/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/reducercommutativity/max20-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 07:37:59,431 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 07:37:59,433 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 07:37:59,460 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 07:37:59,460 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 07:37:59,461 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 07:37:59,463 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 07:37:59,464 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 07:37:59,466 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 07:37:59,467 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 07:37:59,468 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 07:37:59,469 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 07:37:59,469 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 07:37:59,470 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 07:37:59,471 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 07:37:59,472 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 07:37:59,473 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 07:37:59,474 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 07:37:59,475 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 07:37:59,477 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 07:37:59,478 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 07:37:59,480 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 07:37:59,481 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 07:37:59,481 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 07:37:59,484 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 07:37:59,484 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 07:37:59,484 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 07:37:59,485 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 07:37:59,486 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 07:37:59,487 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 07:37:59,487 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 07:37:59,487 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 07:37:59,488 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 07:37:59,489 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 07:37:59,490 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 07:37:59,490 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 07:37:59,491 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 07:37:59,491 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 07:37:59,491 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 07:37:59,492 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 07:37:59,493 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 07:37:59,494 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 07:37:59,533 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 07:37:59,533 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 07:37:59,538 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 07:37:59,538 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 07:37:59,538 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 07:37:59,539 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 07:37:59,539 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 07:37:59,539 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 07:37:59,539 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 07:37:59,539 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 07:37:59,539 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 07:37:59,540 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 07:37:59,540 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 07:37:59,540 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 07:37:59,540 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 07:37:59,540 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 07:37:59,541 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 07:37:59,541 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 07:37:59,541 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 07:37:59,541 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 07:37:59,541 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 07:37:59,541 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 07:37:59,542 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 07:37:59,543 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 07:37:59,544 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 07:37:59,544 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 07:37:59,544 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 07:37:59,544 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 07:37:59,544 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 07:37:59,545 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 07:37:59,877 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 07:37:59,899 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 07:37:59,905 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 07:37:59,908 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 07:37:59,908 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 07:37:59,909 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/reducercommutativity/max20-1.i [2020-10-14 07:37:59,988 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6e6b53be1/d1a60fbda63b435d8a77765f6b9c4f00/FLAGa72784c91 [2020-10-14 07:38:00,456 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 07:38:00,456 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/reducercommutativity/max20-1.i [2020-10-14 07:38:00,464 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6e6b53be1/d1a60fbda63b435d8a77765f6b9c4f00/FLAGa72784c91 [2020-10-14 07:38:00,825 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6e6b53be1/d1a60fbda63b435d8a77765f6b9c4f00 [2020-10-14 07:38:00,836 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 07:38:00,838 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 07:38:00,840 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 07:38:00,840 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 07:38:00,844 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 07:38:00,845 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:38:00" (1/1) ... [2020-10-14 07:38:00,848 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3219bb53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:38:00, skipping insertion in model container [2020-10-14 07:38:00,848 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:38:00" (1/1) ... [2020-10-14 07:38:00,856 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 07:38:00,874 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 07:38:01,062 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 07:38:01,072 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 07:38:01,093 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 07:38:01,109 INFO L208 MainTranslator]: Completed translation [2020-10-14 07:38:01,110 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:38:01 WrapperNode [2020-10-14 07:38:01,110 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 07:38:01,111 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 07:38:01,111 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 07:38:01,111 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 07:38:01,221 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:38:01" (1/1) ... [2020-10-14 07:38:01,222 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:38:01" (1/1) ... [2020-10-14 07:38:01,231 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:38:01" (1/1) ... [2020-10-14 07:38:01,231 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:38:01" (1/1) ... [2020-10-14 07:38:01,240 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:38:01" (1/1) ... [2020-10-14 07:38:01,246 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:38:01" (1/1) ... [2020-10-14 07:38:01,248 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:38:01" (1/1) ... [2020-10-14 07:38:01,250 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 07:38:01,251 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 07:38:01,251 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 07:38:01,251 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 07:38:01,252 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:38:01" (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 07:38:01,310 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 07:38:01,310 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 07:38:01,310 INFO L138 BoogieDeclarations]: Found implementation of procedure max [2020-10-14 07:38:01,311 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 07:38:01,311 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 07:38:01,311 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 07:38:01,311 INFO L130 BoogieDeclarations]: Found specification of procedure max [2020-10-14 07:38:01,311 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-14 07:38:01,311 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 07:38:01,311 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-14 07:38:01,312 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-14 07:38:01,312 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 07:38:01,312 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 07:38:01,312 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 07:38:01,603 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 07:38:01,604 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-14 07:38:01,608 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:38:01 BoogieIcfgContainer [2020-10-14 07:38:01,609 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 07:38:01,610 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 07:38:01,610 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 07:38:01,614 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 07:38:01,614 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 07:38:00" (1/3) ... [2020-10-14 07:38:01,615 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c8029aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:38:01, skipping insertion in model container [2020-10-14 07:38:01,615 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:38:01" (2/3) ... [2020-10-14 07:38:01,616 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c8029aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:38:01, skipping insertion in model container [2020-10-14 07:38:01,616 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:38:01" (3/3) ... [2020-10-14 07:38:01,618 INFO L109 eAbstractionObserver]: Analyzing ICFG max20-1.i [2020-10-14 07:38:01,630 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 07:38:01,640 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 07:38:01,670 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 07:38:01,714 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 07:38:01,714 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 07:38:01,714 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 07:38:01,715 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 07:38:01,715 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 07:38:01,715 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 07:38:01,715 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 07:38:01,715 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 07:38:01,733 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-10-14 07:38:01,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-14 07:38:01,739 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:38:01,740 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:38:01,740 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:38:01,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:38:01,745 INFO L82 PathProgramCache]: Analyzing trace with hash 1379671032, now seen corresponding path program 1 times [2020-10-14 07:38:01,754 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:38:01,755 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [804500368] [2020-10-14 07:38:01,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:38:01,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:01,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:01,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:01,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:02,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:02,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:02,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:03,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:03,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-14 07:38:03,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 07:38:03,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1414 [2020-10-14 07:38:03,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:03,290 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:03,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:03,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-14 07:38:03,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:03,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 07:38:03,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:38:03,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:03,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:03,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:03,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:38:03,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:38:03,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 07:38:03,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:03,377 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:03,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:03,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:38:03,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:03,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:38:03,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 07:38:03,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:03,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:03,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:03,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:03,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 07:38:03,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:38:03,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 07:38:03,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:03,399 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:03,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:03,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-14 07:38:03,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:03,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:38:03,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-14 07:38:03,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:03,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:03,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:03,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 07:38:03,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:38:03,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 07:38:03,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:03,413 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:03,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:03,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-14 07:38:03,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:03,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:38:03,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 07:38:03,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:03,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:03,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:03,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:03,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 07:38:03,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:38:03,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 07:38:03,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:03,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:03,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:03,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 07:38:03,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:03,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:38:03,446 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-14 07:38:03,448 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [804500368] [2020-10-14 07:38:03,450 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:38:03,450 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-10-14 07:38:03,452 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987453244] [2020-10-14 07:38:03,459 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 07:38:03,460 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:38:03,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 07:38:03,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 07:38:03,481 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 3 states. [2020-10-14 07:38:03,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:38:03,615 INFO L93 Difference]: Finished difference Result 58 states and 77 transitions. [2020-10-14 07:38:03,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 07:38:03,618 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 32 [2020-10-14 07:38:03,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:38:03,629 INFO L225 Difference]: With dead ends: 58 [2020-10-14 07:38:03,629 INFO L226 Difference]: Without dead ends: 28 [2020-10-14 07:38:03,635 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 07:38:03,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-14 07:38:03,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-10-14 07:38:03,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-14 07:38:03,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2020-10-14 07:38:03,710 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 32 [2020-10-14 07:38:03,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:38:03,711 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions. [2020-10-14 07:38:03,711 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 07:38:03,711 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2020-10-14 07:38:03,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-14 07:38:03,716 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:38:03,716 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:38:03,716 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 07:38:03,717 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:38:03,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:38:03,717 INFO L82 PathProgramCache]: Analyzing trace with hash 1771965707, now seen corresponding path program 1 times [2020-10-14 07:38:03,717 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:38:03,718 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [431983227] [2020-10-14 07:38:03,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:38:03,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:03,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:03,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:03,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:03,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:03,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:04,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:05,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:05,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-14 07:38:05,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 07:38:05,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1285 [2020-10-14 07:38:05,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:05,020 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:05,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 07:38:05,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-14 07:38:05,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 07:38:05,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:38:05,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:38:05,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:05,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:05,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:05,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:38:05,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:38:05,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 07:38:05,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:05,072 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:05,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:05,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:38:05,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:05,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:38:05,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 07:38:05,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:05,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:05,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:05,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:05,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 07:38:05,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:38:05,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 07:38:05,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:05,094 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:05,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:05,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:38:05,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:05,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:38:05,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-14 07:38:05,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:05,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:05,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:05,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:05,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 07:38:05,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:38:05,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 07:38:05,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:05,123 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:05,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:05,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:38:05,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:05,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 07:38:05,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 07:38:05,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:05,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:05,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:05,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:05,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 07:38:05,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:38:05,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 07:38:05,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:05,152 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:05,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:05,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 07:38:05,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:05,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:38:05,160 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-14 07:38:05,161 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [431983227] [2020-10-14 07:38:05,161 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 07:38:05,162 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 07:38:05,163 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713948064] [2020-10-14 07:38:05,167 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 07:38:05,168 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:38:05,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 07:38:05,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 07:38:05,169 INFO L87 Difference]: Start difference. First operand 28 states and 33 transitions. Second operand 4 states. [2020-10-14 07:38:05,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:38:05,297 INFO L93 Difference]: Finished difference Result 44 states and 51 transitions. [2020-10-14 07:38:05,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 07:38:05,299 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2020-10-14 07:38:05,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:38:05,300 INFO L225 Difference]: With dead ends: 44 [2020-10-14 07:38:05,300 INFO L226 Difference]: Without dead ends: 30 [2020-10-14 07:38:05,301 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 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 07:38:05,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-14 07:38:05,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2020-10-14 07:38:05,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-14 07:38:05,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 34 transitions. [2020-10-14 07:38:05,319 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 34 transitions. Word has length 32 [2020-10-14 07:38:05,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:38:05,323 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 34 transitions. [2020-10-14 07:38:05,324 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 07:38:05,324 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2020-10-14 07:38:05,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-14 07:38:05,329 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:38:05,330 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 07:38:05,330 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 07:38:05,330 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:38:05,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:38:05,331 INFO L82 PathProgramCache]: Analyzing trace with hash 963145065, now seen corresponding path program 1 times [2020-10-14 07:38:05,332 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:38:05,332 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [92089957] [2020-10-14 07:38:05,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:38:05,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:05,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:05,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:05,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:05,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:05,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:06,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:06,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:06,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-14 07:38:06,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 07:38:06,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1530 [2020-10-14 07:38:06,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:06,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:06,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 07:38:06,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-14 07:38:06,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 07:38:06,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:38:06,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:38:06,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:06,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:06,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:06,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:38:06,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:38:06,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 07:38:06,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:06,902 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:06,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:06,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:38:06,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:06,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:38:06,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 07:38:06,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:06,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:06,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:06,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:06,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 07:38:06,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:38:06,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 07:38:06,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:06,914 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:06,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:06,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:38:06,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:06,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:38:06,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-14 07:38:06,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:06,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:06,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:06,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 07:38:06,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:38:06,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 07:38:06,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:06,926 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:06,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 07:38:06,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 07:38:06,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 07:38:06,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:38:06,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-14 07:38:06,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:06,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:06,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:06,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:06,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 07:38:06,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:38:06,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 07:38:06,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:06,950 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:06,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:06,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 07:38:06,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:06,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:38:06,955 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-14 07:38:06,956 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [92089957] [2020-10-14 07:38:06,956 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:38:06,956 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-10-14 07:38:06,957 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335017222] [2020-10-14 07:38:06,957 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 07:38:06,957 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:38:06,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 07:38:06,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 07:38:06,958 INFO L87 Difference]: Start difference. First operand 29 states and 34 transitions. Second operand 4 states. [2020-10-14 07:38:07,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:38:07,046 INFO L93 Difference]: Finished difference Result 53 states and 66 transitions. [2020-10-14 07:38:07,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 07:38:07,046 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2020-10-14 07:38:07,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:38:07,047 INFO L225 Difference]: With dead ends: 53 [2020-10-14 07:38:07,048 INFO L226 Difference]: Without dead ends: 33 [2020-10-14 07:38:07,048 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 07:38:07,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-10-14 07:38:07,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 30. [2020-10-14 07:38:07,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-14 07:38:07,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2020-10-14 07:38:07,056 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 34 [2020-10-14 07:38:07,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:38:07,056 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2020-10-14 07:38:07,056 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 07:38:07,056 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2020-10-14 07:38:07,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-14 07:38:07,058 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:38:07,058 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-10-14 07:38:07,058 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 07:38:07,059 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:38:07,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:38:07,059 INFO L82 PathProgramCache]: Analyzing trace with hash -822081532, now seen corresponding path program 1 times [2020-10-14 07:38:07,059 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:38:07,060 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2002258553] [2020-10-14 07:38:07,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:38:07,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:07,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:07,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:07,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:07,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:07,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:12,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:12,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-14 07:38:12,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 07:38:12,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-14 07:38:12,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:12,085 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:12,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 07:38:12,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 07:38:12,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 07:38:12,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:38:12,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:38:12,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:12,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:12,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:12,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:38:12,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:38:12,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 07:38:12,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:12,131 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:12,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:12,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:38:12,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:12,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 07:38:12,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 07:38:12,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:12,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:12,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:12,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:12,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 07:38:12,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:38:12,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-14 07:38:12,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:12,192 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:12,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:12,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 07:38:12,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:12,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:12,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-14 07:38:12,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:12,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:12,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:12,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:12,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 07:38:12,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:38:12,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-14 07:38:12,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:12,225 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:12,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:12,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 07:38:12,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:12,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:38:12,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-14 07:38:12,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:12,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:12,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:12,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:12,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 07:38:12,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:38:12,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-14 07:38:12,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:12,261 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:12,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:12,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 07:38:12,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:12,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:38:12,269 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2020-10-14 07:38:12,270 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2002258553] [2020-10-14 07:38:12,270 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 07:38:12,271 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 07:38:12,271 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022407333] [2020-10-14 07:38:12,271 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 07:38:12,272 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:38:12,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 07:38:12,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 07:38:12,273 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand 4 states. [2020-10-14 07:38:12,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:38:12,375 INFO L93 Difference]: Finished difference Result 54 states and 64 transitions. [2020-10-14 07:38:12,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 07:38:12,376 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 46 [2020-10-14 07:38:12,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:38:12,377 INFO L225 Difference]: With dead ends: 54 [2020-10-14 07:38:12,377 INFO L226 Difference]: Without dead ends: 32 [2020-10-14 07:38:12,378 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 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 07:38:12,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-14 07:38:12,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2020-10-14 07:38:12,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-14 07:38:12,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2020-10-14 07:38:12,385 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 46 [2020-10-14 07:38:12,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:38:12,385 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2020-10-14 07:38:12,385 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 07:38:12,386 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2020-10-14 07:38:12,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-14 07:38:12,387 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:38:12,387 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-10-14 07:38:12,388 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 07:38:12,388 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:38:12,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:38:12,388 INFO L82 PathProgramCache]: Analyzing trace with hash -270429754, now seen corresponding path program 1 times [2020-10-14 07:38:12,389 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:38:12,389 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1038878757] [2020-10-14 07:38:12,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:38:12,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:12,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:12,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:12,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:12,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:12,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:17,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:17,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-14 07:38:17,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 07:38:17,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-14 07:38:17,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:17,412 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:17,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 07:38:17,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-14 07:38:17,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 07:38:17,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:38:17,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:38:17,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:17,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:17,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:17,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:38:17,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:38:17,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:38:17,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:17,448 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:17,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:17,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:38:17,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:17,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:38:17,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 07:38:17,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:17,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:17,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:17,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:17,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 07:38:17,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:38:17,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 07:38:17,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:17,477 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:17,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:17,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:38:17,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:17,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:38:17,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 07:38:17,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:17,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:17,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:17,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:17,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 07:38:17,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:38:17,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 07:38:17,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:17,509 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:17,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:17,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:38:17,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:17,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:38:17,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-14 07:38:17,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:17,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:17,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:17,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 07:38:17,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:38:17,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 07:38:17,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:17,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:17,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 07:38:17,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 07:38:17,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 07:38:17,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:38:17,564 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 20 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-10-14 07:38:17,565 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1038878757] [2020-10-14 07:38:17,566 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:38:17,567 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 07:38:17,567 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130767515] [2020-10-14 07:38:17,567 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 07:38:17,568 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:38:17,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 07:38:17,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 07:38:17,568 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand 5 states. [2020-10-14 07:38:17,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:38:17,714 INFO L93 Difference]: Finished difference Result 59 states and 73 transitions. [2020-10-14 07:38:17,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 07:38:17,715 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 48 [2020-10-14 07:38:17,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:38:17,716 INFO L225 Difference]: With dead ends: 59 [2020-10-14 07:38:17,716 INFO L226 Difference]: Without dead ends: 38 [2020-10-14 07:38:17,717 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-14 07:38:17,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-14 07:38:17,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 35. [2020-10-14 07:38:17,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-14 07:38:17,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 41 transitions. [2020-10-14 07:38:17,732 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 41 transitions. Word has length 48 [2020-10-14 07:38:17,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:38:17,733 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 41 transitions. [2020-10-14 07:38:17,733 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 07:38:17,733 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 41 transitions. [2020-10-14 07:38:17,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-14 07:38:17,735 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:38:17,736 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 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] [2020-10-14 07:38:17,736 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 07:38:17,736 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:38:17,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:38:17,737 INFO L82 PathProgramCache]: Analyzing trace with hash -1201649439, now seen corresponding path program 2 times [2020-10-14 07:38:17,737 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:38:17,737 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1103260925] [2020-10-14 07:38:17,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:38:17,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:17,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:17,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:17,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:17,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:17,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:21,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:22,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:22,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 07:38:22,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 07:38:22,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 07:38:22,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:22,748 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:22,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 07:38:22,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-14 07:38:22,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 07:38:22,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:22,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:38:22,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:22,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:22,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:22,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:38:22,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:38:22,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:38:22,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:22,776 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:22,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:22,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:38:22,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:22,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:38:22,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 07:38:22,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:22,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:22,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:22,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:22,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 07:38:22,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:38:22,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-14 07:38:22,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:22,813 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:22,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:22,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:38:22,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:22,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:38:22,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-14 07:38:22,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:22,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:22,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:22,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 07:38:22,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:38:22,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 07:38:22,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:22,844 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:22,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 07:38:22,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 07:38:22,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 07:38:22,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:38:22,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-14 07:38:22,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:22,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:22,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:22,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:22,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 07:38:22,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:38:22,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-14 07:38:22,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:22,905 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:22,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:22,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 07:38:22,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:22,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:38:22,912 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 24 proven. 30 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2020-10-14 07:38:22,913 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1103260925] [2020-10-14 07:38:22,913 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:38:22,913 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 07:38:22,913 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799284129] [2020-10-14 07:38:22,914 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 07:38:22,914 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:38:22,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 07:38:22,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 07:38:22,915 INFO L87 Difference]: Start difference. First operand 35 states and 41 transitions. Second operand 6 states. [2020-10-14 07:38:23,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:38:23,044 INFO L93 Difference]: Finished difference Result 67 states and 83 transitions. [2020-10-14 07:38:23,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 07:38:23,044 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 60 [2020-10-14 07:38:23,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:38:23,046 INFO L225 Difference]: With dead ends: 67 [2020-10-14 07:38:23,046 INFO L226 Difference]: Without dead ends: 42 [2020-10-14 07:38:23,047 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-14 07:38:23,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-14 07:38:23,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 39. [2020-10-14 07:38:23,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-14 07:38:23,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 46 transitions. [2020-10-14 07:38:23,053 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 46 transitions. Word has length 60 [2020-10-14 07:38:23,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:38:23,054 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 46 transitions. [2020-10-14 07:38:23,054 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 07:38:23,054 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 46 transitions. [2020-10-14 07:38:23,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-14 07:38:23,055 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:38:23,055 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 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] [2020-10-14 07:38:23,055 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 07:38:23,056 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:38:23,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:38:23,056 INFO L82 PathProgramCache]: Analyzing trace with hash 1350889340, now seen corresponding path program 3 times [2020-10-14 07:38:23,056 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:38:23,056 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1288422138] [2020-10-14 07:38:23,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:38:23,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:23,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:23,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:23,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:23,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:24,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:24,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:24,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:26,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:28,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:28,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-14 07:38:28,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 07:38:28,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 07:38:28,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:28,071 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:28,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 07:38:28,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 07:38:28,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 07:38:28,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:38:28,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:38:28,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:28,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:28,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:28,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:38:28,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:38:28,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 07:38:28,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:28,119 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:28,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:28,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:38:28,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:28,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 07:38:28,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 07:38:28,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:28,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:28,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:28,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:28,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 07:38:28,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:38:28,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-14 07:38:28,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:28,176 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:28,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:28,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 07:38:28,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:28,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:38:28,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-14 07:38:28,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:28,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:28,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:28,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:28,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 07:38:28,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:38:28,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-14 07:38:28,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:28,238 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:28,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:28,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 07:38:28,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:28,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:38:28,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-14 07:38:28,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:28,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:28,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:28,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:28,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 07:38:28,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:38:28,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-14 07:38:28,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:28,300 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:28,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:28,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 07:38:28,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:28,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 07:38:28,318 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2020-10-14 07:38:28,319 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1288422138] [2020-10-14 07:38:28,319 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:38:28,319 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 07:38:28,320 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115304153] [2020-10-14 07:38:28,322 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 07:38:28,323 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:38:28,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 07:38:28,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 07:38:28,324 INFO L87 Difference]: Start difference. First operand 39 states and 46 transitions. Second operand 5 states. [2020-10-14 07:38:28,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:38:28,462 INFO L93 Difference]: Finished difference Result 72 states and 86 transitions. [2020-10-14 07:38:28,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 07:38:28,463 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 72 [2020-10-14 07:38:28,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:38:28,465 INFO L225 Difference]: With dead ends: 72 [2020-10-14 07:38:28,465 INFO L226 Difference]: Without dead ends: 42 [2020-10-14 07:38:28,467 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 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 07:38:28,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-14 07:38:28,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2020-10-14 07:38:28,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-14 07:38:28,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 48 transitions. [2020-10-14 07:38:28,480 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 48 transitions. Word has length 72 [2020-10-14 07:38:28,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:38:28,483 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 48 transitions. [2020-10-14 07:38:28,483 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 07:38:28,483 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 48 transitions. [2020-10-14 07:38:28,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-14 07:38:28,487 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:38:28,488 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:38:28,488 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 07:38:28,488 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:38:28,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:38:28,489 INFO L82 PathProgramCache]: Analyzing trace with hash -74716482, now seen corresponding path program 4 times [2020-10-14 07:38:28,489 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:38:28,490 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [894234557] [2020-10-14 07:38:28,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:38:28,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:28,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:28,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:28,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:28,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:28,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:33,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:33,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-14 07:38:33,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 07:38:33,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 07:38:33,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:33,514 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:33,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 07:38:33,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 07:38:33,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 07:38:33,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:38:33,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:38:33,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:33,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:33,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:33,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:38:33,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:38:33,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:38:33,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:33,554 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:33,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:33,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:38:33,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:33,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:33,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-14 07:38:33,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:33,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:33,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:33,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:33,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 07:38:33,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:38:33,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-14 07:38:33,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:33,590 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:33,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:33,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 07:38:33,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:33,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:38:33,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 07:38:33,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:33,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:33,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:33,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:33,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 07:38:33,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:38:33,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-14 07:38:33,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:33,627 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:33,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:33,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 07:38:33,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:33,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:38:33,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-14 07:38:33,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:33,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:33,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:33,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:33,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 07:38:33,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:38:33,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-14 07:38:33,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:33,673 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:33,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:33,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 07:38:33,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:33,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:38:33,682 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2020-10-14 07:38:33,682 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [894234557] [2020-10-14 07:38:33,682 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:38:33,683 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 07:38:33,683 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549403205] [2020-10-14 07:38:33,684 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 07:38:33,684 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:38:33,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 07:38:33,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 07:38:33,685 INFO L87 Difference]: Start difference. First operand 41 states and 48 transitions. Second operand 6 states. [2020-10-14 07:38:33,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:38:33,769 INFO L93 Difference]: Finished difference Result 74 states and 88 transitions. [2020-10-14 07:38:33,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 07:38:33,769 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 74 [2020-10-14 07:38:33,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:38:33,770 INFO L225 Difference]: With dead ends: 74 [2020-10-14 07:38:33,770 INFO L226 Difference]: Without dead ends: 44 [2020-10-14 07:38:33,773 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 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 07:38:33,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-14 07:38:33,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2020-10-14 07:38:33,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-14 07:38:33,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 50 transitions. [2020-10-14 07:38:33,783 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 50 transitions. Word has length 74 [2020-10-14 07:38:33,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:38:33,783 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 50 transitions. [2020-10-14 07:38:33,783 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 07:38:33,783 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 50 transitions. [2020-10-14 07:38:33,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-14 07:38:33,788 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:38:33,788 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 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] [2020-10-14 07:38:33,789 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 07:38:33,789 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:38:33,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:38:33,790 INFO L82 PathProgramCache]: Analyzing trace with hash 12656000, now seen corresponding path program 5 times [2020-10-14 07:38:33,790 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:38:33,790 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1062316776] [2020-10-14 07:38:33,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:38:33,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:33,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:33,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:33,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:33,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:33,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:38,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:38,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 07:38:38,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 07:38:38,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-14 07:38:38,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:38,810 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:38,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 07:38:38,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-10-14 07:38:38,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 07:38:38,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:38,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:38:38,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:38,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:38,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:38,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:38:38,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:38:38,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:38:38,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:38,849 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:38,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:38,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:38:38,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:38,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:38,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-14 07:38:38,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:38,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:38,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:38,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:38,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 07:38:38,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:38:38,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-14 07:38:38,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:38,884 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:38,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:38,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:38:38,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:38,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:38:38,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-14 07:38:38,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:38,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:38,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:38,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:38,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 07:38:38,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:38:38,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-14 07:38:38,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:38,922 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:38,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:38,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:38:38,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:38,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:38,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-14 07:38:38,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:38,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:38,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:38,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:38,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 07:38:38,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:38:38,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-14 07:38:38,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:38,955 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:38,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:38,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 07:38:38,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:38,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:38:38,972 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2020-10-14 07:38:38,978 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1062316776] [2020-10-14 07:38:38,979 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:38:38,979 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 07:38:38,979 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095565079] [2020-10-14 07:38:38,982 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 07:38:38,982 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:38:38,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 07:38:38,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 07:38:38,984 INFO L87 Difference]: Start difference. First operand 43 states and 50 transitions. Second operand 5 states. [2020-10-14 07:38:39,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:38:39,064 INFO L93 Difference]: Finished difference Result 69 states and 80 transitions. [2020-10-14 07:38:39,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 07:38:39,065 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 76 [2020-10-14 07:38:39,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:38:39,066 INFO L225 Difference]: With dead ends: 69 [2020-10-14 07:38:39,067 INFO L226 Difference]: Without dead ends: 46 [2020-10-14 07:38:39,067 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 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 07:38:39,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-14 07:38:39,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2020-10-14 07:38:39,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-14 07:38:39,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 52 transitions. [2020-10-14 07:38:39,076 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 52 transitions. Word has length 76 [2020-10-14 07:38:39,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:38:39,077 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 52 transitions. [2020-10-14 07:38:39,077 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 07:38:39,077 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 52 transitions. [2020-10-14 07:38:39,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-14 07:38:39,083 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:38:39,083 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:38:39,083 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 07:38:39,083 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:38:39,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:38:39,084 INFO L82 PathProgramCache]: Analyzing trace with hash 1164255198, now seen corresponding path program 6 times [2020-10-14 07:38:39,084 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:38:39,084 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1488758406] [2020-10-14 07:38:39,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:38:39,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:39,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:39,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:39,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:39,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:39,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:44,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:44,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-14 07:38:44,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 07:38:44,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-14 07:38:44,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:44,106 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:44,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 07:38:44,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-14 07:38:44,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 07:38:44,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:44,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:38:44,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:44,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:44,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:44,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:38:44,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:38:44,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:38:44,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:44,135 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:44,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:44,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:38:44,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:44,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:44,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-14 07:38:44,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:44,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:44,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:44,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 07:38:44,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:38:44,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 07:38:44,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:44,161 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:44,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 07:38:44,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 07:38:44,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 07:38:44,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:44,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-14 07:38:44,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:44,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:44,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:44,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:44,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 07:38:44,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:38:44,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 07:38:44,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:44,225 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:44,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:44,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 07:38:44,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:44,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:44,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-14 07:38:44,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:44,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:44,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:44,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:44,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 07:38:44,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:38:44,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 07:38:44,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:44,255 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:44,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:44,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 07:38:44,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:44,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:44,264 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 0 proven. 107 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2020-10-14 07:38:44,265 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1488758406] [2020-10-14 07:38:44,265 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:38:44,265 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 07:38:44,265 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366249820] [2020-10-14 07:38:44,266 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 07:38:44,266 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:38:44,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 07:38:44,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-14 07:38:44,266 INFO L87 Difference]: Start difference. First operand 45 states and 52 transitions. Second operand 7 states. [2020-10-14 07:38:44,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:38:44,414 INFO L93 Difference]: Finished difference Result 83 states and 101 transitions. [2020-10-14 07:38:44,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 07:38:44,415 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 78 [2020-10-14 07:38:44,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:38:44,416 INFO L225 Difference]: With dead ends: 83 [2020-10-14 07:38:44,416 INFO L226 Difference]: Without dead ends: 52 [2020-10-14 07:38:44,416 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2020-10-14 07:38:44,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-14 07:38:44,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 49. [2020-10-14 07:38:44,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-14 07:38:44,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 57 transitions. [2020-10-14 07:38:44,422 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 57 transitions. Word has length 78 [2020-10-14 07:38:44,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:38:44,422 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 57 transitions. [2020-10-14 07:38:44,422 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 07:38:44,422 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 57 transitions. [2020-10-14 07:38:44,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-14 07:38:44,423 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:38:44,424 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:38:44,424 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 07:38:44,424 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:38:44,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:38:44,424 INFO L82 PathProgramCache]: Analyzing trace with hash 276420857, now seen corresponding path program 7 times [2020-10-14 07:38:44,425 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:38:44,425 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2077976180] [2020-10-14 07:38:44,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:38:44,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:44,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:44,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:44,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:44,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:44,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:49,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:49,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-14 07:38:49,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 07:38:49,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 07:38:49,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:49,438 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:49,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 07:38:49,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 07:38:49,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 07:38:49,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:49,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:38:49,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:49,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:49,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:49,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:38:49,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:38:49,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 07:38:49,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:49,484 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:49,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:49,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:38:49,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:49,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:49,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-14 07:38:49,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:49,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:49,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:49,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:49,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 07:38:49,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:38:49,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-14 07:38:49,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:49,541 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:49,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:49,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-14 07:38:49,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:49,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:49,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-14 07:38:49,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:49,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:49,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:49,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:49,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 07:38:49,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:38:49,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-14 07:38:49,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:49,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:49,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:49,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-14 07:38:49,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:49,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:49,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-14 07:38:49,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:49,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:49,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:49,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:49,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 07:38:49,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:38:49,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-14 07:38:49,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:49,644 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:49,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:49,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-14 07:38:49,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:49,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:49,652 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 319 trivial. 0 not checked. [2020-10-14 07:38:49,652 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2077976180] [2020-10-14 07:38:49,653 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:38:49,653 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 07:38:49,653 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440396630] [2020-10-14 07:38:49,653 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 07:38:49,653 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:38:49,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 07:38:49,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-14 07:38:49,654 INFO L87 Difference]: Start difference. First operand 49 states and 57 transitions. Second operand 7 states. [2020-10-14 07:38:49,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:38:49,753 INFO L93 Difference]: Finished difference Result 88 states and 104 transitions. [2020-10-14 07:38:49,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 07:38:49,754 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 90 [2020-10-14 07:38:49,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:38:49,755 INFO L225 Difference]: With dead ends: 88 [2020-10-14 07:38:49,755 INFO L226 Difference]: Without dead ends: 52 [2020-10-14 07:38:49,756 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 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 07:38:49,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-14 07:38:49,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 51. [2020-10-14 07:38:49,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-14 07:38:49,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 59 transitions. [2020-10-14 07:38:49,761 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 59 transitions. Word has length 90 [2020-10-14 07:38:49,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:38:49,761 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 59 transitions. [2020-10-14 07:38:49,761 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 07:38:49,761 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 59 transitions. [2020-10-14 07:38:49,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-14 07:38:49,762 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:38:49,762 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:38:49,763 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 07:38:49,763 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:38:49,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:38:49,763 INFO L82 PathProgramCache]: Analyzing trace with hash 1506101179, now seen corresponding path program 8 times [2020-10-14 07:38:49,763 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:38:49,764 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1860727609] [2020-10-14 07:38:49,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:38:49,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:49,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:49,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:49,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:49,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:50,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:54,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:54,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-14 07:38:54,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 07:38:54,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-14 07:38:54,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:54,782 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:54,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 07:38:54,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-14 07:38:54,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 07:38:54,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:54,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:38:54,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:54,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:54,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:54,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:38:54,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:38:54,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:38:54,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:54,832 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:54,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:54,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:38:54,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:54,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:54,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-14 07:38:54,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:54,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:54,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:54,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:54,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 07:38:54,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:38:54,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-14 07:38:54,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:54,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:54,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:54,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:38:54,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:54,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:54,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-14 07:38:54,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:54,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:54,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:54,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:54,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 07:38:54,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:38:54,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-14 07:38:54,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:54,931 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:54,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:54,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:38:54,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:54,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:54,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-14 07:38:54,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:54,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:54,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:54,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:54,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 07:38:54,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:38:54,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-14 07:38:54,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:54,998 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:54,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:54,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-14 07:38:54,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:54,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:55,007 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 331 trivial. 0 not checked. [2020-10-14 07:38:55,008 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1860727609] [2020-10-14 07:38:55,008 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:38:55,008 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 07:38:55,008 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061525634] [2020-10-14 07:38:55,008 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 07:38:55,009 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:38:55,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 07:38:55,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 07:38:55,009 INFO L87 Difference]: Start difference. First operand 51 states and 59 transitions. Second operand 6 states. [2020-10-14 07:38:55,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:38:55,111 INFO L93 Difference]: Finished difference Result 81 states and 94 transitions. [2020-10-14 07:38:55,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 07:38:55,112 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 92 [2020-10-14 07:38:55,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:38:55,113 INFO L225 Difference]: With dead ends: 81 [2020-10-14 07:38:55,113 INFO L226 Difference]: Without dead ends: 54 [2020-10-14 07:38:55,114 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 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 07:38:55,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-14 07:38:55,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 53. [2020-10-14 07:38:55,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-14 07:38:55,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 61 transitions. [2020-10-14 07:38:55,120 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 61 transitions. Word has length 92 [2020-10-14 07:38:55,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:38:55,120 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 61 transitions. [2020-10-14 07:38:55,120 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 07:38:55,120 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 61 transitions. [2020-10-14 07:38:55,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-14 07:38:55,121 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:38:55,121 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 4, 4, 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] [2020-10-14 07:38:55,121 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 07:38:55,121 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:38:55,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:38:55,122 INFO L82 PathProgramCache]: Analyzing trace with hash -1361671399, now seen corresponding path program 9 times [2020-10-14 07:38:55,122 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:38:55,122 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [648848762] [2020-10-14 07:38:55,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:38:55,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:55,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:55,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:55,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:55,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:55,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:00,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:00,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-14 07:39:00,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 07:39:00,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-14 07:39:00,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:00,144 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:00,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 07:39:00,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-14 07:39:00,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 07:39:00,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:00,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:39:00,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:00,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:00,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:00,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:39:00,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:39:00,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 07:39:00,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:00,177 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:00,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:39:00,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:39:00,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:39:00,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 07:39:00,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-14 07:39:00,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:00,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:00,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:00,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:00,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 07:39:00,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:39:00,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-14 07:39:00,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:00,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:00,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:39:00,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:39:00,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:39:00,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:39:00,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-14 07:39:00,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:00,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:00,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:00,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 07:39:00,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:39:00,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 07:39:00,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:00,268 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:00,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 07:39:00,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 07:39:00,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 07:39:00,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:00,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-14 07:39:00,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:00,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:00,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:00,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:00,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 07:39:00,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:39:00,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-14 07:39:00,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:00,361 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:00,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:39:00,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-14 07:39:00,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:39:00,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:00,372 INFO L134 CoverageAnalysis]: Checked inductivity of 340 backedges. 76 proven. 104 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2020-10-14 07:39:00,372 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [648848762] [2020-10-14 07:39:00,372 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:39:00,373 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 07:39:00,373 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568100935] [2020-10-14 07:39:00,373 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 07:39:00,374 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:39:00,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 07:39:00,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 07:39:00,375 INFO L87 Difference]: Start difference. First operand 53 states and 61 transitions. Second operand 8 states. [2020-10-14 07:39:00,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:39:00,632 INFO L93 Difference]: Finished difference Result 97 states and 117 transitions. [2020-10-14 07:39:00,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 07:39:00,633 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 94 [2020-10-14 07:39:00,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:39:00,635 INFO L225 Difference]: With dead ends: 97 [2020-10-14 07:39:00,635 INFO L226 Difference]: Without dead ends: 60 [2020-10-14 07:39:00,636 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2020-10-14 07:39:00,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-14 07:39:00,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 57. [2020-10-14 07:39:00,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-14 07:39:00,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 66 transitions. [2020-10-14 07:39:00,655 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 66 transitions. Word has length 94 [2020-10-14 07:39:00,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:39:00,658 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 66 transitions. [2020-10-14 07:39:00,658 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 07:39:00,659 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 66 transitions. [2020-10-14 07:39:00,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-14 07:39:00,660 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:39:00,661 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 4, 4, 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] [2020-10-14 07:39:00,661 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 07:39:00,663 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:39:00,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:39:00,664 INFO L82 PathProgramCache]: Analyzing trace with hash -1557009996, now seen corresponding path program 10 times [2020-10-14 07:39:00,664 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:39:00,664 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [162280690] [2020-10-14 07:39:00,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:39:00,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:00,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:00,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:00,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:00,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:01,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:02,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:02,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:05,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:05,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-14 07:39:05,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 07:39:05,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 07:39:05,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:05,694 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:05,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 07:39:05,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-14 07:39:05,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 07:39:05,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:05,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:39:05,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:05,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:05,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:05,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:39:05,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:39:05,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:39:05,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:05,714 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:05,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:39:05,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:39:05,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:39:05,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:05,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-14 07:39:05,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:05,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:05,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:05,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-14 07:39:05,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:39:05,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-14 07:39:05,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:05,766 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:05,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 07:39:05,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 07:39:05,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 07:39:05,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:05,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-14 07:39:05,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:05,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:05,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:05,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:05,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-14 07:39:05,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:39:05,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-14 07:39:05,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:05,915 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:05,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:39:05,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-14 07:39:05,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:39:05,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:39:05,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-14 07:39:05,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:05,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:05,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:06,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:06,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-14 07:39:06,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:39:06,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-14 07:39:06,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:06,011 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:06,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:39:06,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-14 07:39:06,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:39:06,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:39:06,027 INFO L134 CoverageAnalysis]: Checked inductivity of 505 backedges. 0 proven. 273 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2020-10-14 07:39:06,028 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [162280690] [2020-10-14 07:39:06,028 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:39:06,028 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 07:39:06,028 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668753152] [2020-10-14 07:39:06,029 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 07:39:06,029 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:39:06,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 07:39:06,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-14 07:39:06,032 INFO L87 Difference]: Start difference. First operand 57 states and 66 transitions. Second operand 9 states. [2020-10-14 07:39:06,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:39:06,244 INFO L93 Difference]: Finished difference Result 105 states and 127 transitions. [2020-10-14 07:39:06,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 07:39:06,244 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 106 [2020-10-14 07:39:06,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:39:06,245 INFO L225 Difference]: With dead ends: 105 [2020-10-14 07:39:06,245 INFO L226 Difference]: Without dead ends: 64 [2020-10-14 07:39:06,246 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=126, Unknown=0, NotChecked=0, Total=210 [2020-10-14 07:39:06,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-14 07:39:06,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 61. [2020-10-14 07:39:06,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-14 07:39:06,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 71 transitions. [2020-10-14 07:39:06,255 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 71 transitions. Word has length 106 [2020-10-14 07:39:06,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:39:06,256 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 71 transitions. [2020-10-14 07:39:06,256 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 07:39:06,256 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 71 transitions. [2020-10-14 07:39:06,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-14 07:39:06,257 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:39:06,258 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 4, 4, 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] [2020-10-14 07:39:06,258 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 07:39:06,258 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:39:06,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:39:06,258 INFO L82 PathProgramCache]: Analyzing trace with hash 1325692879, now seen corresponding path program 11 times [2020-10-14 07:39:06,259 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:39:06,259 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1690570350] [2020-10-14 07:39:06,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:39:06,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:06,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:06,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:06,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:06,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:06,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:11,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:11,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-14 07:39:11,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 07:39:11,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 07:39:11,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:11,277 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:11,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 07:39:11,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 07:39:11,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 07:39:11,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:11,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:39:11,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:11,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:11,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:11,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:39:11,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:39:11,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:39:11,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:11,327 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:11,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:39:11,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:39:11,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:39:11,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:11,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-14 07:39:11,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:11,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:11,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:11,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:11,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-14 07:39:11,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:39:11,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-14 07:39:11,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:11,382 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:11,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:39:11,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-14 07:39:11,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:39:11,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:11,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-14 07:39:11,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:11,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:11,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:11,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:11,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-14 07:39:11,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:39:11,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-14 07:39:11,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:11,439 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:11,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:39:11,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-14 07:39:11,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:39:11,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:11,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-14 07:39:11,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:11,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:11,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:11,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:11,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-14 07:39:11,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:39:11,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-14 07:39:11,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:11,504 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:11,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:39:11,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-14 07:39:11,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:39:11,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:11,512 INFO L134 CoverageAnalysis]: Checked inductivity of 706 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 690 trivial. 0 not checked. [2020-10-14 07:39:11,512 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1690570350] [2020-10-14 07:39:11,513 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:39:11,513 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 07:39:11,513 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595117762] [2020-10-14 07:39:11,513 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 07:39:11,513 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:39:11,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 07:39:11,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 07:39:11,514 INFO L87 Difference]: Start difference. First operand 61 states and 71 transitions. Second operand 8 states. [2020-10-14 07:39:11,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:39:11,627 INFO L93 Difference]: Finished difference Result 110 states and 130 transitions. [2020-10-14 07:39:11,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 07:39:11,627 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 118 [2020-10-14 07:39:11,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:39:11,629 INFO L225 Difference]: With dead ends: 110 [2020-10-14 07:39:11,629 INFO L226 Difference]: Without dead ends: 64 [2020-10-14 07:39:11,630 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 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 07:39:11,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-14 07:39:11,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 63. [2020-10-14 07:39:11,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-14 07:39:11,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 73 transitions. [2020-10-14 07:39:11,636 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 73 transitions. Word has length 118 [2020-10-14 07:39:11,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:39:11,636 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 73 transitions. [2020-10-14 07:39:11,636 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 07:39:11,636 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 73 transitions. [2020-10-14 07:39:11,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-14 07:39:11,637 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:39:11,638 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 5, 5, 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] [2020-10-14 07:39:11,638 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 07:39:11,638 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:39:11,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:39:11,639 INFO L82 PathProgramCache]: Analyzing trace with hash -1400238191, now seen corresponding path program 12 times [2020-10-14 07:39:11,639 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:39:11,643 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [468925045] [2020-10-14 07:39:11,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:39:11,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:11,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:11,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:11,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:11,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:12,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:12,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:13,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:16,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:16,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 07:39:16,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 07:39:16,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 07:39:16,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:16,658 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:16,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 07:39:16,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 07:39:16,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 07:39:16,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:16,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:39:16,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:16,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:16,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:16,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:39:16,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:39:16,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:39:16,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:16,713 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:16,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:39:16,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:39:16,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:39:16,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:16,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-14 07:39:16,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:16,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:16,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:16,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:16,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-14 07:39:16,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:39:16,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-14 07:39:16,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:16,773 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:16,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:39:16,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-14 07:39:16,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:39:16,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:16,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-14 07:39:16,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:16,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:16,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:16,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:16,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-14 07:39:16,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:39:16,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-14 07:39:16,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:16,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:16,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:39:16,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-14 07:39:16,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:39:16,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:16,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-14 07:39:16,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:16,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:16,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:16,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:16,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-14 07:39:16,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:39:16,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-14 07:39:16,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:16,908 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:16,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:39:16,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-14 07:39:16,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:39:16,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:16,916 INFO L134 CoverageAnalysis]: Checked inductivity of 715 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 690 trivial. 0 not checked. [2020-10-14 07:39:16,917 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [468925045] [2020-10-14 07:39:16,917 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:39:16,917 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 07:39:16,917 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30207493] [2020-10-14 07:39:16,918 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 07:39:16,918 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:39:16,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 07:39:16,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-14 07:39:16,919 INFO L87 Difference]: Start difference. First operand 63 states and 73 transitions. Second operand 9 states. [2020-10-14 07:39:17,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:39:17,021 INFO L93 Difference]: Finished difference Result 112 states and 132 transitions. [2020-10-14 07:39:17,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 07:39:17,022 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 120 [2020-10-14 07:39:17,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:39:17,023 INFO L225 Difference]: With dead ends: 112 [2020-10-14 07:39:17,023 INFO L226 Difference]: Without dead ends: 66 [2020-10-14 07:39:17,024 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 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 07:39:17,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-14 07:39:17,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2020-10-14 07:39:17,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-14 07:39:17,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 75 transitions. [2020-10-14 07:39:17,031 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 75 transitions. Word has length 120 [2020-10-14 07:39:17,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:39:17,031 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 75 transitions. [2020-10-14 07:39:17,031 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 07:39:17,031 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 75 transitions. [2020-10-14 07:39:17,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-14 07:39:17,032 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:39:17,033 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 6, 6, 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] [2020-10-14 07:39:17,033 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 07:39:17,033 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:39:17,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:39:17,033 INFO L82 PathProgramCache]: Analyzing trace with hash -1089945901, now seen corresponding path program 13 times [2020-10-14 07:39:17,034 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:39:17,034 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1702315976] [2020-10-14 07:39:17,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:39:17,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:17,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:17,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:17,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:17,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:17,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:22,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:22,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-14 07:39:22,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 07:39:22,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-14 07:39:22,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:22,052 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:22,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 07:39:22,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-14 07:39:22,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 07:39:22,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:22,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:39:22,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:22,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:22,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:22,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:39:22,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:39:22,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:39:22,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:22,106 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:22,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:39:22,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:39:22,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:39:22,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:22,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-14 07:39:22,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:22,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:22,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:22,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:22,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-14 07:39:22,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:39:22,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-14 07:39:22,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:22,161 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:22,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:39:22,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:39:22,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:39:22,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:22,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-14 07:39:22,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:22,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:22,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:22,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:22,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-14 07:39:22,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:39:22,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-14 07:39:22,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:22,218 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:22,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:39:22,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:39:22,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:39:22,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:22,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-14 07:39:22,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:22,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:22,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:22,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:22,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-14 07:39:22,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:39:22,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-14 07:39:22,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:22,286 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:22,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:39:22,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-14 07:39:22,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:39:22,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:22,298 INFO L134 CoverageAnalysis]: Checked inductivity of 726 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 717 trivial. 0 not checked. [2020-10-14 07:39:22,298 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1702315976] [2020-10-14 07:39:22,298 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:39:22,299 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 07:39:22,299 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921866396] [2020-10-14 07:39:22,299 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 07:39:22,299 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:39:22,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 07:39:22,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-14 07:39:22,300 INFO L87 Difference]: Start difference. First operand 65 states and 75 transitions. Second operand 7 states. [2020-10-14 07:39:22,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:39:22,407 INFO L93 Difference]: Finished difference Result 103 states and 120 transitions. [2020-10-14 07:39:22,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 07:39:22,408 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 122 [2020-10-14 07:39:22,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:39:22,409 INFO L225 Difference]: With dead ends: 103 [2020-10-14 07:39:22,409 INFO L226 Difference]: Without dead ends: 68 [2020-10-14 07:39:22,410 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 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 07:39:22,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-14 07:39:22,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 67. [2020-10-14 07:39:22,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-14 07:39:22,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 77 transitions. [2020-10-14 07:39:22,415 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 77 transitions. Word has length 122 [2020-10-14 07:39:22,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:39:22,416 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 77 transitions. [2020-10-14 07:39:22,416 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 07:39:22,416 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 77 transitions. [2020-10-14 07:39:22,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-14 07:39:22,417 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:39:22,417 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 6, 6, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:39:22,418 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 07:39:22,418 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:39:22,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:39:22,418 INFO L82 PathProgramCache]: Analyzing trace with hash -119618639, now seen corresponding path program 14 times [2020-10-14 07:39:22,418 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:39:22,419 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [215533921] [2020-10-14 07:39:22,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:39:22,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:22,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:22,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:22,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:22,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:23,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:23,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:27,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:27,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-14 07:39:27,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 07:39:27,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 07:39:27,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:27,435 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:27,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 07:39:27,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-10-14 07:39:27,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 07:39:27,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:27,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:39:27,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:27,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:27,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:27,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:39:27,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:39:27,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:39:27,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:27,455 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:27,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:39:27,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:39:27,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:39:27,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:27,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-14 07:39:27,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:27,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:27,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:27,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:27,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-14 07:39:27,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:39:27,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-14 07:39:27,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:27,509 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:27,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:39:27,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:39:27,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:39:27,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:27,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-14 07:39:27,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:27,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:27,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:27,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-14 07:39:27,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:39:27,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-14 07:39:27,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:27,563 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:27,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 07:39:27,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 07:39:27,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 07:39:27,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:27,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-14 07:39:27,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:27,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:27,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:27,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:27,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-14 07:39:27,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:39:27,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-14 07:39:27,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:27,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:27,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:39:27,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-14 07:39:27,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:39:27,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:27,696 INFO L134 CoverageAnalysis]: Checked inductivity of 733 backedges. 160 proven. 226 refuted. 0 times theorem prover too weak. 347 trivial. 0 not checked. [2020-10-14 07:39:27,697 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [215533921] [2020-10-14 07:39:27,697 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:39:27,697 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 07:39:27,698 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445521463] [2020-10-14 07:39:27,698 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 07:39:27,699 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:39:27,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 07:39:27,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-14 07:39:27,699 INFO L87 Difference]: Start difference. First operand 67 states and 77 transitions. Second operand 10 states. [2020-10-14 07:39:27,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:39:27,975 INFO L93 Difference]: Finished difference Result 121 states and 145 transitions. [2020-10-14 07:39:27,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 07:39:27,975 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 124 [2020-10-14 07:39:27,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:39:27,976 INFO L225 Difference]: With dead ends: 121 [2020-10-14 07:39:27,977 INFO L226 Difference]: Without dead ends: 74 [2020-10-14 07:39:27,978 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=164, Unknown=0, NotChecked=0, Total=272 [2020-10-14 07:39:27,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-14 07:39:27,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 71. [2020-10-14 07:39:27,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-14 07:39:27,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 82 transitions. [2020-10-14 07:39:27,984 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 82 transitions. Word has length 124 [2020-10-14 07:39:27,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:39:27,984 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 82 transitions. [2020-10-14 07:39:27,984 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 07:39:27,984 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 82 transitions. [2020-10-14 07:39:27,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-10-14 07:39:27,985 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:39:27,985 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 21, 21, 6, 6, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:39:27,986 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 07:39:27,986 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:39:27,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:39:27,986 INFO L82 PathProgramCache]: Analyzing trace with hash 1186047052, now seen corresponding path program 15 times [2020-10-14 07:39:27,986 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:39:27,986 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1112289321] [2020-10-14 07:39:27,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:39:27,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:27,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:28,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:28,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:28,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:28,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:33,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:33,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-14 07:39:33,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 07:39:33,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 07:39:33,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:33,001 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:33,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 07:39:33,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 07:39:33,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 07:39:33,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:33,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:39:33,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:33,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:33,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:33,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:39:33,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:39:33,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:39:33,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:33,074 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:33,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:39:33,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:39:33,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:39:33,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:33,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-14 07:39:33,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:33,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:33,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:33,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:33,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-14 07:39:33,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:39:33,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-14 07:39:33,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:33,150 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:33,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:39:33,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-14 07:39:33,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:39:33,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:33,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-14 07:39:33,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:33,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:33,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:33,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:33,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-14 07:39:33,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:39:33,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-14 07:39:33,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:33,215 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:33,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:39:33,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-14 07:39:33,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:39:33,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:39:33,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-14 07:39:33,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:33,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:33,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:33,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:33,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-14 07:39:33,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:39:33,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-14 07:39:33,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:33,280 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:33,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:39:33,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-14 07:39:33,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:39:33,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:33,291 INFO L134 CoverageAnalysis]: Checked inductivity of 970 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 934 trivial. 0 not checked. [2020-10-14 07:39:33,292 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1112289321] [2020-10-14 07:39:33,292 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:39:33,292 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 07:39:33,292 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409237062] [2020-10-14 07:39:33,292 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 07:39:33,293 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:39:33,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 07:39:33,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-14 07:39:33,293 INFO L87 Difference]: Start difference. First operand 71 states and 82 transitions. Second operand 10 states. [2020-10-14 07:39:33,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:39:33,398 INFO L93 Difference]: Finished difference Result 126 states and 148 transitions. [2020-10-14 07:39:33,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 07:39:33,398 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 136 [2020-10-14 07:39:33,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:39:33,399 INFO L225 Difference]: With dead ends: 126 [2020-10-14 07:39:33,399 INFO L226 Difference]: Without dead ends: 74 [2020-10-14 07:39:33,400 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 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 07:39:33,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-14 07:39:33,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 73. [2020-10-14 07:39:33,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-14 07:39:33,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 84 transitions. [2020-10-14 07:39:33,405 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 84 transitions. Word has length 136 [2020-10-14 07:39:33,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:39:33,406 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 84 transitions. [2020-10-14 07:39:33,406 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 07:39:33,406 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 84 transitions. [2020-10-14 07:39:33,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-10-14 07:39:33,407 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:39:33,408 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 21, 21, 7, 7, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:39:33,408 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 07:39:33,408 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:39:33,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:39:33,408 INFO L82 PathProgramCache]: Analyzing trace with hash -2017620082, now seen corresponding path program 16 times [2020-10-14 07:39:33,409 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:39:33,409 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1993723130] [2020-10-14 07:39:33,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:39:33,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:33,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:33,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:33,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:33,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:33,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:38,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:38,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-14 07:39:38,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 07:39:38,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 07:39:38,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:38,422 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:38,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 07:39:38,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 100 [2020-10-14 07:39:38,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 07:39:38,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:38,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:39:38,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:38,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:38,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:38,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:39:38,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:39:38,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:39:38,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:38,469 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:38,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:39:38,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:39:38,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:39:38,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:38,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-14 07:39:38,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:38,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:38,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:38,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:38,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-14 07:39:38,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:39:38,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-14 07:39:38,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:38,544 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:38,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:39:38,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:39:38,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:39:38,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:38,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-14 07:39:38,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:38,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:38,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:38,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:38,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-14 07:39:38,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:39:38,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-14 07:39:38,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:38,616 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:38,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:39:38,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:39:38,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:39:38,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:38,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-14 07:39:38,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:38,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:38,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:38,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:38,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-14 07:39:38,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:39:38,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-14 07:39:38,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:38,678 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:38,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:39:38,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-14 07:39:38,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:39:38,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:38,689 INFO L134 CoverageAnalysis]: Checked inductivity of 983 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 967 trivial. 0 not checked. [2020-10-14 07:39:38,689 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1993723130] [2020-10-14 07:39:38,690 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:39:38,690 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 07:39:38,690 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877513161] [2020-10-14 07:39:38,690 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 07:39:38,690 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:39:38,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 07:39:38,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 07:39:38,691 INFO L87 Difference]: Start difference. First operand 73 states and 84 transitions. Second operand 8 states. [2020-10-14 07:39:38,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:39:38,804 INFO L93 Difference]: Finished difference Result 115 states and 134 transitions. [2020-10-14 07:39:38,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 07:39:38,807 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 138 [2020-10-14 07:39:38,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:39:38,808 INFO L225 Difference]: With dead ends: 115 [2020-10-14 07:39:38,809 INFO L226 Difference]: Without dead ends: 76 [2020-10-14 07:39:38,809 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 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 07:39:38,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-14 07:39:38,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 75. [2020-10-14 07:39:38,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-14 07:39:38,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 86 transitions. [2020-10-14 07:39:38,815 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 86 transitions. Word has length 138 [2020-10-14 07:39:38,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:39:38,816 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 86 transitions. [2020-10-14 07:39:38,816 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 07:39:38,816 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 86 transitions. [2020-10-14 07:39:38,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-10-14 07:39:38,817 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:39:38,818 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 21, 21, 7, 7, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:39:38,818 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-14 07:39:38,818 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:39:38,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:39:38,818 INFO L82 PathProgramCache]: Analyzing trace with hash -193358484, now seen corresponding path program 17 times [2020-10-14 07:39:38,819 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:39:38,819 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1267658665] [2020-10-14 07:39:38,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:39:38,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:38,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:38,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:38,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:38,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:38,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:43,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:43,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-14 07:39:43,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 07:39:43,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-14 07:39:43,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:43,845 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:43,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 07:39:43,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-14 07:39:43,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 07:39:43,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:43,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:39:43,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:43,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:43,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:43,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:39:43,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:39:43,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:39:43,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:43,867 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:43,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:39:43,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:39:43,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:39:43,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:43,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-14 07:39:43,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:43,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:43,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:43,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:43,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-14 07:39:43,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:39:43,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-14 07:39:43,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:43,933 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:43,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:39:43,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:39:43,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:39:43,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:43,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-14 07:39:43,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:43,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:43,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:43,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-14 07:39:43,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:39:43,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-14 07:39:43,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:43,996 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:43,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 07:39:43,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 07:39:43,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 07:39:43,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:44,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-14 07:39:44,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:44,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:44,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:44,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:44,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-14 07:39:44,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:39:44,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-14 07:39:44,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:44,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:44,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:39:44,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-14 07:39:44,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:39:44,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:44,163 INFO L134 CoverageAnalysis]: Checked inductivity of 992 backedges. 214 proven. 305 refuted. 0 times theorem prover too weak. 473 trivial. 0 not checked. [2020-10-14 07:39:44,163 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1267658665] [2020-10-14 07:39:44,164 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:39:44,164 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 07:39:44,164 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199467411] [2020-10-14 07:39:44,164 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 07:39:44,164 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:39:44,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 07:39:44,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-14 07:39:44,165 INFO L87 Difference]: Start difference. First operand 75 states and 86 transitions. Second operand 11 states. [2020-10-14 07:39:44,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:39:44,443 INFO L93 Difference]: Finished difference Result 135 states and 161 transitions. [2020-10-14 07:39:44,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 07:39:44,444 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 140 [2020-10-14 07:39:44,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:39:44,445 INFO L225 Difference]: With dead ends: 135 [2020-10-14 07:39:44,445 INFO L226 Difference]: Without dead ends: 82 [2020-10-14 07:39:44,446 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=135, Invalid=207, Unknown=0, NotChecked=0, Total=342 [2020-10-14 07:39:44,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-10-14 07:39:44,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 79. [2020-10-14 07:39:44,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-14 07:39:44,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 91 transitions. [2020-10-14 07:39:44,452 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 91 transitions. Word has length 140 [2020-10-14 07:39:44,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:39:44,452 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 91 transitions. [2020-10-14 07:39:44,452 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 07:39:44,452 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 91 transitions. [2020-10-14 07:39:44,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-14 07:39:44,454 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:39:44,454 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 24, 24, 7, 7, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:39:44,454 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-14 07:39:44,454 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:39:44,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:39:44,455 INFO L82 PathProgramCache]: Analyzing trace with hash 567942023, now seen corresponding path program 18 times [2020-10-14 07:39:44,455 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:39:44,455 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1116037433] [2020-10-14 07:39:44,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:39:44,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:44,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:44,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:44,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:44,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:44,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:49,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:49,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-14 07:39:49,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 07:39:49,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-14 07:39:49,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:49,486 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:49,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 07:39:49,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 07:39:49,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 07:39:49,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:49,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:39:49,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:49,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:49,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:49,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:39:49,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:39:49,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:39:49,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:49,569 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:49,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:39:49,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:39:49,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:39:49,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:49,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-14 07:39:49,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:49,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:49,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:49,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:49,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-14 07:39:49,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:39:49,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-14 07:39:49,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:49,661 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:49,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:39:49,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-14 07:39:49,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:39:49,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:49,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-14 07:39:49,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:49,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:49,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:49,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:49,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-14 07:39:49,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:39:49,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-14 07:39:49,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:49,759 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:49,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:39:49,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-14 07:39:49,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:39:49,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:49,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-14 07:39:49,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:49,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:49,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:49,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:49,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-14 07:39:49,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:39:49,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-14 07:39:49,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:49,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:49,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:39:49,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-14 07:39:49,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:39:49,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:49,868 INFO L134 CoverageAnalysis]: Checked inductivity of 1265 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 1216 trivial. 0 not checked. [2020-10-14 07:39:49,868 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1116037433] [2020-10-14 07:39:49,868 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:39:49,868 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 07:39:49,868 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839070452] [2020-10-14 07:39:49,869 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 07:39:49,869 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:39:49,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 07:39:49,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-14 07:39:49,870 INFO L87 Difference]: Start difference. First operand 79 states and 91 transitions. Second operand 11 states. [2020-10-14 07:39:50,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:39:50,001 INFO L93 Difference]: Finished difference Result 140 states and 164 transitions. [2020-10-14 07:39:50,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 07:39:50,003 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 152 [2020-10-14 07:39:50,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:39:50,004 INFO L225 Difference]: With dead ends: 140 [2020-10-14 07:39:50,004 INFO L226 Difference]: Without dead ends: 82 [2020-10-14 07:39:50,005 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 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 07:39:50,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-10-14 07:39:50,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 81. [2020-10-14 07:39:50,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-14 07:39:50,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 93 transitions. [2020-10-14 07:39:50,012 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 93 transitions. Word has length 152 [2020-10-14 07:39:50,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:39:50,012 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 93 transitions. [2020-10-14 07:39:50,012 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 07:39:50,012 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 93 transitions. [2020-10-14 07:39:50,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-10-14 07:39:50,014 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:39:50,014 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 24, 24, 8, 8, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:39:50,014 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-14 07:39:50,014 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:39:50,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:39:50,015 INFO L82 PathProgramCache]: Analyzing trace with hash -1485094199, now seen corresponding path program 19 times [2020-10-14 07:39:50,015 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:39:50,015 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1225584856] [2020-10-14 07:39:50,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:39:50,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:50,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:50,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:50,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:50,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:52,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:52,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:53,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:55,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:55,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-14 07:39:55,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 07:39:55,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-14 07:39:55,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:55,050 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:55,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 07:39:55,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-14 07:39:55,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 07:39:55,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:55,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:39:55,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:55,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:55,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:55,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:39:55,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:39:55,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:39:55,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:55,109 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:55,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:39:55,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:39:55,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:39:55,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:55,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 07:39:55,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:55,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:55,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:55,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:55,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-14 07:39:55,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:39:55,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-14 07:39:55,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:55,219 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:55,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:39:55,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:39:55,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:39:55,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:55,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-14 07:39:55,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:55,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:55,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:55,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:55,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-14 07:39:55,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:39:55,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-14 07:39:55,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:55,365 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:55,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:39:55,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:39:55,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:39:55,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:55,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-14 07:39:55,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:55,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:55,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:55,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:55,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-14 07:39:55,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:39:55,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-14 07:39:55,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:55,485 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:55,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:39:55,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-14 07:39:55,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:39:55,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:55,497 INFO L134 CoverageAnalysis]: Checked inductivity of 1280 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 1255 trivial. 0 not checked. [2020-10-14 07:39:55,497 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1225584856] [2020-10-14 07:39:55,497 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:39:55,497 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 07:39:55,498 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617093777] [2020-10-14 07:39:55,498 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 07:39:55,498 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:39:55,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 07:39:55,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-14 07:39:55,499 INFO L87 Difference]: Start difference. First operand 81 states and 93 transitions. Second operand 9 states. [2020-10-14 07:39:55,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:39:55,623 INFO L93 Difference]: Finished difference Result 127 states and 148 transitions. [2020-10-14 07:39:55,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 07:39:55,623 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 154 [2020-10-14 07:39:55,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:39:55,625 INFO L225 Difference]: With dead ends: 127 [2020-10-14 07:39:55,625 INFO L226 Difference]: Without dead ends: 84 [2020-10-14 07:39:55,626 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 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 07:39:55,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-14 07:39:55,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 83. [2020-10-14 07:39:55,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-14 07:39:55,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 95 transitions. [2020-10-14 07:39:55,631 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 95 transitions. Word has length 154 [2020-10-14 07:39:55,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:39:55,631 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 95 transitions. [2020-10-14 07:39:55,631 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 07:39:55,631 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 95 transitions. [2020-10-14 07:39:55,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-10-14 07:39:55,632 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:39:55,632 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 24, 24, 8, 8, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:39:55,632 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-14 07:39:55,633 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:39:55,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:39:55,633 INFO L82 PathProgramCache]: Analyzing trace with hash 531024295, now seen corresponding path program 20 times [2020-10-14 07:39:55,633 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:39:55,633 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2044152627] [2020-10-14 07:39:55,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:39:55,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:55,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:55,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:55,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:55,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:56,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:00,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:40:00,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-10-14 07:40:00,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 07:40:00,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-14 07:40:00,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:40:00,660 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:40:00,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 07:40:00,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-14 07:40:00,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-14 07:40:00,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:40:00,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:40:00,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:40:00,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:00,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:40:00,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:40:00,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:40:00,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 07:40:00,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:40:00,686 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:40:00,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:40:00,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:40:00,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:40:00,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:40:00,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 07:40:00,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:40:00,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:00,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:00,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:40:00,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-14 07:40:00,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:40:00,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-14 07:40:00,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:40:00,818 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:40:00,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:40:00,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:40:00,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:40:00,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:40:00,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-14 07:40:00,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:40:00,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:00,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:40:00,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-14 07:40:00,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:40:00,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-14 07:40:00,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:40:00,891 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:40:00,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 07:40:00,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 07:40:00,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-14 07:40:00,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:40:00,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-10-14 07:40:00,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:40:00,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:00,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:01,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:40:01,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-14 07:40:01,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:40:01,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-14 07:40:01,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:40:01,063 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:40:01,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:40:01,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-14 07:40:01,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:40:01,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:40:01,077 INFO L134 CoverageAnalysis]: Checked inductivity of 1291 backedges. 276 proven. 396 refuted. 0 times theorem prover too weak. 619 trivial. 0 not checked. [2020-10-14 07:40:01,077 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2044152627] [2020-10-14 07:40:01,077 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:40:01,077 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 07:40:01,078 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29013875] [2020-10-14 07:40:01,078 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 07:40:01,078 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:40:01,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 07:40:01,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-14 07:40:01,079 INFO L87 Difference]: Start difference. First operand 83 states and 95 transitions. Second operand 12 states. [2020-10-14 07:40:01,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:40:01,385 INFO L93 Difference]: Finished difference Result 149 states and 177 transitions. [2020-10-14 07:40:01,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 07:40:01,386 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 156 [2020-10-14 07:40:01,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:40:01,387 INFO L225 Difference]: With dead ends: 149 [2020-10-14 07:40:01,387 INFO L226 Difference]: Without dead ends: 90 [2020-10-14 07:40:01,388 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=165, Invalid=255, Unknown=0, NotChecked=0, Total=420 [2020-10-14 07:40:01,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-10-14 07:40:01,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 87. [2020-10-14 07:40:01,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-10-14 07:40:01,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 100 transitions. [2020-10-14 07:40:01,395 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 100 transitions. Word has length 156 [2020-10-14 07:40:01,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:40:01,395 INFO L479 AbstractCegarLoop]: Abstraction has 87 states and 100 transitions. [2020-10-14 07:40:01,395 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 07:40:01,395 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 100 transitions. [2020-10-14 07:40:01,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-10-14 07:40:01,397 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:40:01,397 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 27, 27, 8, 8, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:40:01,397 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-14 07:40:01,397 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:40:01,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:40:01,398 INFO L82 PathProgramCache]: Analyzing trace with hash -716294846, now seen corresponding path program 21 times [2020-10-14 07:40:01,398 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:40:01,398 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [98992213] [2020-10-14 07:40:01,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:40:01,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:40:01,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:01,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:01,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:01,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:01,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:06,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:40:06,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-14 07:40:06,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 07:40:06,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-14 07:40:06,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:40:06,422 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:40:06,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 07:40:06,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-14 07:40:06,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-14 07:40:06,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:40:06,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:40:06,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:40:06,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:06,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:40:06,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:40:06,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:40:06,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:40:06,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:40:06,440 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:40:06,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:40:06,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:40:06,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:40:06,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:40:06,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 07:40:06,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:40:06,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:06,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:40:06,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-14 07:40:06,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:40:06,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-14 07:40:06,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:40:06,524 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:40:06,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 07:40:06,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 07:40:06,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-14 07:40:06,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:40:06,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-14 07:40:06,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:40:06,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:06,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:06,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:40:06,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-14 07:40:06,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:40:06,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-14 07:40:06,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:40:06,732 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:40:06,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:40:06,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-14 07:40:06,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:40:06,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:40:06,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-14 07:40:06,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:40:06,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:06,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:06,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:40:06,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-14 07:40:06,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:40:06,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-14 07:40:06,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:40:06,834 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:40:06,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:40:06,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-14 07:40:06,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:40:06,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:40:06,850 INFO L134 CoverageAnalysis]: Checked inductivity of 1600 backedges. 0 proven. 845 refuted. 0 times theorem prover too weak. 755 trivial. 0 not checked. [2020-10-14 07:40:06,850 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [98992213] [2020-10-14 07:40:06,850 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:40:06,850 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 07:40:06,850 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045289775] [2020-10-14 07:40:06,851 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 07:40:06,851 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:40:06,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 07:40:06,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-14 07:40:06,851 INFO L87 Difference]: Start difference. First operand 87 states and 100 transitions. Second operand 13 states. [2020-10-14 07:40:07,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:40:07,226 INFO L93 Difference]: Finished difference Result 157 states and 187 transitions. [2020-10-14 07:40:07,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 07:40:07,226 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 168 [2020-10-14 07:40:07,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:40:07,228 INFO L225 Difference]: With dead ends: 157 [2020-10-14 07:40:07,228 INFO L226 Difference]: Without dead ends: 94 [2020-10-14 07:40:07,230 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=198, Invalid=308, Unknown=0, NotChecked=0, Total=506 [2020-10-14 07:40:07,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-10-14 07:40:07,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 91. [2020-10-14 07:40:07,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-14 07:40:07,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 105 transitions. [2020-10-14 07:40:07,238 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 105 transitions. Word has length 168 [2020-10-14 07:40:07,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:40:07,239 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 105 transitions. [2020-10-14 07:40:07,239 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 07:40:07,239 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 105 transitions. [2020-10-14 07:40:07,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-10-14 07:40:07,241 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:40:07,241 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 30, 30, 8, 8, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:40:07,242 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-14 07:40:07,242 INFO L427 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:40:07,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:40:07,243 INFO L82 PathProgramCache]: Analyzing trace with hash -1548971939, now seen corresponding path program 22 times [2020-10-14 07:40:07,243 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:40:07,243 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [180900623] [2020-10-14 07:40:07,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:40:07,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:40:07,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:07,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:07,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:07,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:07,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:12,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:40:12,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-10-14 07:40:12,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 07:40:12,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-14 07:40:12,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:40:12,278 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:40:12,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 07:40:12,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 07:40:12,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 07:40:12,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:40:12,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:40:12,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:40:12,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:12,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:40:12,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:40:12,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:40:12,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:40:12,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:40:12,366 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:40:12,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:40:12,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:40:12,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:40:12,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:40:12,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 07:40:12,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:40:12,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:12,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:12,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:40:12,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-14 07:40:12,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:40:12,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-14 07:40:12,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:40:12,491 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:40:12,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:40:12,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-14 07:40:12,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:40:12,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:40:12,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-14 07:40:12,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:40:12,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:12,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:12,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:40:12,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-14 07:40:12,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:40:12,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-14 07:40:12,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:40:12,614 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:40:12,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:40:12,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-14 07:40:12,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:40:12,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:40:12,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-14 07:40:12,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:40:12,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:12,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:12,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:40:12,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-14 07:40:12,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:40:12,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-14 07:40:12,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:40:12,732 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:40:12,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:40:12,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-14 07:40:12,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:40:12,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:40:12,748 INFO L134 CoverageAnalysis]: Checked inductivity of 1945 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 1881 trivial. 0 not checked. [2020-10-14 07:40:12,748 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [180900623] [2020-10-14 07:40:12,748 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:40:12,749 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 07:40:12,749 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738818271] [2020-10-14 07:40:12,749 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 07:40:12,749 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:40:12,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 07:40:12,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-14 07:40:12,750 INFO L87 Difference]: Start difference. First operand 91 states and 105 transitions. Second operand 12 states. [2020-10-14 07:40:12,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:40:12,876 INFO L93 Difference]: Finished difference Result 162 states and 190 transitions. [2020-10-14 07:40:12,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 07:40:12,877 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 180 [2020-10-14 07:40:12,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:40:12,878 INFO L225 Difference]: With dead ends: 162 [2020-10-14 07:40:12,878 INFO L226 Difference]: Without dead ends: 94 [2020-10-14 07:40:12,879 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 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 07:40:12,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-10-14 07:40:12,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 93. [2020-10-14 07:40:12,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-10-14 07:40:12,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 107 transitions. [2020-10-14 07:40:12,890 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 107 transitions. Word has length 180 [2020-10-14 07:40:12,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:40:12,891 INFO L479 AbstractCegarLoop]: Abstraction has 93 states and 107 transitions. [2020-10-14 07:40:12,891 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 07:40:12,891 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 107 transitions. [2020-10-14 07:40:12,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-10-14 07:40:12,892 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:40:12,893 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 30, 30, 9, 9, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:40:12,893 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-14 07:40:12,893 INFO L427 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:40:12,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:40:12,894 INFO L82 PathProgramCache]: Analyzing trace with hash 808853663, now seen corresponding path program 23 times [2020-10-14 07:40:12,894 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:40:12,894 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [100914370] [2020-10-14 07:40:12,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:40:12,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:40:12,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:12,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:13,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:13,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:13,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:17,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:40:17,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-14 07:40:17,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 07:40:17,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-14 07:40:17,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:40:17,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:40:17,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 07:40:17,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 07:40:17,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 07:40:17,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:40:18,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:40:18,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:40:18,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:18,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:40:18,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:40:18,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:40:18,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:40:18,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:40:18,045 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:40:18,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:40:18,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:40:18,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:40:18,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:40:18,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-14 07:40:18,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:40:18,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:18,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:18,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:40:18,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-14 07:40:18,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:40:18,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-14 07:40:18,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:40:18,162 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:40:18,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:40:18,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-14 07:40:18,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:40:18,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:40:18,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-14 07:40:18,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:40:18,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:18,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:18,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:40:18,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-14 07:40:18,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:40:18,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-14 07:40:18,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:40:18,283 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:40:18,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:40:18,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-14 07:40:18,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:40:18,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:40:18,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-14 07:40:18,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:40:18,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:18,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:18,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:40:18,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-14 07:40:18,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:40:18,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-14 07:40:18,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:40:18,408 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:40:18,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:40:18,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-14 07:40:18,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:40:18,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:40:18,430 INFO L134 CoverageAnalysis]: Checked inductivity of 1962 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 1881 trivial. 0 not checked. [2020-10-14 07:40:18,431 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [100914370] [2020-10-14 07:40:18,431 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:40:18,431 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 07:40:18,431 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691496880] [2020-10-14 07:40:18,432 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 07:40:18,432 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:40:18,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 07:40:18,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-14 07:40:18,432 INFO L87 Difference]: Start difference. First operand 93 states and 107 transitions. Second operand 13 states. [2020-10-14 07:40:18,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:40:18,581 INFO L93 Difference]: Finished difference Result 164 states and 192 transitions. [2020-10-14 07:40:18,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 07:40:18,582 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 182 [2020-10-14 07:40:18,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:40:18,583 INFO L225 Difference]: With dead ends: 164 [2020-10-14 07:40:18,583 INFO L226 Difference]: Without dead ends: 96 [2020-10-14 07:40:18,585 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-14 07:40:18,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-14 07:40:18,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 95. [2020-10-14 07:40:18,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-10-14 07:40:18,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 109 transitions. [2020-10-14 07:40:18,591 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 109 transitions. Word has length 182 [2020-10-14 07:40:18,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:40:18,591 INFO L479 AbstractCegarLoop]: Abstraction has 95 states and 109 transitions. [2020-10-14 07:40:18,591 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 07:40:18,591 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 109 transitions. [2020-10-14 07:40:18,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-10-14 07:40:18,593 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:40:18,593 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 30, 30, 10, 10, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:40:18,593 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-14 07:40:18,593 INFO L427 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:40:18,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:40:18,594 INFO L82 PathProgramCache]: Analyzing trace with hash -1063475103, now seen corresponding path program 24 times [2020-10-14 07:40:18,594 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:40:18,594 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [493860861] [2020-10-14 07:40:18,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:40:18,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:40:18,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:18,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:18,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:18,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:22,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:23,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:40:23,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-14 07:40:23,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 07:40:23,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-14 07:40:23,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:40:23,637 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:40:23,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 07:40:23,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 130 [2020-10-14 07:40:23,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 07:40:23,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:40:23,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:40:23,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:40:23,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:23,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:40:23,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:40:23,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:40:23,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:40:23,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:40:23,704 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:40:23,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:40:23,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:40:23,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:40:23,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:40:23,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 07:40:23,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:40:23,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:23,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:23,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:40:23,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-14 07:40:23,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:40:23,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-14 07:40:23,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:40:23,820 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:40:23,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:40:23,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:40:23,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:40:23,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:40:23,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-14 07:40:23,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:40:23,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:23,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:23,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:40:23,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-14 07:40:23,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:40:23,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-14 07:40:23,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:40:23,938 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:40:23,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:40:23,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:40:23,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:40:23,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:40:23,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-14 07:40:23,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:40:23,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:23,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:24,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:40:24,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-14 07:40:24,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:40:24,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-14 07:40:24,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:40:24,060 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:40:24,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:40:24,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-14 07:40:24,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:40:24,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:40:24,077 INFO L134 CoverageAnalysis]: Checked inductivity of 1981 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 1945 trivial. 0 not checked. [2020-10-14 07:40:24,078 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [493860861] [2020-10-14 07:40:24,078 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:40:24,078 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 07:40:24,078 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56586659] [2020-10-14 07:40:24,079 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 07:40:24,079 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:40:24,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 07:40:24,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-14 07:40:24,079 INFO L87 Difference]: Start difference. First operand 95 states and 109 transitions. Second operand 10 states. [2020-10-14 07:40:24,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:40:24,203 INFO L93 Difference]: Finished difference Result 149 states and 174 transitions. [2020-10-14 07:40:24,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 07:40:24,204 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 184 [2020-10-14 07:40:24,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:40:24,205 INFO L225 Difference]: With dead ends: 149 [2020-10-14 07:40:24,205 INFO L226 Difference]: Without dead ends: 98 [2020-10-14 07:40:24,206 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 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 07:40:24,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-14 07:40:24,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 97. [2020-10-14 07:40:24,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-14 07:40:24,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 111 transitions. [2020-10-14 07:40:24,212 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 111 transitions. Word has length 184 [2020-10-14 07:40:24,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:40:24,213 INFO L479 AbstractCegarLoop]: Abstraction has 97 states and 111 transitions. [2020-10-14 07:40:24,213 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 07:40:24,213 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 111 transitions. [2020-10-14 07:40:24,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2020-10-14 07:40:24,214 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:40:24,215 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 30, 30, 10, 10, 7, 7, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:40:24,215 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-14 07:40:24,215 INFO L427 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:40:24,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:40:24,215 INFO L82 PathProgramCache]: Analyzing trace with hash -2020847425, now seen corresponding path program 25 times [2020-10-14 07:40:24,215 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:40:24,216 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [844910859] [2020-10-14 07:40:24,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:40:24,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:40:24,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:24,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:24,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:24,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:28,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:29,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:40:29,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 198 [2020-10-14 07:40:29,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 07:40:29,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-14 07:40:29,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:40:29,252 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:40:29,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 07:40:29,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-14 07:40:29,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-14 07:40:29,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:40:29,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:40:29,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:40:29,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:29,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:40:29,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:40:29,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:40:29,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:40:29,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:40:29,272 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:40:29,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:40:29,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:40:29,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:40:29,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:40:29,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 07:40:29,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:40:29,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:29,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:40:29,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-14 07:40:29,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:40:29,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-14 07:40:29,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:40:29,365 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:40:29,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 07:40:29,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 07:40:29,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-14 07:40:29,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:40:29,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-14 07:40:29,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:40:29,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:29,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:29,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:40:29,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-14 07:40:29,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:40:29,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-14 07:40:29,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:40:29,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:40:29,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:40:29,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-14 07:40:29,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:40:29,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:40:29,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-14 07:40:29,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:40:29,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:29,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:29,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:40:29,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-14 07:40:29,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:40:29,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-14 07:40:29,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:40:29,715 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:40:29,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:40:29,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-14 07:40:29,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:40:29,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:40:29,733 INFO L134 CoverageAnalysis]: Checked inductivity of 1994 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 956 trivial. 0 not checked. [2020-10-14 07:40:29,733 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [844910859] [2020-10-14 07:40:29,733 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:40:29,733 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 07:40:29,733 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019209688] [2020-10-14 07:40:29,734 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 07:40:29,734 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:40:29,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 07:40:29,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-14 07:40:29,735 INFO L87 Difference]: Start difference. First operand 97 states and 111 transitions. Second operand 14 states. [2020-10-14 07:40:30,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:40:30,105 INFO L93 Difference]: Finished difference Result 173 states and 205 transitions. [2020-10-14 07:40:30,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 07:40:30,105 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 186 [2020-10-14 07:40:30,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:40:30,106 INFO L225 Difference]: With dead ends: 173 [2020-10-14 07:40:30,106 INFO L226 Difference]: Without dead ends: 104 [2020-10-14 07:40:30,108 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=234, Invalid=366, Unknown=0, NotChecked=0, Total=600 [2020-10-14 07:40:30,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-14 07:40:30,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 101. [2020-10-14 07:40:30,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-14 07:40:30,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 116 transitions. [2020-10-14 07:40:30,115 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 116 transitions. Word has length 186 [2020-10-14 07:40:30,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:40:30,115 INFO L479 AbstractCegarLoop]: Abstraction has 101 states and 116 transitions. [2020-10-14 07:40:30,115 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 07:40:30,115 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 116 transitions. [2020-10-14 07:40:30,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2020-10-14 07:40:30,117 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:40:30,117 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 33, 33, 10, 10, 7, 7, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:40:30,117 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-14 07:40:30,117 INFO L427 AbstractCegarLoop]: === Iteration 30 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:40:30,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:40:30,118 INFO L82 PathProgramCache]: Analyzing trace with hash 1873444442, now seen corresponding path program 26 times [2020-10-14 07:40:30,118 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:40:30,118 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [713302197] [2020-10-14 07:40:30,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:40:30,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:40:30,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:30,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:30,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:30,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:34,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:35,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:40:35,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 210 [2020-10-14 07:40:35,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 07:40:35,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 07:40:35,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:40:35,136 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:40:35,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 07:40:35,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 07:40:35,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 07:40:35,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:40:35,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:40:35,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:40:35,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:35,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:40:35,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:40:35,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:40:35,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:40:35,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:40:35,255 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:40:35,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:40:35,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:40:35,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:40:35,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:40:35,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 07:40:35,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:40:35,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:35,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:35,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:40:35,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-14 07:40:35,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:40:35,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-10-14 07:40:35,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:40:35,409 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:40:35,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:40:35,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-10-14 07:40:35,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:40:35,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:40:35,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-14 07:40:35,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:40:35,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:35,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:35,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:40:35,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-14 07:40:35,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:40:35,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-14 07:40:35,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:40:35,554 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:40:35,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:40:35,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-10-14 07:40:35,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:40:35,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:40:35,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-10-14 07:40:35,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:40:35,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:35,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:35,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:40:35,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-14 07:40:35,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:40:35,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-10-14 07:40:35,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:40:35,702 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:40:35,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:40:35,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-10-14 07:40:35,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:40:35,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:40:35,720 INFO L134 CoverageAnalysis]: Checked inductivity of 2375 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 2275 trivial. 0 not checked. [2020-10-14 07:40:35,721 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [713302197] [2020-10-14 07:40:35,721 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:40:35,721 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 07:40:35,721 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891751355] [2020-10-14 07:40:35,722 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 07:40:35,722 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:40:35,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 07:40:35,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-14 07:40:35,723 INFO L87 Difference]: Start difference. First operand 101 states and 116 transitions. Second operand 14 states. [2020-10-14 07:40:35,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:40:35,847 INFO L93 Difference]: Finished difference Result 178 states and 208 transitions. [2020-10-14 07:40:35,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 07:40:35,847 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 198 [2020-10-14 07:40:35,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:40:35,849 INFO L225 Difference]: With dead ends: 178 [2020-10-14 07:40:35,849 INFO L226 Difference]: Without dead ends: 104 [2020-10-14 07:40:35,849 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 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 07:40:35,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-14 07:40:35,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 103. [2020-10-14 07:40:35,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-14 07:40:35,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 118 transitions. [2020-10-14 07:40:35,858 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 118 transitions. Word has length 198 [2020-10-14 07:40:35,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:40:35,858 INFO L479 AbstractCegarLoop]: Abstraction has 103 states and 118 transitions. [2020-10-14 07:40:35,858 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 07:40:35,859 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 118 transitions. [2020-10-14 07:40:35,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-10-14 07:40:35,860 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:40:35,860 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 33, 33, 11, 11, 7, 7, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:40:35,860 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-14 07:40:35,860 INFO L427 AbstractCegarLoop]: === Iteration 31 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:40:35,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:40:35,861 INFO L82 PathProgramCache]: Analyzing trace with hash 685589020, now seen corresponding path program 27 times [2020-10-14 07:40:35,861 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:40:35,861 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [927853454] [2020-10-14 07:40:35,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:40:35,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:40:35,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:35,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:35,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:35,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:35,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:40,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:40:40,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 212 [2020-10-14 07:40:40,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 07:40:40,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-14 07:40:40,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:40:40,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:40:40,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 07:40:40,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-14 07:40:40,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 07:40:40,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:40:40,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:40:40,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:40:40,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:40,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:40:40,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:40:40,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:40:40,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:40:40,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:40:40,987 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:40:40,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:40:40,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:40:40,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:40:40,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:40:40,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 07:40:40,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:40:40,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:40,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:41,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:40:41,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-14 07:40:41,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:40:41,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-10-14 07:40:41,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:40:41,158 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:40:41,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:40:41,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:40:41,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:40:41,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:40:41,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-14 07:40:41,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:40:41,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:41,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:41,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:40:41,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-14 07:40:41,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:40:41,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-14 07:40:41,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:40:41,307 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:40:41,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:40:41,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:40:41,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:40:41,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:40:41,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-10-14 07:40:41,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:40:41,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:41,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:41,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:40:41,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-14 07:40:41,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:40:41,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-14 07:40:41,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:40:41,463 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:40:41,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:40:41,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-10-14 07:40:41,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:40:41,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:40:41,483 INFO L134 CoverageAnalysis]: Checked inductivity of 2396 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 2347 trivial. 0 not checked. [2020-10-14 07:40:41,483 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [927853454] [2020-10-14 07:40:41,483 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:40:41,483 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 07:40:41,483 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945999490] [2020-10-14 07:40:41,484 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 07:40:41,484 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:40:41,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 07:40:41,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-14 07:40:41,485 INFO L87 Difference]: Start difference. First operand 103 states and 118 transitions. Second operand 11 states. [2020-10-14 07:40:41,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:40:41,627 INFO L93 Difference]: Finished difference Result 161 states and 188 transitions. [2020-10-14 07:40:41,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 07:40:41,628 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 200 [2020-10-14 07:40:41,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:40:41,629 INFO L225 Difference]: With dead ends: 161 [2020-10-14 07:40:41,629 INFO L226 Difference]: Without dead ends: 106 [2020-10-14 07:40:41,630 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 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 07:40:41,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-10-14 07:40:41,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 105. [2020-10-14 07:40:41,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-10-14 07:40:41,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 120 transitions. [2020-10-14 07:40:41,636 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 120 transitions. Word has length 200 [2020-10-14 07:40:41,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:40:41,636 INFO L479 AbstractCegarLoop]: Abstraction has 105 states and 120 transitions. [2020-10-14 07:40:41,637 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 07:40:41,637 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 120 transitions. [2020-10-14 07:40:41,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2020-10-14 07:40:41,638 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:40:41,638 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 33, 33, 11, 11, 8, 8, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:40:41,638 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-14 07:40:41,639 INFO L427 AbstractCegarLoop]: === Iteration 32 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:40:41,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:40:41,639 INFO L82 PathProgramCache]: Analyzing trace with hash -714790022, now seen corresponding path program 28 times [2020-10-14 07:40:41,639 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:40:41,639 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1906704913] [2020-10-14 07:40:41,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:40:41,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:40:41,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:41,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:41,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:41,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:46,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:40:46,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-10-14 07:40:46,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:40:46,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5048 [2020-10-14 07:40:46,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:40:46,705 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:40:46,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 07:40:46,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-14 07:40:46,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-14 07:40:46,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:40:46,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:40:46,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:40:46,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:46,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:40:46,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:40:46,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:40:46,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:40:46,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:40:46,778 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:40:46,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:40:46,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:40:46,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:40:46,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:40:46,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 07:40:46,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:40:46,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:46,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:47,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:40:47,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-14 07:40:47,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:40:47,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 529 [2020-10-14 07:40:47,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:40:47,317 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:40:47,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 07:40:47,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:40:47,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-14 07:40:47,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:40:47,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-14 07:40:47,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:40:47,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:47,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:48,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:40:48,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-14 07:40:48,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:40:48,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 762 [2020-10-14 07:40:48,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:40:48,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:40:48,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 07:40:48,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 07:40:48,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-14 07:40:48,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:40:48,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-14 07:40:48,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:40:48,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:48,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:48,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:40:48,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-14 07:40:48,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:40:48,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 208 [2020-10-14 07:40:48,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:40:48,557 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:40:48,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:40:48,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-10-14 07:40:48,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:40:48,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:40:48,618 INFO L134 CoverageAnalysis]: Checked inductivity of 2411 backedges. 0 proven. 1260 refuted. 0 times theorem prover too weak. 1151 trivial. 0 not checked. [2020-10-14 07:40:48,618 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1906704913] [2020-10-14 07:40:48,618 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:40:48,618 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 07:40:48,619 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087127497] [2020-10-14 07:40:48,619 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 07:40:48,619 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:40:48,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 07:40:48,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-14 07:40:48,619 INFO L87 Difference]: Start difference. First operand 105 states and 120 transitions. Second operand 11 states. [2020-10-14 07:40:49,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:40:49,077 INFO L93 Difference]: Finished difference Result 235 states and 276 transitions. [2020-10-14 07:40:49,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 07:40:49,078 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 202 [2020-10-14 07:40:49,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:40:49,079 INFO L225 Difference]: With dead ends: 235 [2020-10-14 07:40:49,079 INFO L226 Difference]: Without dead ends: 162 [2020-10-14 07:40:49,080 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2020-10-14 07:40:49,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-10-14 07:40:49,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 153. [2020-10-14 07:40:49,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-10-14 07:40:49,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 182 transitions. [2020-10-14 07:40:49,097 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 182 transitions. Word has length 202 [2020-10-14 07:40:49,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:40:49,098 INFO L479 AbstractCegarLoop]: Abstraction has 153 states and 182 transitions. [2020-10-14 07:40:49,098 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 07:40:49,098 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 182 transitions. [2020-10-14 07:40:49,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2020-10-14 07:40:49,100 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:40:49,100 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 33, 32, 11, 11, 8, 8, 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] [2020-10-14 07:40:49,100 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-14 07:40:49,100 INFO L427 AbstractCegarLoop]: === Iteration 33 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:40:49,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:40:49,101 INFO L82 PathProgramCache]: Analyzing trace with hash 1214142204, now seen corresponding path program 1 times [2020-10-14 07:40:49,101 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:40:49,101 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1359531688] [2020-10-14 07:40:49,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:40:49,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:40:49,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:49,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:49,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:49,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:50,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:53,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:54,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:40:54,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-10-14 07:40:54,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 07:40:54,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 07:40:54,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:40:54,123 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:40:54,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 07:40:54,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-14 07:40:54,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-14 07:40:54,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:40:54,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:40:54,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:40:54,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:54,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:40:54,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:40:54,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:40:54,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 07:40:54,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:40:54,144 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:40:54,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:40:54,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:40:54,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:40:54,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:40:54,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 07:40:54,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:40:54,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:54,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:40:54,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-14 07:40:54,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:40:54,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-14 07:40:54,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:40:54,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:40:54,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 07:40:54,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 07:40:54,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-14 07:40:54,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:40:54,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-14 07:40:54,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:40:54,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:54,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:54,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:40:54,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-14 07:40:54,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:40:54,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-14 07:40:54,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:40:54,525 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:40:54,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:40:54,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-10-14 07:40:54,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:40:54,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:40:54,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-14 07:40:54,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:40:54,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:54,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:54,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:40:54,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-14 07:40:54,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:40:54,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 177 [2020-10-14 07:40:54,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:40:54,715 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:40:54,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:40:54,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-10-14 07:40:54,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:40:54,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:40:54,739 INFO L134 CoverageAnalysis]: Checked inductivity of 2411 backedges. 0 proven. 1251 refuted. 0 times theorem prover too weak. 1160 trivial. 0 not checked. [2020-10-14 07:40:54,740 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1359531688] [2020-10-14 07:40:54,740 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:40:54,740 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 07:40:54,740 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149943963] [2020-10-14 07:40:54,741 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 07:40:54,741 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:40:54,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 07:40:54,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-14 07:40:54,742 INFO L87 Difference]: Start difference. First operand 153 states and 182 transitions. Second operand 15 states. [2020-10-14 07:40:55,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:40:55,145 INFO L93 Difference]: Finished difference Result 290 states and 358 transitions. [2020-10-14 07:40:55,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 07:40:55,145 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 202 [2020-10-14 07:40:55,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:40:55,149 INFO L225 Difference]: With dead ends: 290 [2020-10-14 07:40:55,149 INFO L226 Difference]: Without dead ends: 167 [2020-10-14 07:40:55,151 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=273, Invalid=429, Unknown=0, NotChecked=0, Total=702 [2020-10-14 07:40:55,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2020-10-14 07:40:55,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 161. [2020-10-14 07:40:55,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-10-14 07:40:55,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 192 transitions. [2020-10-14 07:40:55,164 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 192 transitions. Word has length 202 [2020-10-14 07:40:55,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:40:55,164 INFO L479 AbstractCegarLoop]: Abstraction has 161 states and 192 transitions. [2020-10-14 07:40:55,164 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 07:40:55,164 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 192 transitions. [2020-10-14 07:40:55,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2020-10-14 07:40:55,166 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:40:55,166 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 36, 35, 11, 11, 8, 8, 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] [2020-10-14 07:40:55,166 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-14 07:40:55,167 INFO L427 AbstractCegarLoop]: === Iteration 34 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:40:55,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:40:55,167 INFO L82 PathProgramCache]: Analyzing trace with hash -1029715945, now seen corresponding path program 2 times [2020-10-14 07:40:55,167 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:40:55,167 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1694004031] [2020-10-14 07:40:55,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:40:55,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:40:55,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:55,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:55,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:55,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:00,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:00,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-14 07:41:00,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:41:00,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5056 [2020-10-14 07:41:00,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:00,241 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:00,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 07:41:00,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-14 07:41:00,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-14 07:41:00,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:41:00,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:41:00,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:00,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:00,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:00,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:41:00,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:41:00,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:41:00,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:00,259 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:00,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:41:00,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:41:00,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:41:00,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:41:00,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 07:41:00,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:00,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:00,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:00,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-14 07:41:00,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:41:00,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-14 07:41:00,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:00,389 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:00,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 07:41:00,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 07:41:00,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-14 07:41:00,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:41:00,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-14 07:41:00,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:00,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:00,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:00,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:00,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-14 07:41:00,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:41:00,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-10-14 07:41:00,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:00,701 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:00,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:41:00,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-14 07:41:00,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:41:00,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:41:00,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-14 07:41:00,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:00,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:00,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:00,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:00,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-14 07:41:00,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:41:00,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-10-14 07:41:00,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:00,868 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:00,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:41:00,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-14 07:41:00,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:41:00,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:41:00,892 INFO L134 CoverageAnalysis]: Checked inductivity of 2828 backedges. 0 proven. 1484 refuted. 0 times theorem prover too weak. 1344 trivial. 0 not checked. [2020-10-14 07:41:00,892 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1694004031] [2020-10-14 07:41:00,892 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:41:00,892 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 07:41:00,893 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537236205] [2020-10-14 07:41:00,893 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 07:41:00,893 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:41:00,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 07:41:00,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-14 07:41:00,894 INFO L87 Difference]: Start difference. First operand 161 states and 192 transitions. Second operand 16 states. [2020-10-14 07:41:01,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:41:01,356 INFO L93 Difference]: Finished difference Result 306 states and 378 transitions. [2020-10-14 07:41:01,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 07:41:01,356 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 214 [2020-10-14 07:41:01,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:41:01,358 INFO L225 Difference]: With dead ends: 306 [2020-10-14 07:41:01,358 INFO L226 Difference]: Without dead ends: 175 [2020-10-14 07:41:01,359 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=315, Invalid=497, Unknown=0, NotChecked=0, Total=812 [2020-10-14 07:41:01,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-10-14 07:41:01,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 169. [2020-10-14 07:41:01,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2020-10-14 07:41:01,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 202 transitions. [2020-10-14 07:41:01,369 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 202 transitions. Word has length 214 [2020-10-14 07:41:01,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:41:01,370 INFO L479 AbstractCegarLoop]: Abstraction has 169 states and 202 transitions. [2020-10-14 07:41:01,370 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 07:41:01,370 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 202 transitions. [2020-10-14 07:41:01,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2020-10-14 07:41:01,372 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:41:01,372 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 39, 38, 11, 11, 8, 8, 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] [2020-10-14 07:41:01,372 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-14 07:41:01,372 INFO L427 AbstractCegarLoop]: === Iteration 35 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:41:01,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:41:01,373 INFO L82 PathProgramCache]: Analyzing trace with hash 657156274, now seen corresponding path program 3 times [2020-10-14 07:41:01,373 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:41:01,373 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [479391167] [2020-10-14 07:41:01,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:41:01,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:01,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:01,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:01,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:01,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:02,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:06,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:06,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-10-14 07:41:06,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 07:41:06,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5109 [2020-10-14 07:41:06,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:06,500 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:06,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 07:41:06,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 07:41:06,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 07:41:06,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:41:06,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:41:06,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:06,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:06,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:06,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:41:06,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:41:06,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:41:06,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:06,634 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:06,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:41:06,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:41:06,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:41:06,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:41:06,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 07:41:06,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:06,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:06,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:06,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:06,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-14 07:41:06,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:41:06,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-10-14 07:41:06,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:06,793 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:06,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:41:06,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-10-14 07:41:06,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:41:06,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:41:06,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-14 07:41:06,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:06,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:06,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:06,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:06,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-14 07:41:06,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:41:06,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-10-14 07:41:06,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:06,945 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:06,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:41:06,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-10-14 07:41:06,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:41:06,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:41:06,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2020-10-14 07:41:06,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:06,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:06,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:07,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:07,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-14 07:41:07,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:41:07,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-10-14 07:41:07,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:07,094 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:07,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:41:07,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-10-14 07:41:07,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:41:07,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:41:07,132 INFO L134 CoverageAnalysis]: Checked inductivity of 3281 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 3160 trivial. 0 not checked. [2020-10-14 07:41:07,133 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [479391167] [2020-10-14 07:41:07,133 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:41:07,133 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 07:41:07,133 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78755460] [2020-10-14 07:41:07,134 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 07:41:07,134 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:41:07,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 07:41:07,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-14 07:41:07,134 INFO L87 Difference]: Start difference. First operand 169 states and 202 transitions. Second operand 15 states. [2020-10-14 07:41:07,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:41:07,325 INFO L93 Difference]: Finished difference Result 312 states and 378 transitions. [2020-10-14 07:41:07,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 07:41:07,325 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 226 [2020-10-14 07:41:07,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:41:07,327 INFO L225 Difference]: With dead ends: 312 [2020-10-14 07:41:07,327 INFO L226 Difference]: Without dead ends: 172 [2020-10-14 07:41:07,328 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 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 07:41:07,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-10-14 07:41:07,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 171. [2020-10-14 07:41:07,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2020-10-14 07:41:07,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 204 transitions. [2020-10-14 07:41:07,340 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 204 transitions. Word has length 226 [2020-10-14 07:41:07,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:41:07,341 INFO L479 AbstractCegarLoop]: Abstraction has 171 states and 204 transitions. [2020-10-14 07:41:07,341 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 07:41:07,341 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 204 transitions. [2020-10-14 07:41:07,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2020-10-14 07:41:07,343 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:41:07,343 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 39, 38, 12, 12, 8, 8, 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] [2020-10-14 07:41:07,344 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-14 07:41:07,344 INFO L427 AbstractCegarLoop]: === Iteration 36 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:41:07,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:41:07,344 INFO L82 PathProgramCache]: Analyzing trace with hash 720819572, now seen corresponding path program 4 times [2020-10-14 07:41:07,344 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:41:07,345 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [567860061] [2020-10-14 07:41:07,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:41:07,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:07,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:07,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:07,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:07,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:07,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:09,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:10,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:12,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:12,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-14 07:41:12,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 07:41:12,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5042 [2020-10-14 07:41:12,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:12,405 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:12,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 07:41:12,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 07:41:12,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 07:41:12,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:41:12,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:41:12,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:12,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:12,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:12,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:41:12,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:41:12,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:41:12,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:12,553 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:12,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:41:12,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:41:12,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:41:12,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:41:12,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-14 07:41:12,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:12,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:12,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:12,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:12,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-14 07:41:12,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:41:12,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-10-14 07:41:12,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:12,696 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:12,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:41:12,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-10-14 07:41:12,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:41:12,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:41:12,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-14 07:41:12,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:12,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:12,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:12,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:12,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-14 07:41:12,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:41:12,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-14 07:41:12,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:12,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:12,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:41:12,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-10-14 07:41:12,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:41:12,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:41:12,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-10-14 07:41:12,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:12,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:12,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:13,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:13,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-14 07:41:13,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:41:13,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-10-14 07:41:13,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:13,023 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:13,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:41:13,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-10-14 07:41:13,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:41:13,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:41:13,047 INFO L134 CoverageAnalysis]: Checked inductivity of 3304 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 3160 trivial. 0 not checked. [2020-10-14 07:41:13,047 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [567860061] [2020-10-14 07:41:13,048 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:41:13,048 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 07:41:13,048 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193240671] [2020-10-14 07:41:13,048 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 07:41:13,048 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:41:13,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 07:41:13,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-14 07:41:13,049 INFO L87 Difference]: Start difference. First operand 171 states and 204 transitions. Second operand 16 states. [2020-10-14 07:41:13,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:41:13,232 INFO L93 Difference]: Finished difference Result 314 states and 380 transitions. [2020-10-14 07:41:13,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 07:41:13,233 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 228 [2020-10-14 07:41:13,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:41:13,235 INFO L225 Difference]: With dead ends: 314 [2020-10-14 07:41:13,235 INFO L226 Difference]: Without dead ends: 174 [2020-10-14 07:41:13,236 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 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 07:41:13,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2020-10-14 07:41:13,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 173. [2020-10-14 07:41:13,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2020-10-14 07:41:13,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 206 transitions. [2020-10-14 07:41:13,248 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 206 transitions. Word has length 228 [2020-10-14 07:41:13,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:41:13,248 INFO L479 AbstractCegarLoop]: Abstraction has 173 states and 206 transitions. [2020-10-14 07:41:13,249 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 07:41:13,249 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 206 transitions. [2020-10-14 07:41:13,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2020-10-14 07:41:13,251 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:41:13,252 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 39, 38, 13, 13, 8, 8, 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] [2020-10-14 07:41:13,252 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-14 07:41:13,252 INFO L427 AbstractCegarLoop]: === Iteration 37 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:41:13,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:41:13,253 INFO L82 PathProgramCache]: Analyzing trace with hash 1771706806, now seen corresponding path program 5 times [2020-10-14 07:41:13,253 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:41:13,253 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [455234869] [2020-10-14 07:41:13,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:41:13,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:13,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:13,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:13,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:13,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:18,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:18,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 242 [2020-10-14 07:41:18,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:41:18,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-14 07:41:18,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:18,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:18,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 07:41:18,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 160 [2020-10-14 07:41:18,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 07:41:18,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:41:18,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:41:18,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:18,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:18,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:18,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:41:18,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:41:18,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:41:18,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:18,385 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:18,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:41:18,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:41:18,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:41:18,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:41:18,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-14 07:41:18,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:18,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:18,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:18,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:18,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-14 07:41:18,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:41:18,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 179 [2020-10-14 07:41:18,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:18,568 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:18,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:41:18,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:41:18,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:41:18,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:41:18,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-14 07:41:18,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:18,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:18,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:18,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:18,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-14 07:41:18,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:41:18,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 174 [2020-10-14 07:41:18,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:18,750 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:18,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:41:18,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:41:18,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:41:18,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:41:18,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-10-14 07:41:18,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:18,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:18,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:19,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:19,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-14 07:41:19,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:41:19,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 291 [2020-10-14 07:41:19,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:19,060 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:19,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:41:19,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-10-14 07:41:19,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:41:19,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:41:19,113 INFO L134 CoverageAnalysis]: Checked inductivity of 3329 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 3265 trivial. 0 not checked. [2020-10-14 07:41:19,115 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [455234869] [2020-10-14 07:41:19,115 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:41:19,115 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 07:41:19,117 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221953033] [2020-10-14 07:41:19,118 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 07:41:19,118 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:41:19,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 07:41:19,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-14 07:41:19,120 INFO L87 Difference]: Start difference. First operand 173 states and 206 transitions. Second operand 12 states. [2020-10-14 07:41:19,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:41:19,212 INFO L93 Difference]: Finished difference Result 293 states and 353 transitions. [2020-10-14 07:41:19,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 07:41:19,213 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 230 [2020-10-14 07:41:19,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:41:19,214 INFO L225 Difference]: With dead ends: 293 [2020-10-14 07:41:19,215 INFO L226 Difference]: Without dead ends: 176 [2020-10-14 07:41:19,215 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 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 07:41:19,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2020-10-14 07:41:19,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 175. [2020-10-14 07:41:19,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2020-10-14 07:41:19,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 208 transitions. [2020-10-14 07:41:19,225 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 208 transitions. Word has length 230 [2020-10-14 07:41:19,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:41:19,226 INFO L479 AbstractCegarLoop]: Abstraction has 175 states and 208 transitions. [2020-10-14 07:41:19,226 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 07:41:19,226 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 208 transitions. [2020-10-14 07:41:19,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2020-10-14 07:41:19,228 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:41:19,228 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 39, 38, 13, 13, 9, 9, 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] [2020-10-14 07:41:19,228 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-14 07:41:19,229 INFO L427 AbstractCegarLoop]: === Iteration 38 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:41:19,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:41:19,229 INFO L82 PathProgramCache]: Analyzing trace with hash 282225684, now seen corresponding path program 6 times [2020-10-14 07:41:19,229 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:41:19,229 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [44735898] [2020-10-14 07:41:19,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:41:19,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:19,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:19,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:19,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:19,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:20,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:22,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:22,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:24,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:24,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-14 07:41:24,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 07:41:24,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 07:41:24,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:24,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:24,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 07:41:24,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-10-14 07:41:24,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-14 07:41:24,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:41:24,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:41:24,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:24,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:24,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:24,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:41:24,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:41:24,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:41:24,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:24,273 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:24,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:41:24,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:41:24,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:41:24,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:41:24,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-14 07:41:24,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:24,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:24,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:24,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:24,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-14 07:41:24,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:41:24,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 175 [2020-10-14 07:41:24,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:24,452 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:24,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:41:24,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:41:24,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:41:24,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:41:24,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-14 07:41:24,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:24,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:24,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:24,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-14 07:41:24,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:41:24,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-14 07:41:24,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:24,593 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:24,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 07:41:24,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 07:41:24,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-14 07:41:24,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:41:24,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-10-14 07:41:24,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:24,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:24,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:24,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:24,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-14 07:41:24,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:41:24,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-10-14 07:41:24,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:24,926 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:24,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:41:24,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-10-14 07:41:24,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:41:24,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:41:24,953 INFO L134 CoverageAnalysis]: Checked inductivity of 3346 backedges. 706 proven. 1031 refuted. 0 times theorem prover too weak. 1609 trivial. 0 not checked. [2020-10-14 07:41:24,954 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [44735898] [2020-10-14 07:41:24,954 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:41:24,954 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 07:41:24,954 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393665122] [2020-10-14 07:41:24,955 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 07:41:24,955 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:41:24,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 07:41:24,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-14 07:41:24,955 INFO L87 Difference]: Start difference. First operand 175 states and 208 transitions. Second operand 17 states. [2020-10-14 07:41:25,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:41:25,419 INFO L93 Difference]: Finished difference Result 330 states and 406 transitions. [2020-10-14 07:41:25,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 07:41:25,419 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 232 [2020-10-14 07:41:25,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:41:25,423 INFO L225 Difference]: With dead ends: 330 [2020-10-14 07:41:25,423 INFO L226 Difference]: Without dead ends: 189 [2020-10-14 07:41:25,424 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=360, Invalid=570, Unknown=0, NotChecked=0, Total=930 [2020-10-14 07:41:25,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2020-10-14 07:41:25,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 183. [2020-10-14 07:41:25,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2020-10-14 07:41:25,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 218 transitions. [2020-10-14 07:41:25,436 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 218 transitions. Word has length 232 [2020-10-14 07:41:25,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:41:25,437 INFO L479 AbstractCegarLoop]: Abstraction has 183 states and 218 transitions. [2020-10-14 07:41:25,437 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 07:41:25,437 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 218 transitions. [2020-10-14 07:41:25,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2020-10-14 07:41:25,439 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:41:25,439 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 42, 41, 13, 13, 9, 9, 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] [2020-10-14 07:41:25,440 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-14 07:41:25,440 INFO L427 AbstractCegarLoop]: === Iteration 39 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:41:25,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:41:25,440 INFO L82 PathProgramCache]: Analyzing trace with hash 1191223087, now seen corresponding path program 7 times [2020-10-14 07:41:25,441 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:41:25,441 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [946574297] [2020-10-14 07:41:25,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:41:25,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:25,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:25,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:25,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:25,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:30,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:30,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 256 [2020-10-14 07:41:30,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:41:30,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5097 [2020-10-14 07:41:30,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:30,558 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:30,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 07:41:30,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 07:41:30,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 07:41:30,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:41:30,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:41:30,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:30,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:30,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:30,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:41:30,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:41:30,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:41:30,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:30,722 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:30,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:41:30,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:41:30,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:41:30,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:41:30,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-14 07:41:30,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:30,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:30,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:30,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:30,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-14 07:41:30,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:41:30,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-10-14 07:41:30,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:30,890 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:30,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:41:30,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 63 [2020-10-14 07:41:30,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:41:30,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:41:30,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-14 07:41:30,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:30,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:30,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:31,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:31,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-14 07:41:31,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:41:31,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-10-14 07:41:31,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:31,060 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:31,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:41:31,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 63 [2020-10-14 07:41:31,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:41:31,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:41:31,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-10-14 07:41:31,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:31,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:31,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:31,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:31,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-14 07:41:31,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:41:31,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 183 [2020-10-14 07:41:31,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:31,258 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:31,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:41:31,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 63 [2020-10-14 07:41:31,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:41:31,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:41:31,286 INFO L134 CoverageAnalysis]: Checked inductivity of 3835 backedges. 0 proven. 169 refuted. 0 times theorem prover too weak. 3666 trivial. 0 not checked. [2020-10-14 07:41:31,286 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [946574297] [2020-10-14 07:41:31,286 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:41:31,286 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 07:41:31,286 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701118487] [2020-10-14 07:41:31,287 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 07:41:31,287 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:41:31,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 07:41:31,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-14 07:41:31,287 INFO L87 Difference]: Start difference. First operand 183 states and 218 transitions. Second operand 17 states. [2020-10-14 07:41:31,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:41:31,442 INFO L93 Difference]: Finished difference Result 336 states and 406 transitions. [2020-10-14 07:41:31,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 07:41:31,442 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 244 [2020-10-14 07:41:31,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:41:31,444 INFO L225 Difference]: With dead ends: 336 [2020-10-14 07:41:31,444 INFO L226 Difference]: Without dead ends: 186 [2020-10-14 07:41:31,445 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 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 07:41:31,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-10-14 07:41:31,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 185. [2020-10-14 07:41:31,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2020-10-14 07:41:31,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 220 transitions. [2020-10-14 07:41:31,455 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 220 transitions. Word has length 244 [2020-10-14 07:41:31,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:41:31,455 INFO L479 AbstractCegarLoop]: Abstraction has 185 states and 220 transitions. [2020-10-14 07:41:31,455 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 07:41:31,455 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 220 transitions. [2020-10-14 07:41:31,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2020-10-14 07:41:31,457 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:41:31,458 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 42, 41, 14, 14, 9, 9, 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] [2020-10-14 07:41:31,458 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-14 07:41:31,458 INFO L427 AbstractCegarLoop]: === Iteration 40 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:41:31,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:41:31,458 INFO L82 PathProgramCache]: Analyzing trace with hash -899211407, now seen corresponding path program 8 times [2020-10-14 07:41:31,459 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:41:31,459 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1087820586] [2020-10-14 07:41:31,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:41:31,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:31,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:31,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:31,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:31,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:32,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:33,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:35,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:36,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:36,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 258 [2020-10-14 07:41:36,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 07:41:36,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-14 07:41:36,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:36,485 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:36,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 07:41:36,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 170 [2020-10-14 07:41:36,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 07:41:36,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:41:36,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:41:36,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:36,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:36,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:36,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:41:36,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:41:36,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:41:36,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:36,609 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:36,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:41:36,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:41:36,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:41:36,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:41:36,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-14 07:41:36,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:36,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:36,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:36,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:36,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-14 07:41:36,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:41:36,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 212 [2020-10-14 07:41:36,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:36,825 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:36,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:41:36,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:41:36,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:41:36,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:41:36,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-14 07:41:36,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:36,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:36,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:37,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:37,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-14 07:41:37,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:41:37,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 207 [2020-10-14 07:41:37,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:37,041 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:37,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:41:37,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:41:37,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:41:37,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:41:37,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-14 07:41:37,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:37,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:37,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:37,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:37,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-14 07:41:37,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:41:37,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 175 [2020-10-14 07:41:37,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:37,237 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:37,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:41:37,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 63 [2020-10-14 07:41:37,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:41:37,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:41:37,264 INFO L134 CoverageAnalysis]: Checked inductivity of 3862 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 3781 trivial. 0 not checked. [2020-10-14 07:41:37,264 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1087820586] [2020-10-14 07:41:37,264 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:41:37,265 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 07:41:37,265 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128306074] [2020-10-14 07:41:37,265 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 07:41:37,265 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:41:37,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 07:41:37,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-14 07:41:37,266 INFO L87 Difference]: Start difference. First operand 185 states and 220 transitions. Second operand 13 states. [2020-10-14 07:41:37,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:41:37,418 INFO L93 Difference]: Finished difference Result 313 states and 377 transitions. [2020-10-14 07:41:37,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 07:41:37,419 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 246 [2020-10-14 07:41:37,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:41:37,420 INFO L225 Difference]: With dead ends: 313 [2020-10-14 07:41:37,420 INFO L226 Difference]: Without dead ends: 188 [2020-10-14 07:41:37,421 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-14 07:41:37,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2020-10-14 07:41:37,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 187. [2020-10-14 07:41:37,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2020-10-14 07:41:37,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 222 transitions. [2020-10-14 07:41:37,437 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 222 transitions. Word has length 246 [2020-10-14 07:41:37,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:41:37,439 INFO L479 AbstractCegarLoop]: Abstraction has 187 states and 222 transitions. [2020-10-14 07:41:37,439 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 07:41:37,440 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 222 transitions. [2020-10-14 07:41:37,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2020-10-14 07:41:37,443 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:41:37,444 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 42, 41, 14, 14, 10, 10, 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] [2020-10-14 07:41:37,444 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-14 07:41:37,444 INFO L427 AbstractCegarLoop]: === Iteration 41 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:41:37,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:41:37,445 INFO L82 PathProgramCache]: Analyzing trace with hash -880471345, now seen corresponding path program 9 times [2020-10-14 07:41:37,445 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:41:37,445 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [418209964] [2020-10-14 07:41:37,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:41:37,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:37,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:37,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:37,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:39,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:42,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:42,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 260 [2020-10-14 07:41:42,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:41:42,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-14 07:41:42,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:42,489 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:42,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 07:41:42,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-14 07:41:42,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-14 07:41:42,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:41:42,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:41:42,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:42,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:42,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:42,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:41:42,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:41:42,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:41:42,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:42,511 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:42,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:41:42,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:41:42,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:41:42,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:41:42,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-14 07:41:42,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:42,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:42,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:42,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-14 07:41:42,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:41:42,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-10-14 07:41:42,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:42,680 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:42,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 07:41:42,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 07:41:42,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-14 07:41:42,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:41:42,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-14 07:41:42,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:42,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:42,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:43,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:43,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-14 07:41:43,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:41:43,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-10-14 07:41:43,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:43,040 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:43,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:41:43,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 63 [2020-10-14 07:41:43,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:41:43,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:41:43,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2020-10-14 07:41:43,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:43,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:43,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:43,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:43,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-14 07:41:43,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:41:43,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-10-14 07:41:43,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:43,221 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:43,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:41:43,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 63 [2020-10-14 07:41:43,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:41:43,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:41:43,251 INFO L134 CoverageAnalysis]: Checked inductivity of 3881 backedges. 0 proven. 2010 refuted. 0 times theorem prover too weak. 1871 trivial. 0 not checked. [2020-10-14 07:41:43,251 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [418209964] [2020-10-14 07:41:43,252 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:41:43,252 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-14 07:41:43,252 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46773444] [2020-10-14 07:41:43,252 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-14 07:41:43,253 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:41:43,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-14 07:41:43,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-14 07:41:43,253 INFO L87 Difference]: Start difference. First operand 187 states and 222 transitions. Second operand 18 states. [2020-10-14 07:41:43,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:41:43,789 INFO L93 Difference]: Finished difference Result 352 states and 432 transitions. [2020-10-14 07:41:43,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 07:41:43,789 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 248 [2020-10-14 07:41:43,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:41:43,791 INFO L225 Difference]: With dead ends: 352 [2020-10-14 07:41:43,791 INFO L226 Difference]: Without dead ends: 201 [2020-10-14 07:41:43,792 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=408, Invalid=648, Unknown=0, NotChecked=0, Total=1056 [2020-10-14 07:41:43,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2020-10-14 07:41:43,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 195. [2020-10-14 07:41:43,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2020-10-14 07:41:43,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 232 transitions. [2020-10-14 07:41:43,804 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 232 transitions. Word has length 248 [2020-10-14 07:41:43,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:41:43,804 INFO L479 AbstractCegarLoop]: Abstraction has 195 states and 232 transitions. [2020-10-14 07:41:43,804 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-14 07:41:43,804 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 232 transitions. [2020-10-14 07:41:43,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2020-10-14 07:41:43,807 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:41:43,807 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 45, 44, 14, 14, 10, 10, 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] [2020-10-14 07:41:43,807 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-14 07:41:43,808 INFO L427 AbstractCegarLoop]: === Iteration 42 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:41:43,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:41:43,808 INFO L82 PathProgramCache]: Analyzing trace with hash -1605719190, now seen corresponding path program 10 times [2020-10-14 07:41:43,808 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:41:43,808 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1314559249] [2020-10-14 07:41:43,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:41:43,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:43,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:43,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:43,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:43,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:46,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:47,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:48,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:48,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:48,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 272 [2020-10-14 07:41:48,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 07:41:48,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5041 [2020-10-14 07:41:48,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:48,870 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:48,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 07:41:48,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 07:41:48,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 07:41:48,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:41:49,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:41:49,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:49,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:49,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:49,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:41:49,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:41:49,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:41:49,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:49,058 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:49,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:41:49,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:41:49,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:41:49,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:41:49,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-14 07:41:49,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:49,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:49,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:49,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:49,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 07:41:49,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:41:49,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 191 [2020-10-14 07:41:49,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:49,259 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:49,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:41:49,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-14 07:41:49,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:41:49,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:41:49,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-14 07:41:49,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:49,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:49,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:49,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:49,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 07:41:49,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:41:49,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 194 [2020-10-14 07:41:49,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:49,465 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:49,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:41:49,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-14 07:41:49,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:41:49,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:41:49,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-10-14 07:41:49,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:49,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:49,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:49,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:49,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 07:41:49,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:41:49,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 211 [2020-10-14 07:41:49,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:49,693 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:49,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:41:49,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-14 07:41:49,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:41:49,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:41:49,723 INFO L134 CoverageAnalysis]: Checked inductivity of 4406 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 4210 trivial. 0 not checked. [2020-10-14 07:41:49,724 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1314559249] [2020-10-14 07:41:49,724 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:41:49,724 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-14 07:41:49,724 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802261795] [2020-10-14 07:41:49,725 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-14 07:41:49,725 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:41:49,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-14 07:41:49,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-14 07:41:49,725 INFO L87 Difference]: Start difference. First operand 195 states and 232 transitions. Second operand 18 states. [2020-10-14 07:41:49,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:41:49,936 INFO L93 Difference]: Finished difference Result 358 states and 432 transitions. [2020-10-14 07:41:49,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 07:41:49,937 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 260 [2020-10-14 07:41:49,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:41:49,939 INFO L225 Difference]: With dead ends: 358 [2020-10-14 07:41:49,939 INFO L226 Difference]: Without dead ends: 198 [2020-10-14 07:41:49,940 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 9 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 07:41:49,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2020-10-14 07:41:49,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 197. [2020-10-14 07:41:49,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2020-10-14 07:41:49,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 234 transitions. [2020-10-14 07:41:49,954 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 234 transitions. Word has length 260 [2020-10-14 07:41:49,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:41:49,954 INFO L479 AbstractCegarLoop]: Abstraction has 197 states and 234 transitions. [2020-10-14 07:41:49,954 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-14 07:41:49,954 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 234 transitions. [2020-10-14 07:41:49,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2020-10-14 07:41:49,956 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:41:49,957 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 45, 44, 15, 15, 10, 10, 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] [2020-10-14 07:41:49,957 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-14 07:41:49,957 INFO L427 AbstractCegarLoop]: === Iteration 43 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:41:49,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:41:49,957 INFO L82 PathProgramCache]: Analyzing trace with hash 1383884716, now seen corresponding path program 11 times [2020-10-14 07:41:49,958 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:41:49,958 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [22429650] [2020-10-14 07:41:49,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:41:49,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:49,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:50,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:50,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:50,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:55,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:55,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-14 07:41:55,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:41:55,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5045 [2020-10-14 07:41:55,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:55,022 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:55,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 07:41:55,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 180 [2020-10-14 07:41:55,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 07:41:55,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:41:55,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:41:55,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:55,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:55,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:55,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:41:55,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:41:55,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:41:55,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:55,146 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:55,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:41:55,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:41:55,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:41:55,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 07:41:55,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-14 07:41:55,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:55,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:55,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:55,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:55,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 07:41:55,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:41:55,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 185 [2020-10-14 07:41:55,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:55,339 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:55,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:41:55,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:41:55,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:41:55,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:41:55,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-14 07:41:55,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:55,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:55,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:55,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:55,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 07:41:55,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:41:55,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 196 [2020-10-14 07:41:55,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:55,544 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:55,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:41:55,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:41:55,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:41:55,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:41:55,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2020-10-14 07:41:55,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:55,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking...