,094 INFO L87 Difference]: Start difference. First operand 100 states and 107 transitions. Second operand 14 states. [2020-10-14 18:00:36,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:00:36,399 INFO L93 Difference]: Finished difference Result 190 states and 210 transitions. [2020-10-14 18:00:36,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 18:00:36,399 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 95 [2020-10-14 18:00:36,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:00:36,401 INFO L225 Difference]: With dead ends: 190 [2020-10-14 18:00:36,401 INFO L226 Difference]: Without dead ends: 107 [2020-10-14 18:00:36,402 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-14 18:00:36,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-10-14 18:00:36,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2020-10-14 18:00:36,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-10-14 18:00:36,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 114 transitions. [2020-10-14 18:00:36,428 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 114 transitions. Word has length 95 [2020-10-14 18:00:36,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:00:36,429 INFO L479 AbstractCegarLoop]: Abstraction has 107 states and 114 transitions. [2020-10-14 18:00:36,429 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 18:00:36,429 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 114 transitions. [2020-10-14 18:00:36,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-14 18:00:36,432 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:00:36,433 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:00:36,433 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 18:00:36,433 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:00:36,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:00:36,434 INFO L82 PathProgramCache]: Analyzing trace with hash 1082522439, now seen corresponding path program 11 times [2020-10-14 18:00:36,434 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:00:36,434 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [80903786] [2020-10-14 18:00:36,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:00:36,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:00:36,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:00:36,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:00:36,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:00:36,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:00:36,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:00:41,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:00:41,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-14 18:00:41,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 18:00:41,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-14 18:00:41,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:00:41,457 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:00:41,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 18:00:41,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-14 18:00:41,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 18:00:41,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:00:41,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:00:41,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:00:41,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:00:41,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:00:41,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:00:41,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:00:41,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:00:41,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:00:41,603 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:00:41,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:00:41,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:00:41,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:00:41,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:00:41,609 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2020-10-14 18:00:41,609 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [80903786] [2020-10-14 18:00:41,610 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:00:41,610 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 18:00:41,610 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803557773] [2020-10-14 18:00:41,610 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 18:00:41,611 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:00:41,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 18:00:41,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-14 18:00:41,611 INFO L87 Difference]: Start difference. First operand 107 states and 114 transitions. Second operand 15 states. [2020-10-14 18:00:41,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:00:41,907 INFO L93 Difference]: Finished difference Result 203 states and 223 transitions. [2020-10-14 18:00:41,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 18:00:41,908 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 102 [2020-10-14 18:00:41,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:00:41,909 INFO L225 Difference]: With dead ends: 203 [2020-10-14 18:00:41,909 INFO L226 Difference]: Without dead ends: 114 [2020-10-14 18:00:41,911 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-14 18:00:41,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-10-14 18:00:41,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2020-10-14 18:00:41,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-10-14 18:00:41,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 121 transitions. [2020-10-14 18:00:41,919 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 121 transitions. Word has length 102 [2020-10-14 18:00:41,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:00:41,919 INFO L479 AbstractCegarLoop]: Abstraction has 114 states and 121 transitions. [2020-10-14 18:00:41,920 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 18:00:41,920 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 121 transitions. [2020-10-14 18:00:41,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-14 18:00:41,921 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:00:41,921 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:00:41,921 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 18:00:41,921 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:00:41,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:00:41,922 INFO L82 PathProgramCache]: Analyzing trace with hash -1458319606, now seen corresponding path program 12 times [2020-10-14 18:00:41,922 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:00:41,922 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [986599055] [2020-10-14 18:00:41,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:00:41,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:00:41,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:00:41,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:00:42,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:00:42,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:00:42,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:00:46,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:00:46,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-14 18:00:46,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 18:00:46,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 18:00:46,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:00:46,938 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:00:46,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 18:00:46,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-14 18:00:46,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 18:00:46,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:00:47,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:00:47,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:00:47,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:00:47,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:00:47,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:00:47,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:00:47,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:00:47,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:00:47,105 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:00:47,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:00:47,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:00:47,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:00:47,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:00:47,112 INFO L134 CoverageAnalysis]: Checked inductivity of 546 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 468 trivial. 0 not checked. [2020-10-14 18:00:47,113 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [986599055] [2020-10-14 18:00:47,113 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:00:47,113 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 18:00:47,113 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847551038] [2020-10-14 18:00:47,114 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 18:00:47,114 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:00:47,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 18:00:47,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-14 18:00:47,115 INFO L87 Difference]: Start difference. First operand 114 states and 121 transitions. Second operand 16 states. [2020-10-14 18:00:47,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:00:47,443 INFO L93 Difference]: Finished difference Result 216 states and 236 transitions. [2020-10-14 18:00:47,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 18:00:47,444 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 109 [2020-10-14 18:00:47,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:00:47,446 INFO L225 Difference]: With dead ends: 216 [2020-10-14 18:00:47,446 INFO L226 Difference]: Without dead ends: 121 [2020-10-14 18:00:47,447 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-14 18:00:47,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-10-14 18:00:47,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2020-10-14 18:00:47,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-10-14 18:00:47,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 128 transitions. [2020-10-14 18:00:47,455 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 128 transitions. Word has length 109 [2020-10-14 18:00:47,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:00:47,455 INFO L479 AbstractCegarLoop]: Abstraction has 121 states and 128 transitions. [2020-10-14 18:00:47,455 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 18:00:47,455 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 128 transitions. [2020-10-14 18:00:47,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-14 18:00:47,456 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:00:47,456 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:00:47,457 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 18:00:47,457 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:00:47,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:00:47,457 INFO L82 PathProgramCache]: Analyzing trace with hash -882690329, now seen corresponding path program 13 times [2020-10-14 18:00:47,457 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:00:47,458 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1000102073] [2020-10-14 18:00:47,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:00:47,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:00:47,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:00:47,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:00:47,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:00:47,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:00:47,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:00:52,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:00:52,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-14 18:00:52,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 18:00:52,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-14 18:00:52,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:00:52,480 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:00:52,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 18:00:52,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-14 18:00:52,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 18:00:52,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:00:52,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:00:52,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:00:52,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:00:52,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:00:52,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:00:52,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:00:52,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:00:52,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:00:52,687 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:00:52,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:00:52,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:00:52,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:00:52,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:00:52,698 INFO L134 CoverageAnalysis]: Checked inductivity of 637 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 546 trivial. 0 not checked. [2020-10-14 18:00:52,698 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1000102073] [2020-10-14 18:00:52,699 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:00:52,699 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 18:00:52,699 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953459361] [2020-10-14 18:00:52,701 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 18:00:52,701 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:00:52,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 18:00:52,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-14 18:00:52,703 INFO L87 Difference]: Start difference. First operand 121 states and 128 transitions. Second operand 17 states. [2020-10-14 18:00:53,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:00:53,047 INFO L93 Difference]: Finished difference Result 229 states and 249 transitions. [2020-10-14 18:00:53,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 18:00:53,048 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 116 [2020-10-14 18:00:53,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:00:53,049 INFO L225 Difference]: With dead ends: 229 [2020-10-14 18:00:53,049 INFO L226 Difference]: Without dead ends: 128 [2020-10-14 18:00:53,050 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-14 18:00:53,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-10-14 18:00:53,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2020-10-14 18:00:53,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-10-14 18:00:53,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 135 transitions. [2020-10-14 18:00:53,056 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 135 transitions. Word has length 116 [2020-10-14 18:00:53,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:00:53,057 INFO L479 AbstractCegarLoop]: Abstraction has 128 states and 135 transitions. [2020-10-14 18:00:53,057 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 18:00:53,057 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 135 transitions. [2020-10-14 18:00:53,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-14 18:00:53,058 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:00:53,058 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:00:53,059 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 18:00:53,059 INFO L427 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:00:53,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:00:53,059 INFO L82 PathProgramCache]: Analyzing trace with hash 108084330, now seen corresponding path program 14 times [2020-10-14 18:00:53,059 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:00:53,060 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1929247241] [2020-10-14 18:00:53,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:00:53,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:00:53,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:00:53,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:00:53,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:00:53,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:00:53,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:00:58,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:00:58,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-14 18:00:58,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 18:00:58,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-14 18:00:58,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:00:58,085 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:00:58,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 18:00:58,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:00:58,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 18:00:58,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:00:58,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:00:58,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:00:58,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:00:58,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:00:58,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:00:58,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:00:58,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:00:58,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:00:58,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:00:58,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:00:58,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:00:58,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:00:58,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:00:58,298 INFO L134 CoverageAnalysis]: Checked inductivity of 735 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 630 trivial. 0 not checked. [2020-10-14 18:00:58,298 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1929247241] [2020-10-14 18:00:58,298 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:00:58,298 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-14 18:00:58,299 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703498826] [2020-10-14 18:00:58,299 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-14 18:00:58,299 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:00:58,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-14 18:00:58,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-14 18:00:58,300 INFO L87 Difference]: Start difference. First operand 128 states and 135 transitions. Second operand 18 states. [2020-10-14 18:00:58,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:00:58,676 INFO L93 Difference]: Finished difference Result 242 states and 262 transitions. [2020-10-14 18:00:58,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 18:00:58,676 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 123 [2020-10-14 18:00:58,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:00:58,679 INFO L225 Difference]: With dead ends: 242 [2020-10-14 18:00:58,680 INFO L226 Difference]: Without dead ends: 135 [2020-10-14 18:00:58,680 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-14 18:00:58,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-10-14 18:00:58,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2020-10-14 18:00:58,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-10-14 18:00:58,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 142 transitions. [2020-10-14 18:00:58,689 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 142 transitions. Word has length 123 [2020-10-14 18:00:58,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:00:58,689 INFO L479 AbstractCegarLoop]: Abstraction has 135 states and 142 transitions. [2020-10-14 18:00:58,689 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-14 18:00:58,689 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 142 transitions. [2020-10-14 18:00:58,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-14 18:00:58,690 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:00:58,691 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:00:58,691 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 18:00:58,691 INFO L427 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:00:58,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:00:58,691 INFO L82 PathProgramCache]: Analyzing trace with hash 1972607623, now seen corresponding path program 15 times [2020-10-14 18:00:58,692 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:00:58,692 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1748229067] [2020-10-14 18:00:58,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:00:58,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:00:58,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:00:58,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:00:58,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:00:58,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:00:59,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:01:03,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:01:03,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-14 18:01:03,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 18:01:03,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 18:01:03,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:01:03,708 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:01:03,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 18:01:03,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-14 18:01:03,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 18:01:03,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:01:03,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:01:03,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:01:03,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:01:03,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:01:03,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:01:03,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:01:03,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:01:03,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:01:03,920 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:01:03,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:01:03,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:01:03,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:01:03,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:01:03,928 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 720 trivial. 0 not checked. [2020-10-14 18:01:03,928 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1748229067] [2020-10-14 18:01:03,928 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:01:03,929 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-14 18:01:03,929 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659853841] [2020-10-14 18:01:03,929 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-14 18:01:03,929 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:01:03,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-14 18:01:03,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-14 18:01:03,930 INFO L87 Difference]: Start difference. First operand 135 states and 142 transitions. Second operand 19 states. [2020-10-14 18:01:04,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:01:04,276 INFO L93 Difference]: Finished difference Result 255 states and 275 transitions. [2020-10-14 18:01:04,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 18:01:04,277 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 130 [2020-10-14 18:01:04,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:01:04,278 INFO L225 Difference]: With dead ends: 255 [2020-10-14 18:01:04,279 INFO L226 Difference]: Without dead ends: 142 [2020-10-14 18:01:04,280 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-14 18:01:04,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-10-14 18:01:04,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 142. [2020-10-14 18:01:04,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-14 18:01:04,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 149 transitions. [2020-10-14 18:01:04,288 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 149 transitions. Word has length 130 [2020-10-14 18:01:04,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:01:04,288 INFO L479 AbstractCegarLoop]: Abstraction has 142 states and 149 transitions. [2020-10-14 18:01:04,288 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-14 18:01:04,288 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 149 transitions. [2020-10-14 18:01:04,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-10-14 18:01:04,290 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:01:04,290 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:01:04,290 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 18:01:04,290 INFO L427 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:01:04,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:01:04,291 INFO L82 PathProgramCache]: Analyzing trace with hash 795738570, now seen corresponding path program 16 times [2020-10-14 18:01:04,291 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:01:04,291 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1032089891] [2020-10-14 18:01:04,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:01:04,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:01:04,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:01:04,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:01:04,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:01:04,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:01:04,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:01:09,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:01:09,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-14 18:01:09,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 18:01:09,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-14 18:01:09,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:01:09,320 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:01:09,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-14 18:01:09,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-10-14 18:01:09,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 18:01:09,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:01:09,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:01:09,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:01:09,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:01:09,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:01:09,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:01:09,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:01:09,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:01:09,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:01:09,574 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:01:09,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:01:09,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:01:09,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:01:09,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:01:09,583 INFO L134 CoverageAnalysis]: Checked inductivity of 952 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 816 trivial. 0 not checked. [2020-10-14 18:01:09,583 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1032089891] [2020-10-14 18:01:09,583 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:01:09,584 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-14 18:01:09,584 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324060928] [2020-10-14 18:01:09,584 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-14 18:01:09,584 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:01:09,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-14 18:01:09,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-14 18:01:09,585 INFO L87 Difference]: Start difference. First operand 142 states and 149 transitions. Second operand 20 states. [2020-10-14 18:01:09,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:01:09,977 INFO L93 Difference]: Finished difference Result 268 states and 288 transitions. [2020-10-14 18:01:09,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-14 18:01:09,977 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 137 [2020-10-14 18:01:09,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:01:09,979 INFO L225 Difference]: With dead ends: 268 [2020-10-14 18:01:09,979 INFO L226 Difference]: Without dead ends: 149 [2020-10-14 18:01:09,980 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-14 18:01:09,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-10-14 18:01:09,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2020-10-14 18:01:09,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-10-14 18:01:09,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 156 transitions. [2020-10-14 18:01:09,987 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 156 transitions. Word has length 137 [2020-10-14 18:01:09,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:01:09,988 INFO L479 AbstractCegarLoop]: Abstraction has 149 states and 156 transitions. [2020-10-14 18:01:09,988 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-14 18:01:09,988 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 156 transitions. [2020-10-14 18:01:09,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-10-14 18:01:09,989 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:01:09,989 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:01:09,989 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 18:01:09,990 INFO L427 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:01:09,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:01:09,990 INFO L82 PathProgramCache]: Analyzing trace with hash -1299634649, now seen corresponding path program 17 times [2020-10-14 18:01:09,990 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:01:09,990 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2028842877] [2020-10-14 18:01:09,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:01:10,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:01:10,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:01:10,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:01:10,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:01:10,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:01:10,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:01:15,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:01:15,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-14 18:01:15,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 18:01:15,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-14 18:01:15,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:01:15,011 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:01:15,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-14 18:01:15,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-14 18:01:15,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 18:01:15,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:01:15,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:01:15,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:01:15,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:01:15,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:01:15,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:01:15,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:01:15,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:01:15,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:01:15,243 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:01:15,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:01:15,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:01:15,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:01:15,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:01:15,252 INFO L134 CoverageAnalysis]: Checked inductivity of 1071 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 918 trivial. 0 not checked. [2020-10-14 18:01:15,253 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2028842877] [2020-10-14 18:01:15,253 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:01:15,253 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-14 18:01:15,253 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803757782] [2020-10-14 18:01:15,254 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-14 18:01:15,254 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:01:15,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-14 18:01:15,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-14 18:01:15,255 INFO L87 Difference]: Start difference. First operand 149 states and 156 transitions. Second operand 21 states. [2020-10-14 18:01:15,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:01:15,655 INFO L93 Difference]: Finished difference Result 281 states and 301 transitions. [2020-10-14 18:01:15,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-14 18:01:15,655 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 144 [2020-10-14 18:01:15,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:01:15,657 INFO L225 Difference]: With dead ends: 281 [2020-10-14 18:01:15,657 INFO L226 Difference]: Without dead ends: 156 [2020-10-14 18:01:15,658 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-14 18:01:15,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2020-10-14 18:01:15,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 156. [2020-10-14 18:01:15,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-10-14 18:01:15,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 163 transitions. [2020-10-14 18:01:15,665 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 163 transitions. Word has length 144 [2020-10-14 18:01:15,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:01:15,666 INFO L479 AbstractCegarLoop]: Abstraction has 156 states and 163 transitions. [2020-10-14 18:01:15,666 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-14 18:01:15,666 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 163 transitions. [2020-10-14 18:01:15,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-10-14 18:01:15,667 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:01:15,668 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:01:15,668 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 18:01:15,668 INFO L427 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:01:15,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:01:15,668 INFO L82 PathProgramCache]: Analyzing trace with hash -1395122390, now seen corresponding path program 18 times [2020-10-14 18:01:15,669 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:01:15,669 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1020937011] [2020-10-14 18:01:15,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:01:15,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:01:15,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:01:15,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:01:15,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:01:15,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:01:16,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:01:20,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:01:20,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-10-14 18:01:20,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 18:01:20,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-14 18:01:20,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:01:20,690 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:01:20,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-14 18:01:20,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-14 18:01:20,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 18:01:20,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:01:20,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:01:20,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:01:20,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:01:20,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:01:20,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:01:20,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:01:20,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:01:20,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:01:20,978 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:01:20,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:01:20,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:01:20,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:01:20,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:01:20,988 INFO L134 CoverageAnalysis]: Checked inductivity of 1197 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 1026 trivial. 0 not checked. [2020-10-14 18:01:20,989 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1020937011] [2020-10-14 18:01:20,989 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:01:20,989 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-14 18:01:20,989 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020533843] [2020-10-14 18:01:20,989 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-14 18:01:20,990 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:01:20,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-14 18:01:20,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-14 18:01:20,990 INFO L87 Difference]: Start difference. First operand 156 states and 163 transitions. Second operand 22 states. [2020-10-14 18:01:21,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:01:21,408 INFO L93 Difference]: Finished difference Result 294 states and 314 transitions. [2020-10-14 18:01:21,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-14 18:01:21,409 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 151 [2020-10-14 18:01:21,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:01:21,410 INFO L225 Difference]: With dead ends: 294 [2020-10-14 18:01:21,410 INFO L226 Difference]: Without dead ends: 163 [2020-10-14 18:01:21,412 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-14 18:01:21,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-10-14 18:01:21,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2020-10-14 18:01:21,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-10-14 18:01:21,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 170 transitions. [2020-10-14 18:01:21,420 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 170 transitions. Word has length 151 [2020-10-14 18:01:21,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:01:21,420 INFO L479 AbstractCegarLoop]: Abstraction has 163 states and 170 transitions. [2020-10-14 18:01:21,420 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-14 18:01:21,420 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 170 transitions. [2020-10-14 18:01:21,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-14 18:01:21,422 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:01:21,422 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:01:21,422 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 18:01:21,422 INFO L427 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:01:21,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:01:21,423 INFO L82 PathProgramCache]: Analyzing trace with hash 2083903943, now seen corresponding path program 19 times [2020-10-14 18:01:21,423 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:01:21,423 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1304324690] [2020-10-14 18:01:21,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:01:21,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:01:21,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:01:21,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:01:21,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:01:21,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:01:22,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:01:26,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:01:26,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-14 18:01:26,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 18:01:26,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-14 18:01:26,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:01:26,454 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:01:26,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-14 18:01:26,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-10-14 18:01:26,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 18:01:26,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:01:26,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:01:26,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:01:26,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:01:26,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:01:26,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:01:26,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:01:26,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:01:26,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:01:26,761 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:01:26,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:01:26,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:01:26,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:01:26,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:01:26,772 INFO L134 CoverageAnalysis]: Checked inductivity of 1330 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 1140 trivial. 0 not checked. [2020-10-14 18:01:26,772 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1304324690] [2020-10-14 18:01:26,772 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:01:26,772 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-14 18:01:26,772 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110531804] [2020-10-14 18:01:26,773 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-14 18:01:26,773 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:01:26,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-14 18:01:26,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-14 18:01:26,774 INFO L87 Difference]: Start difference. First operand 163 states and 170 transitions. Second operand 23 states. [2020-10-14 18:01:27,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:01:27,183 INFO L93 Difference]: Finished difference Result 307 states and 327 transitions. [2020-10-14 18:01:27,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-14 18:01:27,184 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 158 [2020-10-14 18:01:27,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:01:27,185 INFO L225 Difference]: With dead ends: 307 [2020-10-14 18:01:27,186 INFO L226 Difference]: Without dead ends: 170 [2020-10-14 18:01:27,187 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-14 18:01:27,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-10-14 18:01:27,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2020-10-14 18:01:27,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2020-10-14 18:01:27,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 177 transitions. [2020-10-14 18:01:27,193 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 177 transitions. Word has length 158 [2020-10-14 18:01:27,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:01:27,193 INFO L479 AbstractCegarLoop]: Abstraction has 170 states and 177 transitions. [2020-10-14 18:01:27,193 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-14 18:01:27,194 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 177 transitions. [2020-10-14 18:01:27,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-10-14 18:01:27,195 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:01:27,196 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:01:27,196 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-14 18:01:27,196 INFO L427 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:01:27,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:01:27,196 INFO L82 PathProgramCache]: Analyzing trace with hash 285054090, now seen corresponding path program 20 times [2020-10-14 18:01:27,197 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:01:27,197 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1200113243] [2020-10-14 18:01:27,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:01:27,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:01:27,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:01:27,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:01:27,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:01:27,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:01:27,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:01:32,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:01:32,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-10-14 18:01:32,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 18:01:32,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-14 18:01:32,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:01:32,241 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:01:32,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-14 18:01:32,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-14 18:01:32,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 18:01:32,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:01:32,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:01:32,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:01:32,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:01:32,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:01:32,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:01:32,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:01:32,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:01:32,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:01:32,578 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:01:32,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:01:32,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:01:32,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:01:32,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:01:32,590 INFO L134 CoverageAnalysis]: Checked inductivity of 1470 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 1260 trivial. 0 not checked. [2020-10-14 18:01:32,590 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1200113243] [2020-10-14 18:01:32,590 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:01:32,590 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-14 18:01:32,591 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665552571] [2020-10-14 18:01:32,591 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-14 18:01:32,591 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:01:32,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-14 18:01:32,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2020-10-14 18:01:32,592 INFO L87 Difference]: Start difference. First operand 170 states and 177 transitions. Second operand 24 states. [2020-10-14 18:01:33,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:01:33,055 INFO L93 Difference]: Finished difference Result 320 states and 340 transitions. [2020-10-14 18:01:33,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-14 18:01:33,056 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 165 [2020-10-14 18:01:33,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:01:33,057 INFO L225 Difference]: With dead ends: 320 [2020-10-14 18:01:33,057 INFO L226 Difference]: Without dead ends: 177 [2020-10-14 18:01:33,059 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2020-10-14 18:01:33,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2020-10-14 18:01:33,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2020-10-14 18:01:33,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2020-10-14 18:01:33,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 184 transitions. [2020-10-14 18:01:33,066 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 184 transitions. Word has length 165 [2020-10-14 18:01:33,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:01:33,066 INFO L479 AbstractCegarLoop]: Abstraction has 177 states and 184 transitions. [2020-10-14 18:01:33,066 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-14 18:01:33,066 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 184 transitions. [2020-10-14 18:01:33,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-10-14 18:01:33,068 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:01:33,068 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 21, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:01:33,068 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-14 18:01:33,068 INFO L427 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:01:33,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:01:33,069 INFO L82 PathProgramCache]: Analyzing trace with hash 1930147175, now seen corresponding path program 21 times [2020-10-14 18:01:33,069 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:01:33,069 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1220451194] [2020-10-14 18:01:33,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:01:33,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:01:33,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:01:33,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:01:33,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:01:33,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:01:33,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:01:38,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:01:38,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-14 18:01:38,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 18:01:38,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-14 18:01:38,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:01:38,106 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:01:38,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-14 18:01:38,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:01:38,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 18:01:38,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:01:38,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:01:38,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:01:38,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:01:38,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:01:38,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:01:38,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:01:38,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:01:38,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:01:38,478 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:01:38,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:01:38,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:01:38,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:01:38,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:01:38,491 INFO L134 CoverageAnalysis]: Checked inductivity of 1617 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 1386 trivial. 0 not checked. [2020-10-14 18:01:38,491 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1220451194] [2020-10-14 18:01:38,491 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:01:38,492 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-14 18:01:38,492 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95611904] [2020-10-14 18:01:38,492 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-14 18:01:38,492 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:01:38,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-14 18:01:38,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2020-10-14 18:01:38,493 INFO L87 Difference]: Start difference. First operand 177 states and 184 transitions. Second operand 25 states. [2020-10-14 18:01:38,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:01:38,900 INFO L93 Difference]: Finished difference Result 333 states and 353 transitions. [2020-10-14 18:01:38,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-14 18:01:38,903 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 172 [2020-10-14 18:01:38,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:01:38,905 INFO L225 Difference]: With dead ends: 333 [2020-10-14 18:01:38,905 INFO L226 Difference]: Without dead ends: 184 [2020-10-14 18:01:38,906 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2020-10-14 18:01:38,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2020-10-14 18:01:38,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 184. [2020-10-14 18:01:38,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2020-10-14 18:01:38,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 191 transitions. [2020-10-14 18:01:38,913 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 191 transitions. Word has length 172 [2020-10-14 18:01:38,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:01:38,913 INFO L479 AbstractCegarLoop]: Abstraction has 184 states and 191 transitions. [2020-10-14 18:01:38,913 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-14 18:01:38,913 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 191 transitions. [2020-10-14 18:01:38,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-10-14 18:01:38,915 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:01:38,915 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:01:38,915 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-14 18:01:38,915 INFO L427 AbstractCegarLoop]: === Iteration 23 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:01:38,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:01:38,916 INFO L82 PathProgramCache]: Analyzing trace with hash -676568598, now seen corresponding path program 22 times [2020-10-14 18:01:38,916 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:01:38,916 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1876815767] [2020-10-14 18:01:38,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:01:38,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:01:38,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:01:39,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:01:39,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:01:39,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:01:39,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:01:43,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:01:43,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-14 18:01:43,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 18:01:43,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-14 18:01:43,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:01:43,945 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:01:43,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-14 18:01:43,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:01:43,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 18:01:43,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:01:44,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:01:44,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:01:44,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:01:44,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:01:44,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:01:44,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:01:44,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:01:44,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:01:44,335 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:01:44,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:01:44,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:01:44,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:01:44,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:01:44,349 INFO L134 CoverageAnalysis]: Checked inductivity of 1771 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 1518 trivial. 0 not checked. [2020-10-14 18:01:44,349 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1876815767] [2020-10-14 18:01:44,349 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:01:44,349 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-14 18:01:44,350 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998818955] [2020-10-14 18:01:44,350 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-14 18:01:44,350 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:01:44,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-14 18:01:44,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2020-10-14 18:01:44,351 INFO L87 Difference]: Start difference. First operand 184 states and 191 transitions. Second operand 26 states. [2020-10-14 18:01:44,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:01:44,853 INFO L93 Difference]: Finished difference Result 346 states and 366 transitions. [2020-10-14 18:01:44,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-14 18:01:44,853 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 179 [2020-10-14 18:01:44,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:01:44,855 INFO L225 Difference]: With dead ends: 346 [2020-10-14 18:01:44,855 INFO L226 Difference]: Without dead ends: 191 [2020-10-14 18:01:44,856 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2020-10-14 18:01:44,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2020-10-14 18:01:44,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 191. [2020-10-14 18:01:44,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2020-10-14 18:01:44,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 198 transitions. [2020-10-14 18:01:44,864 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 198 transitions. Word has length 179 [2020-10-14 18:01:44,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:01:44,864 INFO L479 AbstractCegarLoop]: Abstraction has 191 states and 198 transitions. [2020-10-14 18:01:44,864 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-14 18:01:44,865 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 198 transitions. [2020-10-14 18:01:44,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2020-10-14 18:01:44,866 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:01:44,866 INFO L422 BasicCegarLoop]: trace histogram [23, 23, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:01:44,866 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-14 18:01:44,866 INFO L427 AbstractCegarLoop]: === Iteration 24 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:01:44,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:01:44,867 INFO L82 PathProgramCache]: Analyzing trace with hash -33769209, now seen corresponding path program 23 times [2020-10-14 18:01:44,867 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:01:44,867 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1851446118] [2020-10-14 18:01:44,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:01:44,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:01:44,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:01:44,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:01:45,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:01:45,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:01:45,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:01:49,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:01:49,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-14 18:01:49,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 18:01:49,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 18:01:49,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:01:49,891 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:01:49,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-14 18:01:49,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-14 18:01:49,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 18:01:49,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:01:50,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:01:50,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:01:50,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:01:50,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:01:50,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:01:50,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:01:50,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:01:50,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:01:50,325 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:01:50,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:01:50,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:01:50,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:01:50,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:01:50,340 INFO L134 CoverageAnalysis]: Checked inductivity of 1932 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 1656 trivial. 0 not checked. [2020-10-14 18:01:50,340 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1851446118] [2020-10-14 18:01:50,341 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:01:50,341 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-14 18:01:50,341 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228729840] [2020-10-14 18:01:50,341 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-14 18:01:50,341 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:01:50,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-14 18:01:50,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2020-10-14 18:01:50,342 INFO L87 Difference]: Start difference. First operand 191 states and 198 transitions. Second operand 27 states. [2020-10-14 18:01:50,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:01:50,842 INFO L93 Difference]: Finished difference Result 359 states and 379 transitions. [2020-10-14 18:01:50,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-14 18:01:50,842 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 186 [2020-10-14 18:01:50,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:01:50,844 INFO L225 Difference]: With dead ends: 359 [2020-10-14 18:01:50,844 INFO L226 Difference]: Without dead ends: 198 [2020-10-14 18:01:50,846 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2020-10-14 18:01:50,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2020-10-14 18:01:50,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2020-10-14 18:01:50,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2020-10-14 18:01:50,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 205 transitions. [2020-10-14 18:01:50,854 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 205 transitions. Word has length 186 [2020-10-14 18:01:50,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:01:50,854 INFO L479 AbstractCegarLoop]: Abstraction has 198 states and 205 transitions. [2020-10-14 18:01:50,854 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-14 18:01:50,854 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 205 transitions. [2020-10-14 18:01:50,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-10-14 18:01:50,855 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:01:50,855 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 24, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:01:50,856 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-14 18:01:50,856 INFO L427 AbstractCegarLoop]: === Iteration 25 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:01:50,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:01:50,856 INFO L82 PathProgramCache]: Analyzing trace with hash 1177716554, now seen corresponding path program 24 times [2020-10-14 18:01:50,856 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:01:50,857 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1200747553] [2020-10-14 18:01:50,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:01:50,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:01:50,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:01:50,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:01:51,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:01:51,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:01:52,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:01:55,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:01:55,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-14 18:01:55,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 18:01:55,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 18:01:55,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:01:55,884 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:01:55,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-14 18:01:55,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-14 18:01:55,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 18:01:55,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:01:56,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:01:56,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:01:56,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:01:56,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:01:56,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:01:56,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:01:56,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:01:56,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:01:56,499 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:01:56,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:01:56,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:01:56,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:01:56,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:01:56,542 INFO L134 CoverageAnalysis]: Checked inductivity of 2100 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 1800 trivial. 0 not checked. [2020-10-14 18:01:56,543 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1200747553] [2020-10-14 18:01:56,543 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:01:56,543 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-14 18:01:56,544 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88245457] [2020-10-14 18:01:56,546 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-14 18:01:56,546 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:01:56,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-14 18:01:56,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2020-10-14 18:01:56,548 INFO L87 Difference]: Start difference. First operand 198 states and 205 transitions. Second operand 28 states. [2020-10-14 18:01:57,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:01:57,070 INFO L93 Difference]: Finished difference Result 372 states and 392 transitions. [2020-10-14 18:01:57,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-14 18:01:57,070 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 193 [2020-10-14 18:01:57,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:01:57,072 INFO L225 Difference]: With dead ends: 372 [2020-10-14 18:01:57,072 INFO L226 Difference]: Without dead ends: 205 [2020-10-14 18:01:57,073 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2020-10-14 18:01:57,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2020-10-14 18:01:57,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 205. [2020-10-14 18:01:57,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2020-10-14 18:01:57,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 212 transitions. [2020-10-14 18:01:57,080 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 212 transitions. Word has length 193 [2020-10-14 18:01:57,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:01:57,080 INFO L479 AbstractCegarLoop]: Abstraction has 205 states and 212 transitions. [2020-10-14 18:01:57,080 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-14 18:01:57,080 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 212 transitions. [2020-10-14 18:01:57,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-10-14 18:01:57,082 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:01:57,082 INFO L422 BasicCegarLoop]: trace histogram [25, 25, 25, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:01:57,082 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-14 18:01:57,082 INFO L427 AbstractCegarLoop]: === Iteration 26 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:01:57,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:01:57,083 INFO L82 PathProgramCache]: Analyzing trace with hash 1786438823, now seen corresponding path program 25 times [2020-10-14 18:01:57,083 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:01:57,083 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1670982931] [2020-10-14 18:01:57,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:01:57,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:01:57,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:01:57,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:01:57,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:01:57,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:01:58,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:02:02,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:02:02,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 208 [2020-10-14 18:02:02,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 18:02:02,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5049 [2020-10-14 18:02:02,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:02:02,160 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:02:02,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-14 18:02:02,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-14 18:02:02,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-14 18:02:02,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:02:02,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:02:02,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:02:02,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:02:02,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:02:02,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:02:02,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:02:02,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:02:02,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:02:02,773 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:02:02,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:02:02,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:02:02,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:02:02,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:02:02,818 INFO L134 CoverageAnalysis]: Checked inductivity of 2275 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 1950 trivial. 0 not checked. [2020-10-14 18:02:02,819 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1670982931] [2020-10-14 18:02:02,819 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:02:02,819 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-14 18:02:02,820 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869429942] [2020-10-14 18:02:02,823 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-14 18:02:02,823 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:02:02,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-14 18:02:02,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2020-10-14 18:02:02,825 INFO L87 Difference]: Start difference. First operand 205 states and 212 transitions. Second operand 29 states. [2020-10-14 18:02:03,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:02:03,421 INFO L93 Difference]: Finished difference Result 385 states and 405 transitions. [2020-10-14 18:02:03,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-14 18:02:03,422 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 200 [2020-10-14 18:02:03,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:02:03,424 INFO L225 Difference]: With dead ends: 385 [2020-10-14 18:02:03,424 INFO L226 Difference]: Without dead ends: 212 [2020-10-14 18:02:03,425 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2020-10-14 18:02:03,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2020-10-14 18:02:03,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 212. [2020-10-14 18:02:03,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212 states. [2020-10-14 18:02:03,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 219 transitions. [2020-10-14 18:02:03,441 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 219 transitions. Word has length 200 [2020-10-14 18:02:03,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:02:03,441 INFO L479 AbstractCegarLoop]: Abstraction has 212 states and 219 transitions. [2020-10-14 18:02:03,441 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-14 18:02:03,441 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 219 transitions. [2020-10-14 18:02:03,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2020-10-14 18:02:03,443 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:02:03,443 INFO L422 BasicCegarLoop]: trace histogram [26, 26, 26, 26, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:02:03,444 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-14 18:02:03,444 INFO L427 AbstractCegarLoop]: === Iteration 27 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:02:03,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:02:03,445 INFO L82 PathProgramCache]: Analyzing trace with hash 1264452778, now seen corresponding path program 26 times [2020-10-14 18:02:03,445 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:02:03,446 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [491490707] [2020-10-14 18:02:03,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:02:03,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:02:03,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:02:03,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:02:03,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:02:03,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:02:05,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:02:08,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:02:08,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 215 [2020-10-14 18:02:08,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 18:02:08,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-14 18:02:08,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:02:08,514 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:02:08,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-14 18:02:08,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-14 18:02:08,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 18:02:08,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:02:09,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:02:09,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:02:09,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:02:09,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:02:09,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:02:09,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:02:09,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:02:09,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:02:09,073 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:02:09,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:02:09,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:02:09,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:02:09,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:02:09,098 INFO L134 CoverageAnalysis]: Checked inductivity of 2457 backedges. 0 proven. 351 refuted. 0 times theorem prover too weak. 2106 trivial. 0 not checked. [2020-10-14 18:02:09,098 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [491490707] [2020-10-14 18:02:09,099 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:02:09,099 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-14 18:02:09,099 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523027377] [2020-10-14 18:02:09,099 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-14 18:02:09,100 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:02:09,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-14 18:02:09,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2020-10-14 18:02:09,101 INFO L87 Difference]: Start difference. First operand 212 states and 219 transitions. Second operand 30 states. [2020-10-14 18:02:09,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:02:09,727 INFO L93 Difference]: Finished difference Result 398 states and 418 transitions. [2020-10-14 18:02:09,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-14 18:02:09,727 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 207 [2020-10-14 18:02:09,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:02:09,729 INFO L225 Difference]: With dead ends: 398 [2020-10-14 18:02:09,729 INFO L226 Difference]: Without dead ends: 219 [2020-10-14 18:02:09,730 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2020-10-14 18:02:09,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2020-10-14 18:02:09,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 219. [2020-10-14 18:02:09,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2020-10-14 18:02:09,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 226 transitions. [2020-10-14 18:02:09,741 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 226 transitions. Word has length 207 [2020-10-14 18:02:09,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:02:09,742 INFO L479 AbstractCegarLoop]: Abstraction has 219 states and 226 transitions. [2020-10-14 18:02:09,742 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-14 18:02:09,742 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 226 transitions. [2020-10-14 18:02:09,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2020-10-14 18:02:09,744 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:02:09,745 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 27, 27, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:02:09,745 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-14 18:02:09,745 INFO L427 AbstractCegarLoop]: === Iteration 28 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:02:09,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:02:09,746 INFO L82 PathProgramCache]: Analyzing trace with hash 209205319, now seen corresponding path program 27 times [2020-10-14 18:02:09,746 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:02:09,746 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1385544437] [2020-10-14 18:02:09,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:02:09,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:02:09,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:02:10,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:02:10,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:02:10,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:02:12,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:02:14,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:02:14,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 222 [2020-10-14 18:02:14,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 18:02:14,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 18:02:14,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:02:14,785 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:02:14,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-14 18:02:14,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-14 18:02:14,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 18:02:14,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:02:15,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:02:15,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:02:15,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:02:15,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:02:15,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:02:15,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:02:15,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:02:15,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:02:15,327 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:02:15,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:02:15,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:02:15,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:02:15,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:02:15,344 INFO L134 CoverageAnalysis]: Checked inductivity of 2646 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 2268 trivial. 0 not checked. [2020-10-14 18:02:15,345 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1385544437] [2020-10-14 18:02:15,345 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:02:15,345 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-14 18:02:15,345 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913998576] [2020-10-14 18:02:15,346 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-14 18:02:15,346 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:02:15,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-14 18:02:15,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2020-10-14 18:02:15,346 INFO L87 Difference]: Start difference. First operand 219 states and 226 transitions. Second operand 31 states. [2020-10-14 18:02:15,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:02:15,985 INFO L93 Difference]: Finished difference Result 411 states and 431 transitions. [2020-10-14 18:02:15,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-14 18:02:15,986 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 214 [2020-10-14 18:02:15,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:02:15,988 INFO L225 Difference]: With dead ends: 411 [2020-10-14 18:02:15,988 INFO L226 Difference]: Without dead ends: 226 [2020-10-14 18:02:15,990 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2020-10-14 18:02:15,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-10-14 18:02:15,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2020-10-14 18:02:15,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-10-14 18:02:15,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 233 transitions. [2020-10-14 18:02:15,998 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 233 transitions. Word has length 214 [2020-10-14 18:02:15,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:02:15,998 INFO L479 AbstractCegarLoop]: Abstraction has 226 states and 233 transitions. [2020-10-14 18:02:15,998 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-14 18:02:15,999 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 233 transitions. [2020-10-14 18:02:16,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2020-10-14 18:02:16,001 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:02:16,001 INFO L422 BasicCegarLoop]: trace histogram [28, 28, 28, 28, 28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:02:16,001 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-14 18:02:16,001 INFO L427 AbstractCegarLoop]: === Iteration 29 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:02:16,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:02:16,003 INFO L82 PathProgramCache]: Analyzing trace with hash 1602017802, now seen corresponding path program 28 times [2020-10-14 18:02:16,004 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:02:16,004 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1395519576] [2020-10-14 18:02:16,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:02:16,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:02:16,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:02:16,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:02:16,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:02:16,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:02:18,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:02:21,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:02:21,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 229 [2020-10-14 18:02:21,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 18:02:21,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 18:02:21,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:02:21,044 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:02:21,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-14 18:02:21,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 131 [2020-10-14 18:02:21,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 18:02:21,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:02:21,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:02:21,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:02:21,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:02:21,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:02:21,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:02:21,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:02:21,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:02:21,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:02:21,635 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:02:21,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:02:21,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:02:21,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:02:21,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:02:21,654 INFO L134 CoverageAnalysis]: Checked inductivity of 2842 backedges. 0 proven. 406 refuted. 0 times theorem prover too weak. 2436 trivial. 0 not checked. [2020-10-14 18:02:21,655 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1395519576] [2020-10-14 18:02:21,655 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:02:21,655 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-14 18:02:21,656 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372526268] [2020-10-14 18:02:21,656 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-14 18:02:21,656 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:02:21,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-14 18:02:21,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992 [2020-10-14 18:02:21,657 INFO L87 Difference]: Start difference. First operand 226 states and 233 transitions. Second operand 32 states. [2020-10-14 18:02:22,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:02:22,220 INFO L93 Difference]: Finished difference Result 424 states and 444 transitions. [2020-10-14 18:02:22,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-14 18:02:22,221 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 221 [2020-10-14 18:02:22,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:02:22,222 INFO L225 Difference]: With dead ends: 424 [2020-10-14 18:02:22,223 INFO L226 Difference]: Without dead ends: 233 [2020-10-14 18:02:22,224 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992 [2020-10-14 18:02:22,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2020-10-14 18:02:22,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 233. [2020-10-14 18:02:22,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2020-10-14 18:02:22,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 240 transitions. [2020-10-14 18:02:22,231 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 240 transitions. Word has length 221 [2020-10-14 18:02:22,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:02:22,231 INFO L479 AbstractCegarLoop]: Abstraction has 233 states and 240 transitions. [2020-10-14 18:02:22,231 INFO L480 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-14 18:02:22,231 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 240 transitions. [2020-10-14 18:02:22,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2020-10-14 18:02:22,233 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:02:22,233 INFO L422 BasicCegarLoop]: trace histogram [29, 29, 29, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:02:22,233 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-14 18:02:22,233 INFO L427 AbstractCegarLoop]: === Iteration 30 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:02:22,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:02:22,234 INFO L82 PathProgramCache]: Analyzing trace with hash 1583789031, now seen corresponding path program 29 times [2020-10-14 18:02:22,234 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:02:22,234 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [149276991] [2020-10-14 18:02:22,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:02:22,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:02:22,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:02:22,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:02:22,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:02:22,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:02:23,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:02:27,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:02:27,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 236 [2020-10-14 18:02:27,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 18:02:27,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-14 18:02:27,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:02:27,264 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:02:27,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-14 18:02:27,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 104 [2020-10-14 18:02:27,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-14 18:02:27,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:02:27,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:02:27,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:02:27,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:02:27,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:02:27,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:02:27,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:02:27,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:02:27,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:02:27,852 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:02:27,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:02:27,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:02:27,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:02:27,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:02:27,875 INFO L134 CoverageAnalysis]: Checked inductivity of 3045 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 2610 trivial. 0 not checked. [2020-10-14 18:02:27,875 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [149276991] [2020-10-14 18:02:27,875 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:02:27,875 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-10-14 18:02:27,876 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524961717] [2020-10-14 18:02:27,876 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-10-14 18:02:27,876 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:02:27,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-10-14 18:02:27,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2020-10-14 18:02:27,877 INFO L87 Difference]: Start difference. First operand 233 states and 240 transitions. Second operand 33 states. [2020-10-14 18:02:28,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:02:28,532 INFO L93 Difference]: Finished difference Result 437 states and 457 transitions. [2020-10-14 18:02:28,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-14 18:02:28,533 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 228 [2020-10-14 18:02:28,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:02:28,534 INFO L225 Difference]: With dead ends: 437 [2020-10-14 18:02:28,535 INFO L226 Difference]: Without dead ends: 240 [2020-10-14 18:02:28,536 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2020-10-14 18:02:28,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2020-10-14 18:02:28,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 240. [2020-10-14 18:02:28,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 240 states. [2020-10-14 18:02:28,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 247 transitions. [2020-10-14 18:02:28,543 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 247 transitions. Word has length 228 [2020-10-14 18:02:28,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:02:28,544 INFO L479 AbstractCegarLoop]: Abstraction has 240 states and 247 transitions. [2020-10-14 18:02:28,544 INFO L480 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-10-14 18:02:28,544 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 247 transitions. [2020-10-14 18:02:28,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2020-10-14 18:02:28,545 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:02:28,546 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 30, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:02:28,546 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-14 18:02:28,546 INFO L427 AbstractCegarLoop]: === Iteration 31 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:02:28,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:02:28,546 INFO L82 PathProgramCache]: Analyzing trace with hash 1683818346, now seen corresponding path program 30 times [2020-10-14 18:02:28,546 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:02:28,547 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1832916987] [2020-10-14 18:02:28,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:02:28,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:02:28,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:02:28,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:02:28,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:02:29,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:02:30,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:02:33,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:02:33,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 243 [2020-10-14 18:02:33,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 18:02:33,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 18:02:33,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:02:33,579 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:02:33,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-14 18:02:33,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:02:33,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-14 18:02:33,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:02:34,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:02:34,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:02:34,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:02:34,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:02:34,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:02:34,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:02:34,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:02:34,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:02:34,188 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:02:34,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:02:34,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:02:34,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:02:34,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:02:34,209 INFO L134 CoverageAnalysis]: Checked inductivity of 3255 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 2790 trivial. 0 not checked. [2020-10-14 18:02:34,209 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1832916987] [2020-10-14 18:02:34,209 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:02:34,209 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-10-14 18:02:34,209 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530789894] [2020-10-14 18:02:34,210 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-14 18:02:34,210 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:02:34,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-14 18:02:34,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2020-10-14 18:02:34,211 INFO L87 Difference]: Start difference. First operand 240 states and 247 transitions. Second operand 34 states. [2020-10-14 18:02:34,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:02:34,908 INFO L93 Difference]: Finished difference Result 450 states and 470 transitions. [2020-10-14 18:02:34,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-14 18:02:34,908 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 235 [2020-10-14 18:02:34,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:02:34,911 INFO L225 Difference]: With dead ends: 450 [2020-10-14 18:02:34,911 INFO L226 Difference]: Without dead ends: 247 [2020-10-14 18:02:34,912 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2020-10-14 18:02:34,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2020-10-14 18:02:34,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 247. [2020-10-14 18:02:34,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 247 states. [2020-10-14 18:02:34,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 254 transitions. [2020-10-14 18:02:34,920 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 254 transitions. Word has length 235 [2020-10-14 18:02:34,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:02:34,920 INFO L479 AbstractCegarLoop]: Abstraction has 247 states and 254 transitions. [2020-10-14 18:02:34,921 INFO L480 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-10-14 18:02:34,921 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 254 transitions. [2020-10-14 18:02:34,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2020-10-14 18:02:34,922 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:02:34,922 INFO L422 BasicCegarLoop]: trace histogram [31, 31, 31, 31, 31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:02:34,923 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-14 18:02:34,923 INFO L427 AbstractCegarLoop]: === Iteration 32 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:02:34,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:02:34,923 INFO L82 PathProgramCache]: Analyzing trace with hash 557340551, now seen corresponding path program 31 times [2020-10-14 18:02:34,923 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:02:34,923 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [39906914] [2020-10-14 18:02:34,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:02:34,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:02:34,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:02:35,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:02:35,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:02:35,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:02:36,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:02:39,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:02:39,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-14 18:02:39,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 18:02:39,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-14 18:02:39,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:02:39,972 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:02:39,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-14 18:02:39,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-14 18:02:39,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 18:02:39,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:02:40,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:02:40,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:02:40,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:02:40,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:02:40,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:02:40,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:02:40,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:02:40,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:02:40,628 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:02:40,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:02:40,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:02:40,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:02:40,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:02:40,652 INFO L134 CoverageAnalysis]: Checked inductivity of 3472 backedges. 0 proven. 496 refuted. 0 times theorem prover too weak. 2976 trivial. 0 not checked. [2020-10-14 18:02:40,652 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [39906914] [2020-10-14 18:02:40,653 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:02:40,653 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2020-10-14 18:02:40,653 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347805181] [2020-10-14 18:02:40,653 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-10-14 18:02:40,653 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:02:40,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-10-14 18:02:40,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190 [2020-10-14 18:02:40,654 INFO L87 Difference]: Start difference. First operand 247 states and 254 transitions. Second operand 35 states. [2020-10-14 18:02:41,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:02:41,283 INFO L93 Difference]: Finished difference Result 463 states and 483 transitions. [2020-10-14 18:02:41,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-14 18:02:41,283 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 242 [2020-10-14 18:02:41,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:02:41,286 INFO L225 Difference]: With dead ends: 463 [2020-10-14 18:02:41,286 INFO L226 Difference]: Without dead ends: 254 [2020-10-14 18:02:41,288 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190 [2020-10-14 18:02:41,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2020-10-14 18:02:41,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 254. [2020-10-14 18:02:41,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2020-10-14 18:02:41,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 261 transitions. [2020-10-14 18:02:41,295 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 261 transitions. Word has length 242 [2020-10-14 18:02:41,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:02:41,296 INFO L479 AbstractCegarLoop]: Abstraction has 254 states and 261 transitions. [2020-10-14 18:02:41,296 INFO L480 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-10-14 18:02:41,296 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 261 transitions. [2020-10-14 18:02:41,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2020-10-14 18:02:41,298 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:02:41,298 INFO L422 BasicCegarLoop]: trace histogram [32, 32, 32, 32, 32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:02:41,298 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-14 18:02:41,298 INFO L427 AbstractCegarLoop]: === Iteration 33 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:02:41,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:02:41,299 INFO L82 PathProgramCache]: Analyzing trace with hash -2058580790, now seen corresponding path program 32 times [2020-10-14 18:02:41,299 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:02:41,299 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1074128547] [2020-10-14 18:02:41,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:02:41,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:02:41,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:02:41,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:02:41,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:02:42,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:02:44,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:02:46,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:02:46,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 257 [2020-10-14 18:02:46,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 18:02:46,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 18:02:46,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:02:46,333 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:02:46,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-14 18:02:46,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-14 18:02:46,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-14 18:02:46,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:02:47,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:02:47,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:02:47,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:02:47,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:02:47,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:02:47,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:02:47,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:02:47,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:02:47,019 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:02:47,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:02:47,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:02:47,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:02:47,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:02:47,042 INFO L134 CoverageAnalysis]: Checked inductivity of 3696 backedges. 0 proven. 528 refuted. 0 times theorem prover too weak. 3168 trivial. 0 not checked. [2020-10-14 18:02:47,043 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1074128547] [2020-10-14 18:02:47,043 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:02:47,043 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2020-10-14 18:02:47,043 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598303470] [2020-10-14 18:02:47,043 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-10-14 18:02:47,043 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:02:47,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-10-14 18:02:47,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=597, Invalid=663, Unknown=0, NotChecked=0, Total=1260 [2020-10-14 18:02:47,044 INFO L87 Difference]: Start difference. First operand 254 states and 261 transitions. Second operand 36 states. [2020-10-14 18:02:47,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:02:47,771 INFO L93 Difference]: Finished difference Result 476 states and 496 transitions. [2020-10-14 18:02:47,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-14 18:02:47,772 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 249 [2020-10-14 18:02:47,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:02:47,774 INFO L225 Difference]: With dead ends: 476 [2020-10-14 18:02:47,774 INFO L226 Difference]: Without dead ends: 261 [2020-10-14 18:02:47,776 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=597, Invalid=663, Unknown=0, NotChecked=0, Total=1260 [2020-10-14 18:02:47,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2020-10-14 18:02:47,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 261. [2020-10-14 18:02:47,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-14 18:02:47,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 268 transitions. [2020-10-14 18:02:47,783 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 268 transitions. Word has length 249 [2020-10-14 18:02:47,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:02:47,784 INFO L479 AbstractCegarLoop]: Abstraction has 261 states and 268 transitions. [2020-10-14 18:02:47,784 INFO L480 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-10-14 18:02:47,784 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 268 transitions. [2020-10-14 18:02:47,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2020-10-14 18:02:47,786 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:02:47,786 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 33, 33, 33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:02:47,786 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-14 18:02:47,786 INFO L427 AbstractCegarLoop]: === Iteration 34 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:02:47,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:02:47,787 INFO L82 PathProgramCache]: Analyzing trace with hash 2086609703, now seen corresponding path program 33 times [2020-10-14 18:02:47,787 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:02:47,787 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [48399718] [2020-10-14 18:02:47,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:02:47,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:02:47,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:02:47,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:02:48,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:02:48,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:02:50,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:02:52,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:02:52,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 264 [2020-10-14 18:02:52,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 18:02:52,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-14 18:02:52,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:02:52,839 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:02:52,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-14 18:02:52,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-14 18:02:52,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 18:02:52,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:02:53,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:02:53,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:02:53,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:02:53,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:02:53,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:02:53,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:02:53,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:02:53,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:02:53,574 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:02:53,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:02:53,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:02:53,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:02:53,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:02:53,621 INFO L134 CoverageAnalysis]: Checked inductivity of 3927 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 3366 trivial. 0 not checked. [2020-10-14 18:02:53,621 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [48399718] [2020-10-14 18:02:53,622 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:02:53,622 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2020-10-14 18:02:53,622 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934658720] [2020-10-14 18:02:53,622 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-10-14 18:02:53,623 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:02:53,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-10-14 18:02:53,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=632, Invalid=700, Unknown=0, NotChecked=0, Total=1332 [2020-10-14 18:02:53,624 INFO L87 Difference]: Start difference. First operand 261 states and 268 transitions. Second operand 37 states. [2020-10-14 18:02:54,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:02:54,372 INFO L93 Difference]: Finished difference Result 489 states and 509 transitions. [2020-10-14 18:02:54,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-14 18:02:54,372 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 256 [2020-10-14 18:02:54,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:02:54,374 INFO L225 Difference]: With dead ends: 489 [2020-10-14 18:02:54,374 INFO L226 Difference]: Without dead ends: 268 [2020-10-14 18:02:54,375 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=632, Invalid=700, Unknown=0, NotChecked=0, Total=1332 [2020-10-14 18:02:54,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2020-10-14 18:02:54,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 268. [2020-10-14 18:02:54,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 268 states. [2020-10-14 18:02:54,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 275 transitions. [2020-10-14 18:02:54,383 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 275 transitions. Word has length 256 [2020-10-14 18:02:54,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:02:54,383 INFO L479 AbstractCegarLoop]: Abstraction has 268 states and 275 transitions. [2020-10-14 18:02:54,383 INFO L480 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-10-14 18:02:54,383 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 275 transitions. [2020-10-14 18:02:54,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2020-10-14 18:02:54,385 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:02:54,385 INFO L422 BasicCegarLoop]: trace histogram [34, 34, 34, 34, 34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:02:54,385 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-14 18:02:54,385 INFO L427 AbstractCegarLoop]: === Iteration 35 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:02:54,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:02:54,386 INFO L82 PathProgramCache]: Analyzing trace with hash 387541546, now seen corresponding path program 34 times [2020-10-14 18:02:54,386 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:02:54,386 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1588066036] [2020-10-14 18:02:54,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:02:54,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:02:54,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:02:54,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:02:54,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:02:54,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:02:57,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:02:59,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:02:59,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 271 [2020-10-14 18:02:59,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 18:02:59,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 18:02:59,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:02:59,420 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:02:59,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-10-14 18:02:59,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-14 18:02:59,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-14 18:02:59,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:03:00,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:03:00,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:03:00,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:03:00,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:03:00,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:03:00,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:03:00,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:03:00,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:03:00,192 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:03:00,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:03:00,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:03:00,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:03:00,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:03:00,219 INFO L134 CoverageAnalysis]: Checked inductivity of 4165 backedges. 0 proven. 595 refuted. 0 times theorem prover too weak. 3570 trivial. 0 not checked. [2020-10-14 18:03:00,219 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1588066036] [2020-10-14 18:03:00,219 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:03:00,220 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2020-10-14 18:03:00,220 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893721583] [2020-10-14 18:03:00,220 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-10-14 18:03:00,220 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:03:00,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-10-14 18:03:00,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=668, Invalid=738, Unknown=0, NotChecked=0, Total=1406 [2020-10-14 18:03:00,221 INFO L87 Difference]: Start difference. First operand 268 states and 275 transitions. Second operand 38 states. [2020-10-14 18:03:00,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:03:00,879 INFO L93 Difference]: Finished difference Result 502 states and 522 transitions. [2020-10-14 18:03:00,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-14 18:03:00,880 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 263 [2020-10-14 18:03:00,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:03:00,882 INFO L225 Difference]: With dead ends: 502 [2020-10-14 18:03:00,882 INFO L226 Difference]: Without dead ends: 275 [2020-10-14 18:03:00,884 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=668, Invalid=738, Unknown=0, NotChecked=0, Total=1406 [2020-10-14 18:03:00,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2020-10-14 18:03:00,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 275. [2020-10-14 18:03:00,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 275 states. [2020-10-14 18:03:00,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 282 transitions. [2020-10-14 18:03:00,891 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 282 transitions. Word has length 263 [2020-10-14 18:03:00,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:03:00,891 INFO L479 AbstractCegarLoop]: Abstraction has 275 states and 282 transitions. [2020-10-14 18:03:00,891 INFO L480 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-10-14 18:03:00,892 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 282 transitions. [2020-10-14 18:03:00,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2020-10-14 18:03:00,893 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:03:00,893 INFO L422 BasicCegarLoop]: trace histogram [35, 35, 35, 35, 35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:03:00,894 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-14 18:03:00,894 INFO L427 AbstractCegarLoop]: === Iteration 36 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:03:00,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:03:00,894 INFO L82 PathProgramCache]: Analyzing trace with hash 499979975, now seen corresponding path program 35 times [2020-10-14 18:03:00,894 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:03:00,894 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1816858170] [2020-10-14 18:03:00,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:03:00,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:03:00,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:03:01,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:03:01,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:03:01,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:03:03,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:03:05,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:03:05,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 278 [2020-10-14 18:03:05,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 18:03:05,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5041 [2020-10-14 18:03:05,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:03:05,962 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:03:05,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 37 [2020-10-14 18:03:05,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-14 18:03:05,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-14 18:03:05,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:03:06,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:03:06,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:03:06,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:03:06,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:03:06,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:03:06,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:03:06,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:03:06,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:03:06,768 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:03:06,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:03:06,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:03:06,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:03:06,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:03:06,795 INFO L134 CoverageAnalysis]: Checked inductivity of 4410 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 3780 trivial. 0 not checked. [2020-10-14 18:03:06,795 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1816858170] [2020-10-14 18:03:06,796 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:03:06,796 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2020-10-14 18:03:06,796 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900088579] [2020-10-14 18:03:06,796 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-10-14 18:03:06,796 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:03:06,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-10-14 18:03:06,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=705, Invalid=777, Unknown=0, NotChecked=0, Total=1482 [2020-10-14 18:03:06,798 INFO L87 Difference]: Start difference. First operand 275 states and 282 transitions. Second operand 39 states. [2020-10-14 18:03:07,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:03:07,492 INFO L93 Difference]: Finished difference Result 515 states and 535 transitions. [2020-10-14 18:03:07,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-14 18:03:07,493 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 270 [2020-10-14 18:03:07,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:03:07,495 INFO L225 Difference]: With dead ends: 515 [2020-10-14 18:03:07,495 INFO L226 Difference]: Without dead ends: 282 [2020-10-14 18:03:07,497 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=705, Invalid=777, Unknown=0, NotChecked=0, Total=1482 [2020-10-14 18:03:07,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2020-10-14 18:03:07,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 282. [2020-10-14 18:03:07,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 282 states. [2020-10-14 18:03:07,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 289 transitions. [2020-10-14 18:03:07,505 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 289 transitions. Word has length 270 [2020-10-14 18:03:07,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:03:07,506 INFO L479 AbstractCegarLoop]: Abstraction has 282 states and 289 transitions. [2020-10-14 18:03:07,506 INFO L480 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-10-14 18:03:07,506 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 289 transitions. [2020-10-14 18:03:07,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2020-10-14 18:03:07,507 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:03:07,508 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 36, 36, 36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:03:07,508 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-14 18:03:07,508 INFO L427 AbstractCegarLoop]: === Iteration 37 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:03:07,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:03:07,508 INFO L82 PathProgramCache]: Analyzing trace with hash 2014420874, now seen corresponding path program 36 times [2020-10-14 18:03:07,509 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:03:07,509 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1197009687] [2020-10-14 18:03:07,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:03:07,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:03:07,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:03:07,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:03:07,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:03:08,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:03:10,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:03:12,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:03:12,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 285 [2020-10-14 18:03:12,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 18:03:12,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-10-14 18:03:12,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:03:12,576 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:03:12,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 38 [2020-10-14 18:03:12,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 125 [2020-10-14 18:03:12,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-14 18:03:12,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:03:13,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:03:13,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:03:13,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:03:13,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:03:13,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:03:13,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:03:13,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:03:13,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:03:13,435 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:03:13,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:03:13,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:03:13,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:03:13,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:03:13,464 INFO L134 CoverageAnalysis]: Checked inductivity of 4662 backedges. 0 proven. 666 refuted. 0 times theorem prover too weak. 3996 trivial. 0 not checked. [2020-10-14 18:03:13,465 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1197009687] [2020-10-14 18:03:13,465 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:03:13,465 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2020-10-14 18:03:13,465 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339502925] [2020-10-14 18:03:13,466 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2020-10-14 18:03:13,466 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:03:13,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2020-10-14 18:03:13,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=743, Invalid=817, Unknown=0, NotChecked=0, Total=1560 [2020-10-14 18:03:13,467 INFO L87 Difference]: Start difference. First operand 282 states and 289 transitions. Second operand 40 states. [2020-10-14 18:03:14,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:03:14,160 INFO L93 Difference]: Finished difference Result 528 states and 548 transitions. [2020-10-14 18:03:14,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-14 18:03:14,160 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 277 [2020-10-14 18:03:14,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:03:14,162 INFO L225 Difference]: With dead ends: 528 [2020-10-14 18:03:14,163 INFO L226 Difference]: Without dead ends: 289 [2020-10-14 18:03:14,164 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=743, Invalid=817, Unknown=0, NotChecked=0, Total=1560 [2020-10-14 18:03:14,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2020-10-14 18:03:14,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 289. [2020-10-14 18:03:14,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 289 states. [2020-10-14 18:03:14,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 296 transitions. [2020-10-14 18:03:14,172 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 296 transitions. Word has length 277 [2020-10-14 18:03:14,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:03:14,172 INFO L479 AbstractCegarLoop]: Abstraction has 289 states and 296 transitions. [2020-10-14 18:03:14,172 INFO L480 AbstractCegarLoop]: Interpolant automaton has 40 states. [2020-10-14 18:03:14,172 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 296 transitions. [2020-10-14 18:03:14,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2020-10-14 18:03:14,174 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:03:14,174 INFO L422 BasicCegarLoop]: trace histogram [37, 37, 37, 37, 37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:03:14,175 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-14 18:03:14,175 INFO L427 AbstractCegarLoop]: === Iteration 38 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:03:14,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:03:14,175 INFO L82 PathProgramCache]: Analyzing trace with hash 1509175911, now seen corresponding path program 37 times [2020-10-14 18:03:14,176 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:03:14,176 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [844936025] [2020-10-14 18:03:14,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:03:14,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:03:14,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:03:14,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:03:14,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:03:14,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:03:17,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:03:19,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:03:19,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 292 [2020-10-14 18:03:19,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 18:03:19,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-14 18:03:19,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:03:19,222 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:03:19,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 39 [2020-10-14 18:03:19,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 167 [2020-10-14 18:03:19,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-14 18:03:19,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:03:20,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:03:20,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:03:20,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:03:20,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:03:20,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:03:20,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:03:20,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:03:20,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:03:20,137 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:03:20,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:03:20,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:03:20,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:03:20,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:03:20,166 INFO L134 CoverageAnalysis]: Checked inductivity of 4921 backedges. 0 proven. 703 refuted. 0 times theorem prover too weak. 4218 trivial. 0 not checked. [2020-10-14 18:03:20,166 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [844936025] [2020-10-14 18:03:20,166 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:03:20,166 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2020-10-14 18:03:20,167 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993337593] [2020-10-14 18:03:20,167 INFO L459 AbstractCegarLoop]: Interpolant automaton has 41 states [2020-10-14 18:03:20,167 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:03:20,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2020-10-14 18:03:20,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=782, Invalid=858, Unknown=0, NotChecked=0, Total=1640 [2020-10-14 18:03:20,168 INFO L87 Difference]: Start difference. First operand 289 states and 296 transitions. Second operand 41 states. [2020-10-14 18:03:20,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:03:20,975 INFO L93 Difference]: Finished difference Result 541 states and 561 transitions. [2020-10-14 18:03:20,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-10-14 18:03:20,976 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 284 [2020-10-14 18:03:20,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:03:20,978 INFO L225 Difference]: With dead ends: 541 [2020-10-14 18:03:20,978 INFO L226 Difference]: Without dead ends: 296 [2020-10-14 18:03:20,979 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=782, Invalid=858, Unknown=0, NotChecked=0, Total=1640 [2020-10-14 18:03:20,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2020-10-14 18:03:20,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 296. [2020-10-14 18:03:20,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 296 states. [2020-10-14 18:03:20,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 303 transitions. [2020-10-14 18:03:20,987 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 303 transitions. Word has length 284 [2020-10-14 18:03:20,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:03:20,987 INFO L479 AbstractCegarLoop]: Abstraction has 296 states and 303 transitions. [2020-10-14 18:03:20,988 INFO L480 AbstractCegarLoop]: Interpolant automaton has 41 states. [2020-10-14 18:03:20,988 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 303 transitions. [2020-10-14 18:03:20,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2020-10-14 18:03:20,989 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:03:20,990 INFO L422 BasicCegarLoop]: trace histogram [38, 38, 38, 38, 38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:03:20,990 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-14 18:03:20,990 INFO L427 AbstractCegarLoop]: === Iteration 39 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:03:20,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:03:20,990 INFO L82 PathProgramCache]: Analyzing trace with hash -268227350, now seen corresponding path program 38 times [2020-10-14 18:03:20,991 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:03:20,991 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [166307743] [2020-10-14 18:03:20,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:03:21,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:03:21,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:03:21,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:03:21,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:03:22,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:03:24,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:03:26,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:03:26,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 299 [2020-10-14 18:03:26,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 18:03:26,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-14 18:03:26,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:03:26,027 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:03:26,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 40 [2020-10-14 18:03:26,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:03:26,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-14 18:03:26,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:03:26,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:03:26,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:03:26,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:03:26,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:03:26,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:03:26,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:03:26,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:03:26,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:03:26,972 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:03:26,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:03:26,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:03:26,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:03:26,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:03:27,003 INFO L134 CoverageAnalysis]: Checked inductivity of 5187 backedges. 0 proven. 741 refuted. 0 times theorem prover too weak. 4446 trivial. 0 not checked. [2020-10-14 18:03:27,003 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [166307743] [2020-10-14 18:03:27,004 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:03:27,004 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2020-10-14 18:03:27,004 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948920582] [2020-10-14 18:03:27,004 INFO L459 AbstractCegarLoop]: Interpolant automaton has 42 states [2020-10-14 18:03:27,004 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:03:27,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2020-10-14 18:03:27,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=822, Invalid=900, Unknown=0, NotChecked=0, Total=1722 [2020-10-14 18:03:27,006 INFO L87 Difference]: Start difference. First operand 296 states and 303 transitions. Second operand 42 states. [2020-10-14 18:03:27,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:03:27,821 INFO L93 Difference]: Finished difference Result 554 states and 574 transitions. [2020-10-14 18:03:27,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-10-14 18:03:27,822 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 291 [2020-10-14 18:03:27,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:03:27,824 INFO L225 Difference]: With dead ends: 554 [2020-10-14 18:03:27,824 INFO L226 Difference]: Without dead ends: 303 [2020-10-14 18:03:27,825 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=822, Invalid=900, Unknown=0, NotChecked=0, Total=1722 [2020-10-14 18:03:27,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2020-10-14 18:03:27,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 303. [2020-10-14 18:03:27,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 303 states. [2020-10-14 18:03:27,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 310 transitions. [2020-10-14 18:03:27,833 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 310 transitions. Word has length 291 [2020-10-14 18:03:27,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:03:27,833 INFO L479 AbstractCegarLoop]: Abstraction has 303 states and 310 transitions. [2020-10-14 18:03:27,833 INFO L480 AbstractCegarLoop]: Interpolant automaton has 42 states. [2020-10-14 18:03:27,834 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 310 transitions. [2020-10-14 18:03:27,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2020-10-14 18:03:27,835 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:03:27,836 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 39, 39, 39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:03:27,836 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-14 18:03:27,836 INFO L427 AbstractCegarLoop]: === Iteration 40 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:03:27,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:03:27,836 INFO L82 PathProgramCache]: Analyzing trace with hash 1271297543, now seen corresponding path program 39 times [2020-10-14 18:03:27,836 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:03:27,837 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1956706315] [2020-10-14 18:03:27,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:03:27,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:03:27,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:03:28,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:03:28,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:03:28,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:03:31,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:03:32,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:03:32,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 306 [2020-10-14 18:03:32,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 18:03:32,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5051 [2020-10-14 18:03:32,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:03:32,911 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:03:32,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 41 [2020-10-14 18:03:32,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-14 18:03:32,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-14 18:03:32,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:03:33,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:03:33,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:03:33,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:03:33,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:03:33,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:03:33,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:03:33,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:03:33,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:03:33,905 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:03:33,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:03:33,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:03:33,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:03:33,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:03:33,956 INFO L134 CoverageAnalysis]: Checked inductivity of 5460 backedges. 0 proven. 780 refuted. 0 times theorem prover too weak. 4680 trivial. 0 not checked. [2020-10-14 18:03:33,957 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1956706315] [2020-10-14 18:03:33,957 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:03:33,957 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43] total 43 [2020-10-14 18:03:33,957 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980664644] [2020-10-14 18:03:33,957 INFO L459 AbstractCegarLoop]: Interpolant automaton has 43 states [2020-10-14 18:03:33,957 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:03:33,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2020-10-14 18:03:33,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=863, Invalid=943, Unknown=0, NotChecked=0, Total=1806 [2020-10-14 18:03:33,961 INFO L87 Difference]: Start difference. First operand 303 states and 310 transitions. Second operand 43 states. [2020-10-14 18:03:34,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:03:34,803 INFO L93 Difference]: Finished difference Result 567 states and 587 transitions. [2020-10-14 18:03:34,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-10-14 18:03:34,804 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 298 [2020-10-14 18:03:34,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:03:34,806 INFO L225 Difference]: With dead ends: 567 [2020-10-14 18:03:34,806 INFO L226 Difference]: Without dead ends: 310 [2020-10-14 18:03:34,808 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=863, Invalid=943, Unknown=0, NotChecked=0, Total=1806 [2020-10-14 18:03:34,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2020-10-14 18:03:34,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 310. [2020-10-14 18:03:34,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 310 states. [2020-10-14 18:03:34,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 317 transitions. [2020-10-14 18:03:34,815 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 317 transitions. Word has length 298 [2020-10-14 18:03:34,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:03:34,816 INFO L479 AbstractCegarLoop]: Abstraction has 310 states and 317 transitions. [2020-10-14 18:03:34,816 INFO L480 AbstractCegarLoop]: Interpolant automaton has 43 states. [2020-10-14 18:03:34,816 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 317 transitions. [2020-10-14 18:03:34,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2020-10-14 18:03:34,818 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:03:34,818 INFO L422 BasicCegarLoop]: trace histogram [40, 40, 40, 40, 40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:03:34,818 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-14 18:03:34,818 INFO L427 AbstractCegarLoop]: === Iteration 41 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:03:34,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:03:34,819 INFO L82 PathProgramCache]: Analyzing trace with hash -1875111350, now seen corresponding path program 40 times [2020-10-14 18:03:34,819 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:03:34,819 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1203142685] [2020-10-14 18:03:34,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:03:34,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:03:34,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:03:35,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:03:35,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:03:35,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:03:38,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:03:39,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:03:39,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 313 [2020-10-14 18:03:39,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 18:03:39,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-14 18:03:39,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:03:39,868 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:03:39,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 42 [2020-10-14 18:03:39,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-10-14 18:03:39,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-14 18:03:39,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:03:40,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:03:40,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:03:40,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:03:40,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:03:40,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:03:40,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:03:40,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:03:40,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:03:40,925 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:03:40,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:03:40,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:03:40,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:03:40,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:03:40,959 INFO L134 CoverageAnalysis]: Checked inductivity of 5740 backedges. 0 proven. 820 refuted. 0 times theorem prover too weak. 4920 trivial. 0 not checked. [2020-10-14 18:03:40,960 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1203142685] [2020-10-14 18:03:40,960 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:03:40,960 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44] total 44 [2020-10-14 18:03:40,960 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639614176] [2020-10-14 18:03:40,960 INFO L459 AbstractCegarLoop]: Interpolant automaton has 44 states [2020-10-14 18:03:40,961 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:03:40,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2020-10-14 18:03:40,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=905, Invalid=987, Unknown=0, NotChecked=0, Total=1892 [2020-10-14 18:03:40,962 INFO L87 Difference]: Start difference. First operand 310 states and 317 transitions. Second operand 44 states. [2020-10-14 18:03:41,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:03:41,726 INFO L93 Difference]: Finished difference Result 580 states and 600 transitions. [2020-10-14 18:03:41,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-10-14 18:03:41,727 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 305 [2020-10-14 18:03:41,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:03:41,729 INFO L225 Difference]: With dead ends: 580 [2020-10-14 18:03:41,729 INFO L226 Difference]: Without dead ends: 317 [2020-10-14 18:03:41,731 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=905, Invalid=987, Unknown=0, NotChecked=0, Total=1892 [2020-10-14 18:03:41,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2020-10-14 18:03:41,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 317. [2020-10-14 18:03:41,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 317 states. [2020-10-14 18:03:41,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 324 transitions. [2020-10-14 18:03:41,739 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 324 transitions. Word has length 305 [2020-10-14 18:03:41,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:03:41,740 INFO L479 AbstractCegarLoop]: Abstraction has 317 states and 324 transitions. [2020-10-14 18:03:41,740 INFO L480 AbstractCegarLoop]: Interpolant automaton has 44 states. [2020-10-14 18:03:41,740 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 324 transitions. [2020-10-14 18:03:41,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2020-10-14 18:03:41,742 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:03:41,742 INFO L422 BasicCegarLoop]: trace histogram [41, 41, 41, 41, 41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:03:41,742 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-14 18:03:41,742 INFO L427 AbstractCegarLoop]: === Iteration 42 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:03:41,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:03:41,743 INFO L82 PathProgramCache]: Analyzing trace with hash -189406809, now seen corresponding path program 41 times [2020-10-14 18:03:41,743 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:03:41,743 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [343047741] [2020-10-14 18:03:41,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:03:41,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:03:41,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:03:42,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:03:42,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:03:42,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:03:46,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:03:46,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:03:46,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 320 [2020-10-14 18:03:46,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 18:03:46,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5041 [2020-10-14 18:03:46,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:03:46,814 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:03:46,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 43 [2020-10-14 18:03:46,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-10-14 18:03:46,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-14 18:03:46,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0