/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-crafted/bAnd4.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 17:35:32,576 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 17:35:32,581 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 17:35:32,636 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 17:35:32,637 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 17:35:32,647 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 17:35:32,652 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 17:35:32,654 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 17:35:32,657 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 17:35:32,658 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 17:35:32,660 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 17:35:32,661 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 17:35:32,661 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 17:35:32,662 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 17:35:32,664 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 17:35:32,666 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 17:35:32,667 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 17:35:32,668 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 17:35:32,670 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 17:35:32,672 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 17:35:32,674 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 17:35:32,675 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 17:35:32,677 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 17:35:32,678 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 17:35:32,681 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 17:35:32,681 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 17:35:32,681 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 17:35:32,682 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 17:35:32,683 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 17:35:32,684 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 17:35:32,685 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 17:35:32,686 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 17:35:32,687 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 17:35:32,688 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 17:35:32,689 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 17:35:32,689 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 17:35:32,690 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 17:35:32,691 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 17:35:32,691 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 17:35:32,692 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 17:35:32,693 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 17:35:32,695 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 17:35:32,722 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 17:35:32,723 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 17:35:32,725 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 17:35:32,725 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 17:35:32,725 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 17:35:32,725 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 17:35:32,726 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 17:35:32,726 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 17:35:32,726 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 17:35:32,726 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 17:35:32,727 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 17:35:32,727 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 17:35:32,727 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 17:35:32,727 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 17:35:32,728 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 17:35:32,728 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 17:35:32,728 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 17:35:32,728 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 17:35:32,729 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 17:35:32,729 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 17:35:32,729 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 17:35:32,729 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 17:35:32,730 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 17:35:32,730 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 17:35:32,730 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 17:35:32,730 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 17:35:32,731 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 17:35:32,731 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 17:35:32,731 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 17:35:32,731 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 17:35:33,104 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 17:35:33,129 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 17:35:33,140 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 17:35:33,144 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 17:35:33,145 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 17:35:33,146 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-crafted/bAnd4.i [2020-10-14 17:35:33,240 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9fe43ec66/34a97bff7c6c4dea986f246c3071ec10/FLAG937fd67fb [2020-10-14 17:35:33,883 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 17:35:33,884 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-crafted/bAnd4.i [2020-10-14 17:35:33,901 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9fe43ec66/34a97bff7c6c4dea986f246c3071ec10/FLAG937fd67fb [2020-10-14 17:35:34,135 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9fe43ec66/34a97bff7c6c4dea986f246c3071ec10 [2020-10-14 17:35:34,147 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 17:35:34,150 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 17:35:34,152 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 17:35:34,152 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 17:35:34,157 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 17:35:34,159 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 05:35:34" (1/1) ... [2020-10-14 17:35:34,163 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@161bae18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:35:34, skipping insertion in model container [2020-10-14 17:35:34,163 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 05:35:34" (1/1) ... [2020-10-14 17:35:34,174 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 17:35:34,200 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 17:35:34,426 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 17:35:34,442 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 17:35:34,474 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 17:35:34,496 INFO L208 MainTranslator]: Completed translation [2020-10-14 17:35:34,497 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:35:34 WrapperNode [2020-10-14 17:35:34,497 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 17:35:34,498 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 17:35:34,499 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 17:35:34,499 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 17:35:34,618 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:35:34" (1/1) ... [2020-10-14 17:35:34,619 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:35:34" (1/1) ... [2020-10-14 17:35:34,635 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:35:34" (1/1) ... [2020-10-14 17:35:34,636 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:35:34" (1/1) ... [2020-10-14 17:35:34,658 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:35:34" (1/1) ... [2020-10-14 17:35:34,665 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:35:34" (1/1) ... [2020-10-14 17:35:34,667 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:35:34" (1/1) ... [2020-10-14 17:35:34,671 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 17:35:34,671 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 17:35:34,672 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 17:35:34,672 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 17:35:34,673 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:35:34" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 17:35:34,763 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 17:35:34,764 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 17:35:34,765 INFO L138 BoogieDeclarations]: Found implementation of procedure bAnd [2020-10-14 17:35:34,765 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 17:35:34,766 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 17:35:34,768 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 17:35:34,768 INFO L130 BoogieDeclarations]: Found specification of procedure bAnd [2020-10-14 17:35:34,768 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-14 17:35:34,768 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 17:35:34,769 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-14 17:35:34,769 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-14 17:35:34,769 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 17:35:34,769 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 17:35:34,769 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 17:35:35,185 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 17:35:35,186 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-14 17:35:35,200 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 05:35:35 BoogieIcfgContainer [2020-10-14 17:35:35,200 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 17:35:35,202 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 17:35:35,203 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 17:35:35,207 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 17:35:35,208 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 05:35:34" (1/3) ... [2020-10-14 17:35:35,209 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@499b683e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 05:35:35, skipping insertion in model container [2020-10-14 17:35:35,210 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:35:34" (2/3) ... [2020-10-14 17:35:35,211 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@499b683e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 05:35:35, skipping insertion in model container [2020-10-14 17:35:35,211 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 05:35:35" (3/3) ... [2020-10-14 17:35:35,213 INFO L109 eAbstractionObserver]: Analyzing ICFG bAnd4.i [2020-10-14 17:35:35,228 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 17:35:35,239 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 17:35:35,259 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 17:35:35,287 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 17:35:35,287 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 17:35:35,287 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 17:35:35,287 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 17:35:35,287 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 17:35:35,287 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 17:35:35,288 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 17:35:35,288 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 17:35:35,312 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-10-14 17:35:35,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-14 17:35:35,320 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:35:35,321 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 17:35:35,322 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:35:35,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:35:35,328 INFO L82 PathProgramCache]: Analyzing trace with hash -1283808693, now seen corresponding path program 1 times [2020-10-14 17:35:35,339 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:35:35,340 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1768927860] [2020-10-14 17:35:35,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:35:35,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:35:35,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:35,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:35,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:35,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:36,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:36,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:35:36,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-14 17:35:36,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 17:35:36,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1146 [2020-10-14 17:35:36,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:35:36,634 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:35:36,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:35:36,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 17:35:36,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 17:35:36,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-14 17:35:36,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:35:36,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:35:36,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:36,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:35:36,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:35:36,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:35:36,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 17:35:36,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:35:36,737 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:35:36,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:35:36,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:35:36,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:35:36,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:35:36,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 17:35:36,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:35:36,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:36,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:35:36,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 17:35:36,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:35:36,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 17:35:36,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:35:36,771 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:35:36,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:35:36,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:35:36,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 17:35:36,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:35:36,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-14 17:35:36,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:35:36,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:36,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:36,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:35:36,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 17:35:36,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:35:36,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 17:35:36,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:35:36,814 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:35:36,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:35:36,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:35:36,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 17:35:36,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 18 [2020-10-14 17:35:36,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 17:35:36,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:35:36,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:36,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:36,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:35:36,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 17:35:36,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:35:36,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 17:35:36,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:35:36,869 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:35:36,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:35:36,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:35:36,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 17:35:36,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:35:36,881 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 17:35:36,882 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1768927860] [2020-10-14 17:35:36,885 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 17:35:36,886 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 17:35:36,888 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770084077] [2020-10-14 17:35:36,896 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 17:35:36,896 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:35:36,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 17:35:36,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 17:35:36,919 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 4 states. [2020-10-14 17:35:37,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:35:37,101 INFO L93 Difference]: Finished difference Result 56 states and 75 transitions. [2020-10-14 17:35:37,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 17:35:37,104 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2020-10-14 17:35:37,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:35:37,117 INFO L225 Difference]: With dead ends: 56 [2020-10-14 17:35:37,118 INFO L226 Difference]: Without dead ends: 28 [2020-10-14 17:35:37,122 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 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 17:35:37,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-14 17:35:37,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2020-10-14 17:35:37,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-14 17:35:37,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2020-10-14 17:35:37,182 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 32 [2020-10-14 17:35:37,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:35:37,183 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2020-10-14 17:35:37,183 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 17:35:37,183 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2020-10-14 17:35:37,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-14 17:35:37,187 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:35:37,187 INFO L422 BasicCegarLoop]: trace histogram [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 17:35:37,188 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 17:35:37,188 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:35:37,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:35:37,189 INFO L82 PathProgramCache]: Analyzing trace with hash 540504713, now seen corresponding path program 1 times [2020-10-14 17:35:37,189 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:35:37,190 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2054490305] [2020-10-14 17:35:37,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:35:37,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:35:37,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:37,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:37,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:37,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:37,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:39,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:35:39,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-14 17:35:39,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 17:35:39,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2405 [2020-10-14 17:35:39,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:35:39,612 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:35:39,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 17:35:39,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-14 17:35:39,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 17:35:39,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:35:39,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:35:39,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:35:39,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:39,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:35:39,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:35:39,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:35:39,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:35:39,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:35:39,644 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:35:39,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:35:39,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:35:39,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:35:39,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:35:39,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 17:35:39,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:35:39,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:39,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:39,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:35:39,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 17:35:39,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:35:39,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 17:35:39,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:35:39,669 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:35:39,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 17:35:39,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:35:39,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 17:35:39,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:35:39,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-14 17:35:39,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:35:39,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:39,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:39,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:35:39,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 17:35:39,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:35:39,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 17:35:39,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:35:39,707 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:35:39,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 17:35:39,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:35:39,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 17:35:39,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:35:39,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 17:35:39,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:35:39,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:39,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:35:39,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 17:35:39,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:35:39,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 17:35:39,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:35:39,731 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:35:39,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 17:35:39,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:35:39,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 17:35:39,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:35:39,738 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-14 17:35:39,739 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2054490305] [2020-10-14 17:35:39,739 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:35:39,739 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 17:35:39,740 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937606860] [2020-10-14 17:35:39,741 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 17:35:39,742 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:35:39,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 17:35:39,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 17:35:39,743 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand 5 states. [2020-10-14 17:35:39,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:35:39,871 INFO L93 Difference]: Finished difference Result 48 states and 58 transitions. [2020-10-14 17:35:39,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 17:35:39,872 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 38 [2020-10-14 17:35:39,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:35:39,873 INFO L225 Difference]: With dead ends: 48 [2020-10-14 17:35:39,874 INFO L226 Difference]: Without dead ends: 30 [2020-10-14 17:35:39,875 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 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 17:35:39,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-14 17:35:39,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2020-10-14 17:35:39,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-14 17:35:39,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2020-10-14 17:35:39,884 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 38 [2020-10-14 17:35:39,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:35:39,884 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2020-10-14 17:35:39,884 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 17:35:39,885 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2020-10-14 17:35:39,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-14 17:35:39,886 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:35:39,887 INFO L422 BasicCegarLoop]: trace histogram [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 17:35:39,887 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 17:35:39,887 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:35:39,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:35:39,888 INFO L82 PathProgramCache]: Analyzing trace with hash -919236729, now seen corresponding path program 2 times [2020-10-14 17:35:39,888 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:35:39,888 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1510507411] [2020-10-14 17:35:39,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:35:39,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:35:39,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:39,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:39,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:39,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:40,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:44,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:35:44,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-14 17:35:44,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 17:35:44,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4819 [2020-10-14 17:35:44,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:35:44,719 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:35:44,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 17:35:44,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-14 17:35:44,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:35:44,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:35:44,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:35:44,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:35:44,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:44,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:35:44,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:35:44,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:35:44,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:35:44,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:35:44,759 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:35:44,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:35:44,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:35:44,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:35:44,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:35:44,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 17:35:44,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:35:44,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:44,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:44,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:35:44,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 17:35:44,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:35:44,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-14 17:35:44,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:35:44,793 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:35:44,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 17:35:44,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:35:44,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:35:44,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:35:44,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-14 17:35:44,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:35:44,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:44,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:44,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:35:44,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 17:35:44,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:35:44,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-14 17:35:44,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:35:44,853 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:35:44,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 17:35:44,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:35:44,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:35:44,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:35:44,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-14 17:35:44,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:35:44,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:44,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:35:44,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 17:35:44,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:35:44,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 17:35:44,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:35:44,884 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:35:44,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 17:35:44,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:35:44,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:35:44,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:35:44,893 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 12 proven. 24 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-10-14 17:35:44,894 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1510507411] [2020-10-14 17:35:44,894 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:35:44,895 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 17:35:44,895 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714718624] [2020-10-14 17:35:44,896 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 17:35:44,896 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:35:44,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 17:35:44,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 17:35:44,898 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand 6 states. [2020-10-14 17:35:45,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:35:45,086 INFO L93 Difference]: Finished difference Result 52 states and 62 transitions. [2020-10-14 17:35:45,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 17:35:45,088 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 44 [2020-10-14 17:35:45,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:35:45,089 INFO L225 Difference]: With dead ends: 52 [2020-10-14 17:35:45,089 INFO L226 Difference]: Without dead ends: 32 [2020-10-14 17:35:45,090 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-14 17:35:45,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-14 17:35:45,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2020-10-14 17:35:45,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-14 17:35:45,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2020-10-14 17:35:45,104 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 44 [2020-10-14 17:35:45,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:35:45,105 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2020-10-14 17:35:45,105 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 17:35:45,106 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2020-10-14 17:35:45,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-14 17:35:45,108 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:35:45,109 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 17:35:45,109 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 17:35:45,110 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:35:45,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:35:45,110 INFO L82 PathProgramCache]: Analyzing trace with hash -1824311803, now seen corresponding path program 3 times [2020-10-14 17:35:45,111 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:35:45,112 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1816148388] [2020-10-14 17:35:45,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:35:45,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:35:45,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:45,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:45,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:45,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:45,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:50,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:35:50,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-14 17:35:50,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 17:35:50,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 17:35:50,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:35:50,132 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:35:50,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 17:35:50,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-14 17:35:50,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 17:35:50,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 17:35:50,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:35:50,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:35:50,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:50,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:35:50,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:35:50,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:35:50,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:35:50,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:35:50,172 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:35:50,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:35:50,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:35:50,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:35:50,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:35:50,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 17:35:50,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:35:50,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:50,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:50,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:35:50,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 17:35:50,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:35:50,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-14 17:35:50,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:35:50,213 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:35:50,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 17:35:50,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:35:50,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 17:35:50,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 17:35:50,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 17:35:50,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:35:50,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:50,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:35:50,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 17:35:50,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:35:50,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 17:35:50,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:35:50,293 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:35:50,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 17:35:50,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:35:50,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 17:35:50,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:35:50,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-14 17:35:50,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:35:50,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:50,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:50,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:35:50,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 17:35:50,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:35:50,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 17:35:50,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:35:50,328 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:35:50,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 17:35:50,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:35:50,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 17:35:50,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:35:50,341 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 27 proven. 54 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-10-14 17:35:50,342 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1816148388] [2020-10-14 17:35:50,343 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:35:50,343 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 17:35:50,343 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494676975] [2020-10-14 17:35:50,344 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 17:35:50,344 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:35:50,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 17:35:50,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-14 17:35:50,346 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 7 states. [2020-10-14 17:35:50,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:35:50,498 INFO L93 Difference]: Finished difference Result 56 states and 66 transitions. [2020-10-14 17:35:50,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 17:35:50,499 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 50 [2020-10-14 17:35:50,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:35:50,500 INFO L225 Difference]: With dead ends: 56 [2020-10-14 17:35:50,500 INFO L226 Difference]: Without dead ends: 34 [2020-10-14 17:35:50,501 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2020-10-14 17:35:50,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-14 17:35:50,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2020-10-14 17:35:50,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-14 17:35:50,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-10-14 17:35:50,508 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 50 [2020-10-14 17:35:50,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:35:50,508 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-10-14 17:35:50,508 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 17:35:50,509 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-10-14 17:35:50,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-14 17:35:50,509 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:35:50,510 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 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 17:35:50,510 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 17:35:50,510 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:35:50,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:35:50,511 INFO L82 PathProgramCache]: Analyzing trace with hash 79349251, now seen corresponding path program 4 times [2020-10-14 17:35:50,511 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:35:50,511 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [532943456] [2020-10-14 17:35:50,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:35:50,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:35:50,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:50,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:50,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:50,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:51,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:55,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:35:55,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-14 17:35:55,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 17:35:55,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 17:35:55,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:35:55,522 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:35:55,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 17:35:55,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-14 17:35:55,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 17:35:55,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 17:35:55,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:35:55,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:35:55,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:55,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:35:55,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:35:55,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:35:55,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:35:55,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:35:55,554 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:35:55,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:35:55,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:35:55,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:35:55,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:35:55,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 17:35:55,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:35:55,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:55,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:55,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:35:55,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 17:35:55,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:35:55,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-14 17:35:55,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:35:55,593 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:35:55,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 17:35:55,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:35:55,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 17:35:55,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:35:55,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-14 17:35:55,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:35:55,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:55,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:35:55,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 17:35:55,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:35:55,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 17:35:55,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:35:55,659 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:35:55,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 17:35:55,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:35:55,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 17:35:55,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:35:55,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-14 17:35:55,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:35:55,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:55,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:55,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:35:55,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 17:35:55,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:35:55,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 17:35:55,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:35:55,692 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:35:55,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 17:35:55,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:35:55,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 17:35:55,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:35:55,709 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 48 proven. 96 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-14 17:35:55,710 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [532943456] [2020-10-14 17:35:55,710 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:35:55,710 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 17:35:55,710 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183333926] [2020-10-14 17:35:55,711 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 17:35:55,711 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:35:55,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 17:35:55,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 17:35:55,712 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 8 states. [2020-10-14 17:35:55,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:35:55,884 INFO L93 Difference]: Finished difference Result 60 states and 70 transitions. [2020-10-14 17:35:55,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 17:35:55,884 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 56 [2020-10-14 17:35:55,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:35:55,885 INFO L225 Difference]: With dead ends: 60 [2020-10-14 17:35:55,885 INFO L226 Difference]: Without dead ends: 36 [2020-10-14 17:35:55,886 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 19 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 17:35:55,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-14 17:35:55,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2020-10-14 17:35:55,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-14 17:35:55,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-10-14 17:35:55,900 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 56 [2020-10-14 17:35:55,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:35:55,900 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-10-14 17:35:55,900 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 17:35:55,900 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-10-14 17:35:55,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-14 17:35:55,903 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:35:55,903 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 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 17:35:55,903 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 17:35:55,903 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:35:55,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:35:55,905 INFO L82 PathProgramCache]: Analyzing trace with hash -754016383, now seen corresponding path program 5 times [2020-10-14 17:35:55,905 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:35:55,905 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2141674385] [2020-10-14 17:35:55,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:35:55,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:35:55,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:55,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:55,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:55,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:57,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:00,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:36:00,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 17:36:00,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 17:36:00,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 17:36:00,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:36:00,917 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:36:00,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 17:36:00,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-14 17:36:00,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 17:36:00,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:36:00,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:36:00,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:36:00,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:00,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:36:00,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:36:00,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:36:00,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:36:00,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:36:00,937 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:36:00,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:36:00,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:36:00,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:36:00,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:36:00,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 17:36:00,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:36:00,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:00,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:00,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:36:00,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 17:36:00,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:36:00,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-14 17:36:00,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:36:00,968 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:36:00,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 17:36:00,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:36:00,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 17:36:00,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:36:01,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-14 17:36:01,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:36:01,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:01,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:36:01,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 17:36:01,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:36:01,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 17:36:01,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:36:01,048 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:36:01,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 17:36:01,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:36:01,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 17:36:01,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:36:01,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-14 17:36:01,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:36:01,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:01,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:01,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:36:01,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 17:36:01,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:36:01,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 17:36:01,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:36:01,080 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:36:01,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 17:36:01,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:36:01,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 17:36:01,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:36:01,090 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 75 proven. 150 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-10-14 17:36:01,090 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2141674385] [2020-10-14 17:36:01,090 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:36:01,091 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 17:36:01,091 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795617767] [2020-10-14 17:36:01,092 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 17:36:01,092 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:36:01,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 17:36:01,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-14 17:36:01,093 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 9 states. [2020-10-14 17:36:01,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:36:01,268 INFO L93 Difference]: Finished difference Result 64 states and 74 transitions. [2020-10-14 17:36:01,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 17:36:01,269 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 62 [2020-10-14 17:36:01,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:36:01,270 INFO L225 Difference]: With dead ends: 64 [2020-10-14 17:36:01,270 INFO L226 Difference]: Without dead ends: 38 [2020-10-14 17:36:01,271 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 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 17:36:01,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-14 17:36:01,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2020-10-14 17:36:01,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-14 17:36:01,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-10-14 17:36:01,277 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 62 [2020-10-14 17:36:01,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:36:01,277 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-10-14 17:36:01,277 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 17:36:01,277 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-10-14 17:36:01,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-14 17:36:01,279 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:36:01,279 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 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 17:36:01,279 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 17:36:01,279 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:36:01,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:36:01,280 INFO L82 PathProgramCache]: Analyzing trace with hash 2026447487, now seen corresponding path program 6 times [2020-10-14 17:36:01,280 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:36:01,280 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1143644894] [2020-10-14 17:36:01,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:36:01,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:36:01,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:01,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:01,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:01,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:02,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:06,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:36:06,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 17:36:06,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 17:36:06,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 17:36:06,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:36:06,288 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:36:06,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 17:36:06,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-14 17:36:06,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 17:36:06,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:36:06,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:36:06,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:36:06,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:06,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:36:06,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:36:06,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:36:06,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:36:06,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:36:06,314 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:36:06,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:36:06,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:36:06,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:36:06,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:36:06,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 17:36:06,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:36:06,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:06,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:06,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:36:06,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 17:36:06,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:36:06,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 17:36:06,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:36:06,340 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:36:06,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 17:36:06,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:36:06,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 17:36:06,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:36:06,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-14 17:36:06,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:36:06,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:06,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:36:06,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 17:36:06,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:36:06,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 17:36:06,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:36:06,436 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:36:06,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 17:36:06,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:36:06,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 17:36:06,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:36:06,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-14 17:36:06,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:36:06,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:06,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:06,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:36:06,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 17:36:06,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:36:06,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-14 17:36:06,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:36:06,489 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:36:06,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 17:36:06,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:36:06,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 17:36:06,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:36:06,504 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 108 proven. 216 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2020-10-14 17:36:06,504 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1143644894] [2020-10-14 17:36:06,504 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:36:06,505 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 17:36:06,506 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185507211] [2020-10-14 17:36:06,506 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 17:36:06,507 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:36:06,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 17:36:06,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-14 17:36:06,507 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 10 states. [2020-10-14 17:36:06,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:36:06,709 INFO L93 Difference]: Finished difference Result 68 states and 78 transitions. [2020-10-14 17:36:06,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 17:36:06,710 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 68 [2020-10-14 17:36:06,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:36:06,711 INFO L225 Difference]: With dead ends: 68 [2020-10-14 17:36:06,711 INFO L226 Difference]: Without dead ends: 40 [2020-10-14 17:36:06,712 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 23 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 17:36:06,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-14 17:36:06,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2020-10-14 17:36:06,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-14 17:36:06,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2020-10-14 17:36:06,723 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 68 [2020-10-14 17:36:06,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:36:06,724 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2020-10-14 17:36:06,724 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 17:36:06,724 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2020-10-14 17:36:06,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-14 17:36:06,727 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:36:06,728 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 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 17:36:06,728 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 17:36:06,731 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:36:06,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:36:06,732 INFO L82 PathProgramCache]: Analyzing trace with hash 1267511037, now seen corresponding path program 7 times [2020-10-14 17:36:06,732 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:36:06,732 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2005246435] [2020-10-14 17:36:06,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:36:06,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:36:06,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:06,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:06,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:06,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:08,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:11,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:36:11,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-14 17:36:11,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 17:36:11,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-14 17:36:11,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:36:11,740 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:36:11,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 17:36:11,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 64 [2020-10-14 17:36:11,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 17:36:11,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:36:11,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:36:11,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:36:11,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:11,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:36:11,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:36:11,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:36:11,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 17:36:11,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:36:11,757 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:36:11,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:36:11,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:36:11,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:36:11,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:36:11,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 17:36:11,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:36:11,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:11,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:11,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:36:11,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-14 17:36:11,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:36:11,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-14 17:36:11,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:36:11,795 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:36:11,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 17:36:11,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:36:11,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 17:36:11,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:36:11,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-14 17:36:11,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:36:11,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:11,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:11,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:36:11,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-14 17:36:11,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:36:11,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-14 17:36:11,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:36:11,908 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:36:11,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 17:36:11,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:36:11,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 17:36:11,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:36:11,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-14 17:36:11,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:36:11,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:11,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:36:11,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-14 17:36:11,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:36:11,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 17:36:11,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:36:11,941 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:36:11,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 17:36:11,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:36:11,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 17:36:11,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:36:11,954 INFO L134 CoverageAnalysis]: Checked inductivity of 498 backedges. 147 proven. 294 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-10-14 17:36:11,954 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2005246435] [2020-10-14 17:36:11,955 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:36:11,955 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 17:36:11,955 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400060403] [2020-10-14 17:36:11,956 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 17:36:11,956 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:36:11,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 17:36:11,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-14 17:36:11,956 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand 11 states. [2020-10-14 17:36:12,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:36:12,173 INFO L93 Difference]: Finished difference Result 72 states and 82 transitions. [2020-10-14 17:36:12,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 17:36:12,173 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 74 [2020-10-14 17:36:12,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:36:12,174 INFO L225 Difference]: With dead ends: 72 [2020-10-14 17:36:12,174 INFO L226 Difference]: Without dead ends: 42 [2020-10-14 17:36:12,175 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 25 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 17:36:12,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-14 17:36:12,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2020-10-14 17:36:12,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-14 17:36:12,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2020-10-14 17:36:12,188 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 74 [2020-10-14 17:36:12,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:36:12,188 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2020-10-14 17:36:12,188 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 17:36:12,189 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2020-10-14 17:36:12,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-14 17:36:12,190 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:36:12,190 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 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 17:36:12,190 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 17:36:12,190 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:36:12,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:36:12,191 INFO L82 PathProgramCache]: Analyzing trace with hash 303277307, now seen corresponding path program 8 times [2020-10-14 17:36:12,191 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:36:12,191 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1135467102] [2020-10-14 17:36:12,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:36:12,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:36:12,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:12,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:12,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:12,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:14,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:17,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:36:17,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-14 17:36:17,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 17:36:17,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 17:36:17,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:36:17,202 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:36:17,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 17:36:17,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-10-14 17:36:17,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 17:36:17,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:36:17,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:36:17,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:36:17,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:17,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:36:17,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:36:17,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:36:17,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:36:17,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:36:17,221 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:36:17,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:36:17,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:36:17,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:36:17,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:36:17,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 17:36:17,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:36:17,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:17,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:17,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:36:17,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 17:36:17,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:36:17,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-14 17:36:17,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:36:17,260 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:36:17,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 17:36:17,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:36:17,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 17:36:17,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:36:17,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 17:36:17,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:36:17,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:17,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:17,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:36:17,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 17:36:17,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:36:17,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-14 17:36:17,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:36:17,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:36:17,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 17:36:17,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:36:17,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 17:36:17,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:36:17,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-14 17:36:17,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:36:17,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:17,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:36:17,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 17:36:17,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:36:17,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 17:36:17,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:36:17,398 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:36:17,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 17:36:17,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:36:17,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 17:36:17,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:36:17,410 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 192 proven. 384 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2020-10-14 17:36:17,411 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1135467102] [2020-10-14 17:36:17,411 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:36:17,411 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 17:36:17,411 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557525953] [2020-10-14 17:36:17,412 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 17:36:17,412 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:36:17,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 17:36:17,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-14 17:36:17,413 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand 12 states. [2020-10-14 17:36:17,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:36:17,659 INFO L93 Difference]: Finished difference Result 76 states and 86 transitions. [2020-10-14 17:36:17,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 17:36:17,662 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 80 [2020-10-14 17:36:17,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:36:17,664 INFO L225 Difference]: With dead ends: 76 [2020-10-14 17:36:17,664 INFO L226 Difference]: Without dead ends: 44 [2020-10-14 17:36:17,665 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=165, Invalid=255, Unknown=0, NotChecked=0, Total=420 [2020-10-14 17:36:17,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-14 17:36:17,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2020-10-14 17:36:17,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-14 17:36:17,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2020-10-14 17:36:17,670 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 80 [2020-10-14 17:36:17,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:36:17,671 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2020-10-14 17:36:17,671 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 17:36:17,671 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2020-10-14 17:36:17,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-14 17:36:17,672 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:36:17,672 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 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 17:36:17,672 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 17:36:17,672 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:36:17,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:36:17,673 INFO L82 PathProgramCache]: Analyzing trace with hash 439379065, now seen corresponding path program 9 times [2020-10-14 17:36:17,673 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:36:17,673 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1471454835] [2020-10-14 17:36:17,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:36:17,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:36:17,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:17,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:17,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:17,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:20,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:22,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:36:22,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-14 17:36:22,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 17:36:22,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 17:36:22,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:36:22,681 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:36:22,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 17:36:22,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-14 17:36:22,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 17:36:22,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:36:22,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:36:22,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:36:22,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:22,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:36:22,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:36:22,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:36:22,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:36:22,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:36:22,698 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:36:22,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:36:22,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:36:22,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:36:22,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:36:22,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 17:36:22,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:36:22,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:22,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:22,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:36:22,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 17:36:22,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:36:22,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-14 17:36:22,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:36:22,731 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:36:22,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 17:36:22,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:36:22,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 17:36:22,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:36:22,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-14 17:36:22,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:36:22,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:22,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:22,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:36:22,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 17:36:22,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:36:22,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-14 17:36:22,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:36:22,865 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:36:22,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 17:36:22,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:36:22,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 17:36:22,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:36:22,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-14 17:36:22,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:36:22,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:22,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:36:22,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 17:36:22,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:36:22,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-14 17:36:22,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:36:22,906 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:36:22,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 17:36:22,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:36:22,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 17:36:22,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:36:22,919 INFO L134 CoverageAnalysis]: Checked inductivity of 798 backedges. 243 proven. 486 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-10-14 17:36:22,920 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1471454835] [2020-10-14 17:36:22,920 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:36:22,920 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 17:36:22,921 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126333947] [2020-10-14 17:36:22,921 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 17:36:22,921 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:36:22,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 17:36:22,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-14 17:36:22,922 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand 13 states. [2020-10-14 17:36:23,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:36:23,197 INFO L93 Difference]: Finished difference Result 80 states and 90 transitions. [2020-10-14 17:36:23,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 17:36:23,197 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 86 [2020-10-14 17:36:23,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:36:23,198 INFO L225 Difference]: With dead ends: 80 [2020-10-14 17:36:23,198 INFO L226 Difference]: Without dead ends: 46 [2020-10-14 17:36:23,200 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 29 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 17:36:23,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-14 17:36:23,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2020-10-14 17:36:23,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-14 17:36:23,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2020-10-14 17:36:23,206 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 86 [2020-10-14 17:36:23,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:36:23,206 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2020-10-14 17:36:23,206 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 17:36:23,207 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2020-10-14 17:36:23,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-14 17:36:23,207 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:36:23,208 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 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 17:36:23,208 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 17:36:23,208 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:36:23,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:36:23,208 INFO L82 PathProgramCache]: Analyzing trace with hash -825406089, now seen corresponding path program 10 times [2020-10-14 17:36:23,208 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:36:23,209 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1045644372] [2020-10-14 17:36:23,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:36:23,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:36:23,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:23,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:23,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:23,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:27,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:28,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:36:28,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-14 17:36:28,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 17:36:28,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 17:36:28,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:36:28,216 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:36:28,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 17:36:28,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-14 17:36:28,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 17:36:28,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:36:28,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:36:28,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:36:28,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:28,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:36:28,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:36:28,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:36:28,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:36:28,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:36:28,235 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:36:28,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:36:28,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:36:28,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:36:28,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:36:28,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 17:36:28,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:36:28,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:28,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:28,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:36:28,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-14 17:36:28,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:36:28,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-14 17:36:28,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:36:28,272 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:36:28,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 17:36:28,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:36:28,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 17:36:28,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:36:28,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-14 17:36:28,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:36:28,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:28,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:36:28,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-14 17:36:28,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:36:28,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-14 17:36:28,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:36:28,406 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:36:28,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 17:36:28,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:36:28,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 17:36:28,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:36:28,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-14 17:36:28,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:36:28,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:28,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:28,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:36:28,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-14 17:36:28,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:36:28,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-14 17:36:28,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:36:28,443 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:36:28,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 17:36:28,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:36:28,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 17:36:28,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:36:28,457 INFO L134 CoverageAnalysis]: Checked inductivity of 975 backedges. 300 proven. 600 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-10-14 17:36:28,458 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1045644372] [2020-10-14 17:36:28,458 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:36:28,458 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 17:36:28,458 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734371035] [2020-10-14 17:36:28,459 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 17:36:28,459 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:36:28,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 17:36:28,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-14 17:36:28,459 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand 14 states. [2020-10-14 17:36:28,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:36:28,743 INFO L93 Difference]: Finished difference Result 84 states and 94 transitions. [2020-10-14 17:36:28,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 17:36:28,744 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 92 [2020-10-14 17:36:28,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:36:28,745 INFO L225 Difference]: With dead ends: 84 [2020-10-14 17:36:28,746 INFO L226 Difference]: Without dead ends: 48 [2020-10-14 17:36:28,747 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 31 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 17:36:28,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-14 17:36:28,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2020-10-14 17:36:28,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-14 17:36:28,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2020-10-14 17:36:28,752 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 92 [2020-10-14 17:36:28,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:36:28,753 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2020-10-14 17:36:28,753 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 17:36:28,753 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2020-10-14 17:36:28,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-14 17:36:28,754 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:36:28,754 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 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 17:36:28,754 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 17:36:28,754 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:36:28,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:36:28,755 INFO L82 PathProgramCache]: Analyzing trace with hash -840122379, now seen corresponding path program 11 times [2020-10-14 17:36:28,755 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:36:28,755 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1128737627] [2020-10-14 17:36:28,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:36:28,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:36:28,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:28,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:28,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:28,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:33,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:36:33,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-14 17:36:33,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 17:36:33,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 17:36:33,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:36:33,764 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:36:33,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 17:36:33,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-14 17:36:33,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 17:36:33,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:36:33,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:36:33,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:36:33,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:33,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:36:33,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:36:33,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:36:33,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:36:33,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:36:33,780 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:36:33,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:36:33,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:36:33,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:36:33,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:36:33,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 17:36:33,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:36:33,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:33,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:33,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:36:33,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-14 17:36:33,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:36:33,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-14 17:36:33,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:36:33,820 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:36:33,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 17:36:33,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:36:33,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 17:36:33,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:36:33,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-14 17:36:33,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:36:33,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:33,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:36:33,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-14 17:36:33,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:36:33,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-14 17:36:33,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:36:33,968 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:36:33,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 17:36:33,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:36:33,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 17:36:33,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:36:33,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-14 17:36:33,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:36:33,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:33,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:34,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:36:34,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-14 17:36:34,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:36:34,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-14 17:36:34,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:36:34,008 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:36:34,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 17:36:34,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:36:34,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 17:36:34,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:36:34,019 INFO L134 CoverageAnalysis]: Checked inductivity of 1170 backedges. 363 proven. 726 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2020-10-14 17:36:34,019 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1128737627] [2020-10-14 17:36:34,019 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:36:34,019 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 17:36:34,019 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340510397] [2020-10-14 17:36:34,020 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 17:36:34,020 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:36:34,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 17:36:34,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-14 17:36:34,021 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand 15 states. [2020-10-14 17:36:34,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:36:34,314 INFO L93 Difference]: Finished difference Result 88 states and 98 transitions. [2020-10-14 17:36:34,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 17:36:34,314 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 98 [2020-10-14 17:36:34,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:36:34,315 INFO L225 Difference]: With dead ends: 88 [2020-10-14 17:36:34,316 INFO L226 Difference]: Without dead ends: 50 [2020-10-14 17:36:34,318 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=273, Invalid=429, Unknown=0, NotChecked=0, Total=702 [2020-10-14 17:36:34,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-14 17:36:34,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 49. [2020-10-14 17:36:34,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-14 17:36:34,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2020-10-14 17:36:34,328 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 98 [2020-10-14 17:36:34,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:36:34,330 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 53 transitions. [2020-10-14 17:36:34,330 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 17:36:34,330 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2020-10-14 17:36:34,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-14 17:36:34,334 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:36:34,334 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 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 17:36:34,334 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 17:36:34,335 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:36:34,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:36:34,335 INFO L82 PathProgramCache]: Analyzing trace with hash 2125011955, now seen corresponding path program 12 times [2020-10-14 17:36:34,335 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:36:34,336 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [837222128] [2020-10-14 17:36:34,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:36:34,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:36:34,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:34,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:34,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:34,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:39,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:36:39,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-14 17:36:39,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 17:36:39,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 17:36:39,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:36:39,348 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:36:39,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 17:36:39,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-14 17:36:39,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 17:36:39,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:36:39,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:36:39,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:36:39,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:39,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:36:39,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:36:39,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:36:39,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:36:39,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:36:39,369 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:36:39,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:36:39,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:36:39,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:36:39,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:36:39,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 17:36:39,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:36:39,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:39,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:39,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:36:39,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-14 17:36:39,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:36:39,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-14 17:36:39,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:36:39,413 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:36:39,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 17:36:39,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:36:39,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 17:36:39,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:36:39,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-14 17:36:39,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:36:39,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:39,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:36:39,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-14 17:36:39,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:36:39,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-14 17:36:39,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:36:39,580 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:36:39,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 17:36:39,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:36:39,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 17:36:39,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:36:39,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-14 17:36:39,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:36:39,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:39,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:39,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:36:39,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-14 17:36:39,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:36:39,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-14 17:36:39,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:36:39,629 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:36:39,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 17:36:39,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:36:39,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 17:36:39,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:36:39,646 INFO L134 CoverageAnalysis]: Checked inductivity of 1383 backedges. 432 proven. 864 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2020-10-14 17:36:39,646 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [837222128] [2020-10-14 17:36:39,646 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:36:39,646 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 17:36:39,647 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316192774] [2020-10-14 17:36:39,647 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 17:36:39,647 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:36:39,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 17:36:39,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-14 17:36:39,648 INFO L87 Difference]: Start difference. First operand 49 states and 53 transitions. Second operand 16 states. [2020-10-14 17:36:40,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:36:40,025 INFO L93 Difference]: Finished difference Result 92 states and 102 transitions. [2020-10-14 17:36:40,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 17:36:40,025 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 104 [2020-10-14 17:36:40,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:36:40,027 INFO L225 Difference]: With dead ends: 92 [2020-10-14 17:36:40,027 INFO L226 Difference]: Without dead ends: 52 [2020-10-14 17:36:40,029 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 35 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 17:36:40,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-14 17:36:40,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 51. [2020-10-14 17:36:40,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-14 17:36:40,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 55 transitions. [2020-10-14 17:36:40,049 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 55 transitions. Word has length 104 [2020-10-14 17:36:40,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:36:40,052 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 55 transitions. [2020-10-14 17:36:40,052 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 17:36:40,053 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 55 transitions. [2020-10-14 17:36:40,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-14 17:36:40,055 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:36:40,055 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 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 17:36:40,055 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 17:36:40,055 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:36:40,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:36:40,056 INFO L82 PathProgramCache]: Analyzing trace with hash 657768817, now seen corresponding path program 13 times [2020-10-14 17:36:40,056 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:36:40,057 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1251527164] [2020-10-14 17:36:40,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:36:40,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:36:40,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:40,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:40,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:40,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:45,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:36:45,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-14 17:36:45,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 17:36:45,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 17:36:45,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:36:45,073 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:36:45,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 17:36:45,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 17:36:45,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 17:36:45,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:36:45,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:36:45,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:36:45,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:45,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:36:45,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:36:45,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:36:45,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:36:45,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:36:45,090 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:36:45,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:36:45,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:36:45,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:36:45,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:36:45,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 17:36:45,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:36:45,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:45,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:36:45,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-14 17:36:45,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:36:45,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-14 17:36:45,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:36:45,151 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:36:45,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 17:36:45,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:36:45,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 17:36:45,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:36:45,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-14 17:36:45,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:36:45,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:45,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:45,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:36:45,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-14 17:36:45,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:36:45,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-14 17:36:45,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:36:45,357 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:36:45,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 17:36:45,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:36:45,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 17:36:45,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:36:45,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-14 17:36:45,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:36:45,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:45,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:45,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:36:45,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-14 17:36:45,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:36:45,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-14 17:36:45,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:36:45,420 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:36:45,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 17:36:45,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:36:45,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 17:36:45,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:36:45,440 INFO L134 CoverageAnalysis]: Checked inductivity of 1614 backedges. 507 proven. 1014 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2020-10-14 17:36:45,441 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1251527164] [2020-10-14 17:36:45,441 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:36:45,441 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 17:36:45,441 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688817615] [2020-10-14 17:36:45,442 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 17:36:45,442 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:36:45,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 17:36:45,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-14 17:36:45,443 INFO L87 Difference]: Start difference. First operand 51 states and 55 transitions. Second operand 17 states. [2020-10-14 17:36:45,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:36:45,819 INFO L93 Difference]: Finished difference Result 96 states and 106 transitions. [2020-10-14 17:36:45,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 17:36:45,820 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 110 [2020-10-14 17:36:45,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:36:45,821 INFO L225 Difference]: With dead ends: 96 [2020-10-14 17:36:45,821 INFO L226 Difference]: Without dead ends: 54 [2020-10-14 17:36:45,822 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 37 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 17:36:45,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-14 17:36:45,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 53. [2020-10-14 17:36:45,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-14 17:36:45,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 57 transitions. [2020-10-14 17:36:45,828 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 57 transitions. Word has length 110 [2020-10-14 17:36:45,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:36:45,828 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 57 transitions. [2020-10-14 17:36:45,829 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 17:36:45,829 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 57 transitions. [2020-10-14 17:36:45,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-14 17:36:45,830 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:36:45,830 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 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 17:36:45,830 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 17:36:45,830 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:36:45,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:36:45,831 INFO L82 PathProgramCache]: Analyzing trace with hash -2099638161, now seen corresponding path program 14 times [2020-10-14 17:36:45,831 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:36:45,831 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1003665323] [2020-10-14 17:36:45,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:36:45,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:36:45,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:45,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:45,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:45,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:50,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:36:50,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-14 17:36:50,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 17:36:50,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 17:36:50,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:36:50,840 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:36:50,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 17:36:50,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-14 17:36:50,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 17:36:50,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:36:50,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:36:50,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:36:50,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:50,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:36:50,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:36:50,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:36:50,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:36:50,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:36:50,858 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:36:50,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:36:50,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:36:50,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:36:50,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:36:50,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 17:36:50,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:36:50,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:50,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:50,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:36:50,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-14 17:36:50,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:36:50,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-14 17:36:50,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:36:50,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:36:50,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 17:36:50,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:36:50,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 17:36:50,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:36:51,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-14 17:36:51,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:36:51,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:51,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:36:51,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-14 17:36:51,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:36:51,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-14 17:36:51,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:36:51,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:36:51,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 17:36:51,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:36:51,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 17:36:51,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:36:51,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-14 17:36:51,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:36:51,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:51,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:51,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:36:51,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-14 17:36:51,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:36:51,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-14 17:36:51,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:36:51,162 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:36:51,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 17:36:51,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:36:51,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 17:36:51,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:36:51,176 INFO L134 CoverageAnalysis]: Checked inductivity of 1863 backedges. 588 proven. 1176 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2020-10-14 17:36:51,177 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1003665323] [2020-10-14 17:36:51,177 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:36:51,177 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-14 17:36:51,177 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386372842] [2020-10-14 17:36:51,177 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-14 17:36:51,177 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:36:51,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-14 17:36:51,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-14 17:36:51,178 INFO L87 Difference]: Start difference. First operand 53 states and 57 transitions. Second operand 18 states. [2020-10-14 17:36:51,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:36:51,581 INFO L93 Difference]: Finished difference Result 100 states and 110 transitions. [2020-10-14 17:36:51,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 17:36:51,582 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 116 [2020-10-14 17:36:51,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:36:51,583 INFO L225 Difference]: With dead ends: 100 [2020-10-14 17:36:51,583 INFO L226 Difference]: Without dead ends: 56 [2020-10-14 17:36:51,585 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=408, Invalid=648, Unknown=0, NotChecked=0, Total=1056 [2020-10-14 17:36:51,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-14 17:36:51,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 55. [2020-10-14 17:36:51,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-14 17:36:51,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 59 transitions. [2020-10-14 17:36:51,591 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 59 transitions. Word has length 116 [2020-10-14 17:36:51,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:36:51,591 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 59 transitions. [2020-10-14 17:36:51,591 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-14 17:36:51,591 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 59 transitions. [2020-10-14 17:36:51,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-14 17:36:51,593 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:36:51,593 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 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 17:36:51,593 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 17:36:51,593 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:36:51,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:36:51,594 INFO L82 PathProgramCache]: Analyzing trace with hash -671389459, now seen corresponding path program 15 times [2020-10-14 17:36:51,594 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:36:51,594 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1731729898] [2020-10-14 17:36:51,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:36:51,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:36:51,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:51,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:51,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:51,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:56,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:36:56,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-14 17:36:56,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 17:36:56,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 17:36:56,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:36:56,602 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:36:56,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 17:36:56,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-14 17:36:56,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-14 17:36:56,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:36:56,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:36:56,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:36:56,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:56,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:36:56,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:36:56,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:36:56,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:36:56,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:36:56,615 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:36:56,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:36:56,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:36:56,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:36:56,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:36:56,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 17:36:56,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:36:56,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:56,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:56,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:36:56,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-14 17:36:56,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:36:56,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-14 17:36:56,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:36:56,672 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:36:56,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 17:36:56,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:36:56,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-14 17:36:56,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:36:56,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-14 17:36:56,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:36:56,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:56,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:36:56,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-14 17:36:56,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:36:56,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-14 17:36:56,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:36:56,897 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:36:56,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 17:36:56,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:36:56,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-14 17:36:56,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:36:56,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-14 17:36:56,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:36:56,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:56,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:56,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:36:56,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-14 17:36:56,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:36:56,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-14 17:36:56,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:36:56,985 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:36:56,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 17:36:56,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:36:56,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-14 17:36:56,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:36:57,008 INFO L134 CoverageAnalysis]: Checked inductivity of 2130 backedges. 675 proven. 1350 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2020-10-14 17:36:57,008 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1731729898] [2020-10-14 17:36:57,009 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:36:57,009 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-14 17:36:57,009 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020980115] [2020-10-14 17:36:57,010 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-14 17:36:57,010 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:36:57,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-14 17:36:57,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-14 17:36:57,010 INFO L87 Difference]: Start difference. First operand 55 states and 59 transitions. Second operand 19 states. [2020-10-14 17:36:57,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:36:57,432 INFO L93 Difference]: Finished difference Result 104 states and 114 transitions. [2020-10-14 17:36:57,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 17:36:57,433 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 122 [2020-10-14 17:36:57,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:36:57,434 INFO L225 Difference]: With dead ends: 104 [2020-10-14 17:36:57,434 INFO L226 Difference]: Without dead ends: 58 [2020-10-14 17:36:57,436 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=459, Invalid=731, Unknown=0, NotChecked=0, Total=1190 [2020-10-14 17:36:57,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-14 17:36:57,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2020-10-14 17:36:57,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-14 17:36:57,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 61 transitions. [2020-10-14 17:36:57,442 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 61 transitions. Word has length 122 [2020-10-14 17:36:57,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:36:57,443 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 61 transitions. [2020-10-14 17:36:57,443 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-14 17:36:57,443 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 61 transitions. [2020-10-14 17:36:57,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-14 17:36:57,444 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:36:57,444 INFO L422 BasicCegarLoop]: trace histogram [48, 48, 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 17:36:57,445 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 17:36:57,445 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:36:57,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:36:57,445 INFO L82 PathProgramCache]: Analyzing trace with hash -1911346453, now seen corresponding path program 16 times [2020-10-14 17:36:57,445 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:36:57,446 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1330850061] [2020-10-14 17:36:57,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:36:57,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:36:57,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:57,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:57,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:36:57,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:02,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:37:02,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-14 17:37:02,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 17:37:02,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 17:37:02,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:37:02,455 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:37:02,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-14 17:37:02,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-14 17:37:02,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-14 17:37:02,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:37:02,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:37:02,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:37:02,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:02,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:37:02,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:37:02,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:37:02,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:37:02,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:37:02,470 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:37:02,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:37:02,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:37:02,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:37:02,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:37:02,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 17:37:02,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:37:02,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:02,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:02,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:37:02,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-14 17:37:02,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:37:02,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-14 17:37:02,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:37:02,537 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:37:02,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-14 17:37:02,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:37:02,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-14 17:37:02,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:37:02,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-14 17:37:02,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:37:02,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:02,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:37:02,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-14 17:37:02,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:37:02,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-14 17:37:02,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:37:02,792 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:37:02,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-14 17:37:02,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:37:02,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-14 17:37:02,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:37:02,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-14 17:37:02,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:37:02,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:02,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:02,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:37:02,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-14 17:37:02,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:37:02,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-14 17:37:02,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:37:02,863 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:37:02,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-14 17:37:02,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:37:02,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-14 17:37:02,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:37:02,879 INFO L134 CoverageAnalysis]: Checked inductivity of 2415 backedges. 768 proven. 1536 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2020-10-14 17:37:02,879 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1330850061] [2020-10-14 17:37:02,880 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:37:02,880 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-14 17:37:02,880 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139323958] [2020-10-14 17:37:02,880 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-14 17:37:02,880 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:37:02,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-14 17:37:02,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-14 17:37:02,881 INFO L87 Difference]: Start difference. First operand 57 states and 61 transitions. Second operand 20 states. [2020-10-14 17:37:03,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:37:03,312 INFO L93 Difference]: Finished difference Result 108 states and 118 transitions. [2020-10-14 17:37:03,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-14 17:37:03,313 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 128 [2020-10-14 17:37:03,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:37:03,314 INFO L225 Difference]: With dead ends: 108 [2020-10-14 17:37:03,314 INFO L226 Difference]: Without dead ends: 60 [2020-10-14 17:37:03,316 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=513, Invalid=819, Unknown=0, NotChecked=0, Total=1332 [2020-10-14 17:37:03,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-14 17:37:03,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 59. [2020-10-14 17:37:03,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-14 17:37:03,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 63 transitions. [2020-10-14 17:37:03,320 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 63 transitions. Word has length 128 [2020-10-14 17:37:03,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:37:03,320 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 63 transitions. [2020-10-14 17:37:03,321 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-14 17:37:03,321 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 63 transitions. [2020-10-14 17:37:03,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-14 17:37:03,322 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:37:03,322 INFO L422 BasicCegarLoop]: trace histogram [51, 51, 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 17:37:03,322 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 17:37:03,322 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:37:03,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:37:03,323 INFO L82 PathProgramCache]: Analyzing trace with hash 1135851113, now seen corresponding path program 17 times [2020-10-14 17:37:03,323 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:37:03,323 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [215580728] [2020-10-14 17:37:03,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:37:03,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:37:03,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:03,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:03,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:03,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:08,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:37:08,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-14 17:37:08,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 17:37:08,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 17:37:08,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:37:08,331 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:37:08,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-14 17:37:08,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-10-14 17:37:08,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-14 17:37:08,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:37:08,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:37:08,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:37:08,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:08,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:37:08,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:37:08,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:37:08,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:37:08,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:37:08,346 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:37:08,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:37:08,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:37:08,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:37:08,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:37:08,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 17:37:08,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:37:08,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:08,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:08,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:37:08,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-14 17:37:08,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:37:08,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-14 17:37:08,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:37:08,417 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:37:08,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-14 17:37:08,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:37:08,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-14 17:37:08,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:37:08,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-14 17:37:08,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:37:08,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:08,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:37:08,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-14 17:37:08,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:37:08,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-14 17:37:08,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:37:08,692 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:37:08,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-14 17:37:08,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:37:08,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-14 17:37:08,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:37:08,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-14 17:37:08,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:37:08,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:08,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:08,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:37:08,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-14 17:37:08,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:37:08,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-14 17:37:08,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:37:08,780 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:37:08,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-14 17:37:08,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:37:08,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-14 17:37:08,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:37:08,800 INFO L134 CoverageAnalysis]: Checked inductivity of 2718 backedges. 867 proven. 1734 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2020-10-14 17:37:08,800 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [215580728] [2020-10-14 17:37:08,801 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:37:08,801 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-14 17:37:08,801 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999268166] [2020-10-14 17:37:08,801 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-14 17:37:08,802 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:37:08,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-14 17:37:08,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-14 17:37:08,802 INFO L87 Difference]: Start difference. First operand 59 states and 63 transitions. Second operand 21 states. [2020-10-14 17:37:09,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:37:09,282 INFO L93 Difference]: Finished difference Result 112 states and 122 transitions. [2020-10-14 17:37:09,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-14 17:37:09,288 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 134 [2020-10-14 17:37:09,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:37:09,289 INFO L225 Difference]: With dead ends: 112 [2020-10-14 17:37:09,289 INFO L226 Difference]: Without dead ends: 62 [2020-10-14 17:37:09,291 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=570, Invalid=912, Unknown=0, NotChecked=0, Total=1482 [2020-10-14 17:37:09,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-14 17:37:09,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 61. [2020-10-14 17:37:09,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-14 17:37:09,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 65 transitions. [2020-10-14 17:37:09,300 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 65 transitions. Word has length 134 [2020-10-14 17:37:09,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:37:09,300 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 65 transitions. [2020-10-14 17:37:09,300 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-14 17:37:09,300 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 65 transitions. [2020-10-14 17:37:09,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-10-14 17:37:09,302 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:37:09,302 INFO L422 BasicCegarLoop]: trace histogram [54, 54, 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 17:37:09,305 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 17:37:09,305 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:37:09,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:37:09,306 INFO L82 PathProgramCache]: Analyzing trace with hash 1686596455, now seen corresponding path program 18 times [2020-10-14 17:37:09,306 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:37:09,306 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [950436658] [2020-10-14 17:37:09,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:37:09,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:37:09,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:09,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:09,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:09,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:14,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:37:14,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-14 17:37:14,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 17:37:14,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 17:37:14,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:37:14,326 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:37:14,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-14 17:37:14,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 17:37:14,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-14 17:37:14,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:37:14,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:37:14,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:37:14,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:14,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:37:14,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:37:14,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:37:14,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:37:14,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:37:14,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:37:14,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:37:14,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:37:14,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:37:14,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:37:14,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 17:37:14,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:37:14,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:14,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:37:14,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-14 17:37:14,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:37:14,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-14 17:37:14,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:37:14,397 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:37:14,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-14 17:37:14,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:37:14,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-14 17:37:14,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:37:14,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-14 17:37:14,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:37:14,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:14,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:14,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:37:14,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-14 17:37:14,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:37:14,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-14 17:37:14,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:37:14,704 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:37:14,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-14 17:37:14,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:37:14,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-14 17:37:14,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:37:14,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 17:37:14,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:37:14,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:14,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:14,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:37:14,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-14 17:37:14,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:37:14,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-14 17:37:14,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:37:14,784 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:37:14,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-14 17:37:14,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:37:14,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-14 17:37:14,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:37:14,815 INFO L134 CoverageAnalysis]: Checked inductivity of 3039 backedges. 972 proven. 1944 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2020-10-14 17:37:14,815 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [950436658] [2020-10-14 17:37:14,816 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:37:14,816 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-14 17:37:14,816 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891218088] [2020-10-14 17:37:14,816 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-14 17:37:14,817 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:37:14,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-14 17:37:14,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-14 17:37:14,817 INFO L87 Difference]: Start difference. First operand 61 states and 65 transitions. Second operand 22 states. [2020-10-14 17:37:15,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:37:15,377 INFO L93 Difference]: Finished difference Result 116 states and 126 transitions. [2020-10-14 17:37:15,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-14 17:37:15,379 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 140 [2020-10-14 17:37:15,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:37:15,381 INFO L225 Difference]: With dead ends: 116 [2020-10-14 17:37:15,381 INFO L226 Difference]: Without dead ends: 64 [2020-10-14 17:37:15,386 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=630, Invalid=1010, Unknown=0, NotChecked=0, Total=1640 [2020-10-14 17:37:15,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-14 17:37:15,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 63. [2020-10-14 17:37:15,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-14 17:37:15,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 67 transitions. [2020-10-14 17:37:15,397 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 67 transitions. Word has length 140 [2020-10-14 17:37:15,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:37:15,397 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 67 transitions. [2020-10-14 17:37:15,397 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-14 17:37:15,398 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 67 transitions. [2020-10-14 17:37:15,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-14 17:37:15,400 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:37:15,400 INFO L422 BasicCegarLoop]: trace histogram [57, 57, 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 17:37:15,403 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 17:37:15,403 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:37:15,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:37:15,404 INFO L82 PathProgramCache]: Analyzing trace with hash 1062250981, now seen corresponding path program 19 times [2020-10-14 17:37:15,404 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:37:15,405 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1080893295] [2020-10-14 17:37:15,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:37:15,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:37:15,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:15,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:15,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:15,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:20,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:37:20,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-14 17:37:20,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 17:37:20,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 17:37:20,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:37:20,426 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:37:20,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-14 17:37:20,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 17:37:20,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-14 17:37:20,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:37:20,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:37:20,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:37:20,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:20,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:37:20,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:37:20,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:37:20,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:37:20,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:37:20,442 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:37:20,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:37:20,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:37:20,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:37:20,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:37:20,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 17:37:20,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:37:20,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:20,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:37:20,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-14 17:37:20,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:37:20,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-14 17:37:20,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:37:20,541 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:37:20,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-14 17:37:20,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:37:20,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-14 17:37:20,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:37:20,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-14 17:37:20,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:37:20,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:20,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:20,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:37:20,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-14 17:37:20,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:37:20,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-14 17:37:20,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:37:20,890 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:37:20,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-14 17:37:20,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:37:20,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-14 17:37:20,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:37:20,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-14 17:37:20,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:37:20,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:20,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:20,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:37:20,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-14 17:37:20,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:37:20,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-14 17:37:20,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:37:20,982 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:37:20,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-14 17:37:20,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:37:20,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-14 17:37:20,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:37:21,004 INFO L134 CoverageAnalysis]: Checked inductivity of 3378 backedges. 1083 proven. 2166 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2020-10-14 17:37:21,005 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1080893295] [2020-10-14 17:37:21,005 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:37:21,005 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-14 17:37:21,005 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734552614] [2020-10-14 17:37:21,005 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-14 17:37:21,006 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:37:21,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-14 17:37:21,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-14 17:37:21,007 INFO L87 Difference]: Start difference. First operand 63 states and 67 transitions. Second operand 23 states. [2020-10-14 17:37:21,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:37:21,549 INFO L93 Difference]: Finished difference Result 120 states and 130 transitions. [2020-10-14 17:37:21,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-14 17:37:21,550 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 146 [2020-10-14 17:37:21,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:37:21,551 INFO L225 Difference]: With dead ends: 120 [2020-10-14 17:37:21,551 INFO L226 Difference]: Without dead ends: 66 [2020-10-14 17:37:21,553 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=693, Invalid=1113, Unknown=0, NotChecked=0, Total=1806 [2020-10-14 17:37:21,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-14 17:37:21,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2020-10-14 17:37:21,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-14 17:37:21,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 69 transitions. [2020-10-14 17:37:21,563 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 69 transitions. Word has length 146 [2020-10-14 17:37:21,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:37:21,564 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 69 transitions. [2020-10-14 17:37:21,564 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-14 17:37:21,564 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 69 transitions. [2020-10-14 17:37:21,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-14 17:37:21,566 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:37:21,566 INFO L422 BasicCegarLoop]: trace histogram [60, 60, 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 17:37:21,567 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-14 17:37:21,567 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:37:21,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:37:21,567 INFO L82 PathProgramCache]: Analyzing trace with hash -1679175197, now seen corresponding path program 20 times [2020-10-14 17:37:21,567 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:37:21,568 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1335232850] [2020-10-14 17:37:21,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:37:21,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:37:21,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:21,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:21,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:21,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:26,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:37:26,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-14 17:37:26,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 17:37:26,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 17:37:26,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:37:26,578 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:37:26,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-14 17:37:26,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 65 [2020-10-14 17:37:26,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-14 17:37:26,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:37:26,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:37:26,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:37:26,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:26,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:37:26,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:37:26,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:37:26,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:37:26,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:37:26,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:37:26,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:37:26,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:37:26,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:37:26,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:37:26,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 17:37:26,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:37:26,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:26,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:26,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:37:26,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-14 17:37:26,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:37:26,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-14 17:37:26,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:37:26,694 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:37:26,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-14 17:37:26,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:37:26,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-14 17:37:26,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:37:26,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-14 17:37:26,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:37:26,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:27,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:37:27,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-14 17:37:27,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:37:27,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-14 17:37:27,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:37:27,046 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:37:27,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-14 17:37:27,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:37:27,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-14 17:37:27,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:37:27,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-14 17:37:27,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:37:27,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:27,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:27,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:37:27,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-14 17:37:27,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:37:27,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-14 17:37:27,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:37:27,169 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:37:27,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-14 17:37:27,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:37:27,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-14 17:37:27,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:37:27,200 INFO L134 CoverageAnalysis]: Checked inductivity of 3735 backedges. 1200 proven. 2400 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2020-10-14 17:37:27,201 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1335232850] [2020-10-14 17:37:27,201 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:37:27,201 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-14 17:37:27,202 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212642984] [2020-10-14 17:37:27,202 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-14 17:37:27,202 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:37:27,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-14 17:37:27,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2020-10-14 17:37:27,203 INFO L87 Difference]: Start difference. First operand 65 states and 69 transitions. Second operand 24 states. [2020-10-14 17:37:27,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:37:27,799 INFO L93 Difference]: Finished difference Result 124 states and 134 transitions. [2020-10-14 17:37:27,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-14 17:37:27,800 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 152 [2020-10-14 17:37:27,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:37:27,801 INFO L225 Difference]: With dead ends: 124 [2020-10-14 17:37:27,801 INFO L226 Difference]: Without dead ends: 68 [2020-10-14 17:37:27,803 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=759, Invalid=1221, Unknown=0, NotChecked=0, Total=1980 [2020-10-14 17:37:27,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-14 17:37:27,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 67. [2020-10-14 17:37:27,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-14 17:37:27,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 71 transitions. [2020-10-14 17:37:27,808 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 71 transitions. Word has length 152 [2020-10-14 17:37:27,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:37:27,808 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 71 transitions. [2020-10-14 17:37:27,808 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-14 17:37:27,808 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 71 transitions. [2020-10-14 17:37:27,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-14 17:37:27,809 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:37:27,810 INFO L422 BasicCegarLoop]: trace histogram [63, 63, 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 17:37:27,810 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-14 17:37:27,810 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:37:27,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:37:27,811 INFO L82 PathProgramCache]: Analyzing trace with hash -783989919, now seen corresponding path program 21 times [2020-10-14 17:37:27,811 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:37:27,811 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2079892491] [2020-10-14 17:37:27,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:37:27,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:37:27,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:27,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:27,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:27,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:32,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:37:32,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-10-14 17:37:32,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 17:37:32,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 17:37:32,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:37:32,825 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:37:32,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-14 17:37:32,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-14 17:37:32,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-14 17:37:32,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:37:32,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:37:32,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:37:32,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:32,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:37:32,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:37:32,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:37:32,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:37:32,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:37:32,840 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:37:32,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:37:32,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:37:32,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:37:32,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:37:32,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 17:37:32,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:37:32,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:32,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:32,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:37:32,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-14 17:37:32,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:37:32,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-14 17:37:32,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:37:32,954 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:37:32,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-14 17:37:32,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:37:32,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-14 17:37:32,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:37:33,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-14 17:37:33,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:37:33,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:33,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:37:33,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-14 17:37:33,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:37:33,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-14 17:37:33,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:37:33,349 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:37:33,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-14 17:37:33,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:37:33,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-14 17:37:33,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:37:33,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-14 17:37:33,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:37:33,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:33,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:33,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:37:33,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-14 17:37:33,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:37:33,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-14 17:37:33,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:37:33,484 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:37:33,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-14 17:37:33,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:37:33,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-14 17:37:33,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:37:33,510 INFO L134 CoverageAnalysis]: Checked inductivity of 4110 backedges. 1323 proven. 2646 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2020-10-14 17:37:33,510 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2079892491] [2020-10-14 17:37:33,510 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:37:33,510 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-14 17:37:33,510 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525990232] [2020-10-14 17:37:33,511 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-14 17:37:33,511 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:37:33,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-14 17:37:33,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2020-10-14 17:37:33,512 INFO L87 Difference]: Start difference. First operand 67 states and 71 transitions. Second operand 25 states. [2020-10-14 17:37:34,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:37:34,150 INFO L93 Difference]: Finished difference Result 128 states and 138 transitions. [2020-10-14 17:37:34,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-14 17:37:34,150 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 158 [2020-10-14 17:37:34,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:37:34,151 INFO L225 Difference]: With dead ends: 128 [2020-10-14 17:37:34,151 INFO L226 Difference]: Without dead ends: 70 [2020-10-14 17:37:34,153 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=828, Invalid=1334, Unknown=0, NotChecked=0, Total=2162 [2020-10-14 17:37:34,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-14 17:37:34,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 69. [2020-10-14 17:37:34,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-14 17:37:34,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 73 transitions. [2020-10-14 17:37:34,158 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 73 transitions. Word has length 158 [2020-10-14 17:37:34,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:37:34,158 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 73 transitions. [2020-10-14 17:37:34,158 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-14 17:37:34,159 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 73 transitions. [2020-10-14 17:37:34,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-10-14 17:37:34,160 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:37:34,160 INFO L422 BasicCegarLoop]: trace histogram [66, 66, 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 17:37:34,160 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-14 17:37:34,161 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:37:34,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:37:34,161 INFO L82 PathProgramCache]: Analyzing trace with hash 1533894239, now seen corresponding path program 22 times [2020-10-14 17:37:34,161 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:37:34,161 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [925243455] [2020-10-14 17:37:34,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:37:34,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:37:34,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:34,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:34,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:34,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:39,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:37:39,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-14 17:37:39,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 17:37:39,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 17:37:39,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:37:39,174 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:37:39,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-14 17:37:39,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 17:37:39,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-14 17:37:39,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:37:39,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:37:39,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:37:39,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:39,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:37:39,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:37:39,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:37:39,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:37:39,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:37:39,189 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:37:39,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:37:39,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:37:39,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:37:39,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:37:39,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 17:37:39,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:37:39,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:39,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:37:39,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-14 17:37:39,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:37:39,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-14 17:37:39,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:37:39,272 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:37:39,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-14 17:37:39,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:37:39,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-14 17:37:39,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:37:39,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-14 17:37:39,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:37:39,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:39,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:39,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:37:39,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-14 17:37:39,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:37:39,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-14 17:37:39,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:37:39,709 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:37:39,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-14 17:37:39,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:37:39,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-14 17:37:39,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:37:39,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-14 17:37:39,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:37:39,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:39,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:39,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:37:39,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-14 17:37:39,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:37:39,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-14 17:37:39,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:37:39,824 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:37:39,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-14 17:37:39,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:37:39,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-14 17:37:39,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:37:39,851 INFO L134 CoverageAnalysis]: Checked inductivity of 4503 backedges. 1452 proven. 2904 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2020-10-14 17:37:39,851 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [925243455] [2020-10-14 17:37:39,852 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:37:39,852 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-14 17:37:39,852 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203223835] [2020-10-14 17:37:39,853 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-14 17:37:39,853 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:37:39,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-14 17:37:39,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2020-10-14 17:37:39,854 INFO L87 Difference]: Start difference. First operand 69 states and 73 transitions. Second operand 26 states. [2020-10-14 17:37:40,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:37:40,494 INFO L93 Difference]: Finished difference Result 132 states and 142 transitions. [2020-10-14 17:37:40,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-14 17:37:40,495 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 164 [2020-10-14 17:37:40,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:37:40,495 INFO L225 Difference]: With dead ends: 132 [2020-10-14 17:37:40,496 INFO L226 Difference]: Without dead ends: 72 [2020-10-14 17:37:40,497 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=900, Invalid=1452, Unknown=0, NotChecked=0, Total=2352 [2020-10-14 17:37:40,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-14 17:37:40,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 71. [2020-10-14 17:37:40,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-14 17:37:40,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 75 transitions. [2020-10-14 17:37:40,502 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 75 transitions. Word has length 164 [2020-10-14 17:37:40,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:37:40,502 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 75 transitions. [2020-10-14 17:37:40,502 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-14 17:37:40,502 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 75 transitions. [2020-10-14 17:37:40,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-14 17:37:40,503 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:37:40,503 INFO L422 BasicCegarLoop]: trace histogram [69, 69, 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 17:37:40,503 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-14 17:37:40,504 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:37:40,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:37:40,504 INFO L82 PathProgramCache]: Analyzing trace with hash -242973987, now seen corresponding path program 23 times [2020-10-14 17:37:40,504 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:37:40,504 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [939830496] [2020-10-14 17:37:40,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:37:40,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:37:40,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:40,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:40,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:40,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:45,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:37:45,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-10-14 17:37:45,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 17:37:45,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 17:37:45,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:37:45,519 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:37:45,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-14 17:37:45,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-14 17:37:45,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-14 17:37:45,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:37:45,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:37:45,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:37:45,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:45,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:37:45,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:37:45,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:37:45,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:37:45,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:37:45,537 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:37:45,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:37:45,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:37:45,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:37:45,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:37:45,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 17:37:45,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:37:45,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:45,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:45,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:37:45,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-14 17:37:45,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:37:45,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-14 17:37:45,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:37:45,661 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:37:45,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-14 17:37:45,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:37:45,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-14 17:37:45,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:37:46,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-14 17:37:46,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:37:46,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:46,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:37:46,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-14 17:37:46,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:37:46,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-14 17:37:46,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:37:46,109 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:37:46,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-14 17:37:46,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:37:46,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-14 17:37:46,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:37:46,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-10-14 17:37:46,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:37:46,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:46,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:46,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:37:46,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-14 17:37:46,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:37:46,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 195 [2020-10-14 17:37:46,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:37:46,326 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:37:46,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-14 17:37:46,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:37:46,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-14 17:37:46,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:37:46,410 INFO L134 CoverageAnalysis]: Checked inductivity of 4914 backedges. 1587 proven. 3174 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2020-10-14 17:37:46,411 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [939830496] [2020-10-14 17:37:46,411 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:37:46,411 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-14 17:37:46,411 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631131281] [2020-10-14 17:37:46,412 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-14 17:37:46,412 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:37:46,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-14 17:37:46,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2020-10-14 17:37:46,414 INFO L87 Difference]: Start difference. First operand 71 states and 75 transitions. Second operand 27 states. [2020-10-14 17:37:47,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:37:47,348 INFO L93 Difference]: Finished difference Result 136 states and 146 transitions. [2020-10-14 17:37:47,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-14 17:37:47,349 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 170 [2020-10-14 17:37:47,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:37:47,350 INFO L225 Difference]: With dead ends: 136 [2020-10-14 17:37:47,350 INFO L226 Difference]: Without dead ends: 74 [2020-10-14 17:37:47,351 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=975, Invalid=1575, Unknown=0, NotChecked=0, Total=2550 [2020-10-14 17:37:47,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-14 17:37:47,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 73. [2020-10-14 17:37:47,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-14 17:37:47,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 77 transitions. [2020-10-14 17:37:47,364 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 77 transitions. Word has length 170 [2020-10-14 17:37:47,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:37:47,364 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 77 transitions. [2020-10-14 17:37:47,365 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-14 17:37:47,365 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 77 transitions. [2020-10-14 17:37:47,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-10-14 17:37:47,366 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:37:47,366 INFO L422 BasicCegarLoop]: trace histogram [72, 72, 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 17:37:47,366 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-14 17:37:47,367 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:37:47,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:37:47,369 INFO L82 PathProgramCache]: Analyzing trace with hash 465899739, now seen corresponding path program 24 times [2020-10-14 17:37:47,369 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:37:47,370 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [120711079] [2020-10-14 17:37:47,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:37:47,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:37:47,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:47,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:47,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:47,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:52,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:37:52,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 188 [2020-10-14 17:37:52,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 17:37:52,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-14 17:37:52,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:37:52,395 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:37:52,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-14 17:37:52,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-14 17:37:52,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-14 17:37:52,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:37:52,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:37:52,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:37:52,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:52,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:37:52,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:37:52,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:37:52,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:37:52,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:37:52,421 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:37:52,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:37:52,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:37:52,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:37:52,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:37:52,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 17:37:52,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:37:52,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:52,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:52,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:37:52,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-14 17:37:52,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:37:52,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 221 [2020-10-14 17:37:52,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:37:52,648 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:37:52,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-14 17:37:52,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:37:52,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-14 17:37:52,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:37:53,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-14 17:37:53,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:37:53,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:53,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:37:53,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-14 17:37:53,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:37:53,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 208 [2020-10-14 17:37:53,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:37:53,392 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:37:53,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-14 17:37:53,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:37:53,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-14 17:37:53,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:37:53,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-14 17:37:53,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:37:53,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:53,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:53,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:37:53,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-14 17:37:53,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:37:53,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 193 [2020-10-14 17:37:53,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:37:53,608 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:37:53,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-14 17:37:53,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:37:53,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-14 17:37:53,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:37:53,652 INFO L134 CoverageAnalysis]: Checked inductivity of 5343 backedges. 1728 proven. 3456 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2020-10-14 17:37:53,652 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [120711079] [2020-10-14 17:37:53,653 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:37:53,653 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-14 17:37:53,653 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632262357] [2020-10-14 17:37:53,655 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-14 17:37:53,655 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:37:53,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-14 17:37:53,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2020-10-14 17:37:53,656 INFO L87 Difference]: Start difference. First operand 73 states and 77 transitions. Second operand 28 states. [2020-10-14 17:37:54,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:37:54,426 INFO L93 Difference]: Finished difference Result 140 states and 150 transitions. [2020-10-14 17:37:54,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-14 17:37:54,426 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 176 [2020-10-14 17:37:54,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:37:54,427 INFO L225 Difference]: With dead ends: 140 [2020-10-14 17:37:54,427 INFO L226 Difference]: Without dead ends: 76 [2020-10-14 17:37:54,429 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1053, Invalid=1703, Unknown=0, NotChecked=0, Total=2756 [2020-10-14 17:37:54,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-14 17:37:54,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 75. [2020-10-14 17:37:54,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-14 17:37:54,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 79 transitions. [2020-10-14 17:37:54,434 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 79 transitions. Word has length 176 [2020-10-14 17:37:54,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:37:54,435 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 79 transitions. [2020-10-14 17:37:54,435 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-14 17:37:54,435 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 79 transitions. [2020-10-14 17:37:54,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-10-14 17:37:54,436 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:37:54,436 INFO L422 BasicCegarLoop]: trace histogram [75, 75, 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 17:37:54,437 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-14 17:37:54,437 INFO L427 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:37:54,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:37:54,437 INFO L82 PathProgramCache]: Analyzing trace with hash 1233217625, now seen corresponding path program 25 times [2020-10-14 17:37:54,437 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:37:54,438 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1543008770] [2020-10-14 17:37:54,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:37:54,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:37:54,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:54,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:54,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:54,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:59,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:37:59,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-14 17:37:59,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 17:37:59,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 17:37:59,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:37:59,449 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:37:59,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-14 17:37:59,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 17:37:59,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-14 17:37:59,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:37:59,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:37:59,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:37:59,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:59,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:37:59,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:37:59,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:37:59,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:37:59,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:37:59,465 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:37:59,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:37:59,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:37:59,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:37:59,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:37:59,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 17:37:59,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:37:59,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:37:59,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:37:59,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-14 17:37:59,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:37:59,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-14 17:37:59,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:37:59,566 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:37:59,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-14 17:37:59,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:37:59,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-14 17:37:59,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:37:59,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-14 17:37:59,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:38:00,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:00,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:00,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:38:00,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-14 17:38:00,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:38:00,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-14 17:38:00,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:38:00,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:38:00,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-14 17:38:00,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:38:00,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-14 17:38:00,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:38:00,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-14 17:38:00,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:38:00,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:00,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:00,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:38:00,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-14 17:38:00,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:38:00,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-14 17:38:00,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:38:00,203 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:38:00,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-14 17:38:00,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:38:00,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-14 17:38:00,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:38:00,234 INFO L134 CoverageAnalysis]: Checked inductivity of 5790 backedges. 1875 proven. 3750 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2020-10-14 17:38:00,234 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1543008770] [2020-10-14 17:38:00,234 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:38:00,234 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-14 17:38:00,234 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074604930] [2020-10-14 17:38:00,235 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-14 17:38:00,235 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:38:00,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-14 17:38:00,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2020-10-14 17:38:00,236 INFO L87 Difference]: Start difference. First operand 75 states and 79 transitions. Second operand 29 states. [2020-10-14 17:38:01,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:38:01,074 INFO L93 Difference]: Finished difference Result 144 states and 154 transitions. [2020-10-14 17:38:01,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-14 17:38:01,074 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 182 [2020-10-14 17:38:01,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:38:01,076 INFO L225 Difference]: With dead ends: 144 [2020-10-14 17:38:01,076 INFO L226 Difference]: Without dead ends: 78 [2020-10-14 17:38:01,078 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1134, Invalid=1836, Unknown=0, NotChecked=0, Total=2970 [2020-10-14 17:38:01,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-10-14 17:38:01,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 77. [2020-10-14 17:38:01,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-14 17:38:01,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 81 transitions. [2020-10-14 17:38:01,087 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 81 transitions. Word has length 182 [2020-10-14 17:38:01,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:38:01,088 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 81 transitions. [2020-10-14 17:38:01,088 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-14 17:38:01,088 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 81 transitions. [2020-10-14 17:38:01,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-10-14 17:38:01,089 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:38:01,089 INFO L422 BasicCegarLoop]: trace histogram [78, 78, 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 17:38:01,089 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-14 17:38:01,089 INFO L427 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:38:01,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:38:01,090 INFO L82 PathProgramCache]: Analyzing trace with hash 1730406743, now seen corresponding path program 26 times [2020-10-14 17:38:01,090 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:38:01,090 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [882393024] [2020-10-14 17:38:01,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:38:01,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:38:01,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:01,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:01,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:01,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:06,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:38:06,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-10-14 17:38:06,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 17:38:06,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 17:38:06,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:38:06,098 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:38:06,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-14 17:38:06,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 17:38:06,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-14 17:38:06,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:38:06,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:38:06,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:38:06,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:06,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:38:06,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:38:06,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:38:06,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:38:06,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:38:06,111 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:38:06,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:38:06,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:38:06,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:38:06,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:38:06,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 17:38:06,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:38:06,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:06,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:38:06,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-14 17:38:06,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:38:06,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-14 17:38:06,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:38:06,218 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:38:06,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-14 17:38:06,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:38:06,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-14 17:38:06,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:38:06,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-14 17:38:06,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:38:06,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:06,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:06,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:38:06,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-14 17:38:06,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:38:06,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-14 17:38:06,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:38:06,776 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:38:06,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-14 17:38:06,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:38:06,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-14 17:38:06,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:38:06,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-14 17:38:06,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:38:06,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:06,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:06,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:38:06,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-14 17:38:06,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:38:06,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-10-14 17:38:06,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:38:06,948 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:38:06,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-14 17:38:06,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:38:06,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-14 17:38:06,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:38:07,006 INFO L134 CoverageAnalysis]: Checked inductivity of 6255 backedges. 2028 proven. 4056 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2020-10-14 17:38:07,007 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [882393024] [2020-10-14 17:38:07,007 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:38:07,007 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-14 17:38:07,007 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127846060] [2020-10-14 17:38:07,008 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-14 17:38:07,008 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:38:07,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-14 17:38:07,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2020-10-14 17:38:07,009 INFO L87 Difference]: Start difference. First operand 77 states and 81 transitions. Second operand 30 states. [2020-10-14 17:38:07,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:38:07,895 INFO L93 Difference]: Finished difference Result 148 states and 158 transitions. [2020-10-14 17:38:07,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-14 17:38:07,895 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 188 [2020-10-14 17:38:07,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:38:07,896 INFO L225 Difference]: With dead ends: 148 [2020-10-14 17:38:07,896 INFO L226 Difference]: Without dead ends: 80 [2020-10-14 17:38:07,898 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 351 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1218, Invalid=1974, Unknown=0, NotChecked=0, Total=3192 [2020-10-14 17:38:07,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-14 17:38:07,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 79. [2020-10-14 17:38:07,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-14 17:38:07,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 83 transitions. [2020-10-14 17:38:07,904 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 83 transitions. Word has length 188 [2020-10-14 17:38:07,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:38:07,904 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 83 transitions. [2020-10-14 17:38:07,904 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-14 17:38:07,904 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 83 transitions. [2020-10-14 17:38:07,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-10-14 17:38:07,906 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:38:07,906 INFO L422 BasicCegarLoop]: trace histogram [81, 81, 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 17:38:07,906 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-14 17:38:07,906 INFO L427 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:38:07,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:38:07,906 INFO L82 PathProgramCache]: Analyzing trace with hash -198249515, now seen corresponding path program 27 times [2020-10-14 17:38:07,907 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:38:07,907 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2120467231] [2020-10-14 17:38:07,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:38:07,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:38:07,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:07,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:07,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:08,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:12,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:38:12,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 206 [2020-10-14 17:38:12,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 17:38:12,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 17:38:12,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:38:12,920 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:38:12,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-14 17:38:12,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-14 17:38:12,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-14 17:38:12,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:38:12,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:38:12,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:38:12,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:12,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:38:12,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:38:12,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:38:12,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:38:12,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:38:12,939 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:38:12,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:38:12,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:38:12,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:38:12,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:38:12,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 17:38:12,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:38:12,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:12,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:13,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:38:13,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-14 17:38:13,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:38:13,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 214 [2020-10-14 17:38:13,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:38:13,157 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:38:13,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-14 17:38:13,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:38:13,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-14 17:38:13,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:38:13,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-14 17:38:13,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:38:13,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:13,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:38:13,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-14 17:38:13,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:38:13,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 194 [2020-10-14 17:38:13,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:38:13,841 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:38:13,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-14 17:38:13,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:38:13,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-14 17:38:13,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:38:13,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-14 17:38:13,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:38:13,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:13,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:14,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:38:14,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-14 17:38:14,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:38:14,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-10-14 17:38:14,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:38:14,018 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:38:14,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-14 17:38:14,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:38:14,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-14 17:38:14,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:38:14,063 INFO L134 CoverageAnalysis]: Checked inductivity of 6738 backedges. 2187 proven. 4374 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2020-10-14 17:38:14,064 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2120467231] [2020-10-14 17:38:14,064 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:38:14,064 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-14 17:38:14,064 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114705486] [2020-10-14 17:38:14,064 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-14 17:38:14,065 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:38:14,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-14 17:38:14,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2020-10-14 17:38:14,065 INFO L87 Difference]: Start difference. First operand 79 states and 83 transitions. Second operand 31 states. [2020-10-14 17:38:14,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:38:14,905 INFO L93 Difference]: Finished difference Result 152 states and 162 transitions. [2020-10-14 17:38:14,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-14 17:38:14,906 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 194 [2020-10-14 17:38:14,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:38:14,907 INFO L225 Difference]: With dead ends: 152 [2020-10-14 17:38:14,907 INFO L226 Difference]: Without dead ends: 82 [2020-10-14 17:38:14,910 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 378 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1305, Invalid=2117, Unknown=0, NotChecked=0, Total=3422 [2020-10-14 17:38:14,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-10-14 17:38:14,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 81. [2020-10-14 17:38:14,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-14 17:38:14,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 85 transitions. [2020-10-14 17:38:14,915 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 85 transitions. Word has length 194 [2020-10-14 17:38:14,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:38:14,915 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 85 transitions. [2020-10-14 17:38:14,915 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-14 17:38:14,915 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 85 transitions. [2020-10-14 17:38:14,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-10-14 17:38:14,917 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:38:14,917 INFO L422 BasicCegarLoop]: trace histogram [84, 84, 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 17:38:14,917 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-14 17:38:14,917 INFO L427 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:38:14,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:38:14,918 INFO L82 PathProgramCache]: Analyzing trace with hash -1724061741, now seen corresponding path program 28 times [2020-10-14 17:38:14,918 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:38:14,918 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1186364044] [2020-10-14 17:38:14,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:38:14,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:38:14,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:14,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:14,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:14,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:19,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:38:19,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 212 [2020-10-14 17:38:19,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 17:38:19,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-14 17:38:19,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:38:19,936 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:38:19,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-14 17:38:19,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 17:38:19,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-14 17:38:19,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:38:19,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:38:19,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:38:19,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:19,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:38:19,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:38:19,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:38:19,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:38:19,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:38:19,966 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:38:19,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:38:19,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:38:19,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:38:19,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:38:19,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 17:38:19,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:38:19,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:20,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:38:20,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-14 17:38:20,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:38:20,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-14 17:38:20,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:38:20,086 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:38:20,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-14 17:38:20,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:38:20,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-14 17:38:20,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:38:20,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-14 17:38:20,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:38:20,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:20,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:20,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:38:20,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-14 17:38:20,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:38:20,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 197 [2020-10-14 17:38:20,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:38:20,794 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:38:20,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-14 17:38:20,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:38:20,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-14 17:38:20,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:38:20,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-14 17:38:20,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:38:20,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:20,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:21,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:38:21,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-14 17:38:21,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:38:21,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 273 [2020-10-14 17:38:21,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:38:21,097 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:38:21,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-14 17:38:21,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:38:21,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-14 17:38:21,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:38:21,184 INFO L134 CoverageAnalysis]: Checked inductivity of 7239 backedges. 2352 proven. 4704 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2020-10-14 17:38:21,184 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1186364044] [2020-10-14 17:38:21,184 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:38:21,185 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-14 17:38:21,185 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017125370] [2020-10-14 17:38:21,186 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-14 17:38:21,186 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:38:21,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-14 17:38:21,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992 [2020-10-14 17:38:21,187 INFO L87 Difference]: Start difference. First operand 81 states and 85 transitions. Second operand 32 states. [2020-10-14 17:38:22,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:38:22,151 INFO L93 Difference]: Finished difference Result 156 states and 166 transitions. [2020-10-14 17:38:22,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-14 17:38:22,152 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 200 [2020-10-14 17:38:22,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:38:22,153 INFO L225 Difference]: With dead ends: 156 [2020-10-14 17:38:22,153 INFO L226 Difference]: Without dead ends: 84 [2020-10-14 17:38:22,155 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 406 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1395, Invalid=2265, Unknown=0, NotChecked=0, Total=3660 [2020-10-14 17:38:22,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-14 17:38:22,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 83. [2020-10-14 17:38:22,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-14 17:38:22,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 87 transitions. [2020-10-14 17:38:22,160 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 87 transitions. Word has length 200 [2020-10-14 17:38:22,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:38:22,160 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 87 transitions. [2020-10-14 17:38:22,160 INFO L480 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-14 17:38:22,160 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 87 transitions. [2020-10-14 17:38:22,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2020-10-14 17:38:22,162 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:38:22,162 INFO L422 BasicCegarLoop]: trace histogram [87, 87, 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 17:38:22,162 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-14 17:38:22,162 INFO L427 AbstractCegarLoop]: === Iteration 30 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:38:22,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:38:22,162 INFO L82 PathProgramCache]: Analyzing trace with hash 1040196945, now seen corresponding path program 29 times [2020-10-14 17:38:22,163 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:38:22,163 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1926582813] [2020-10-14 17:38:22,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:38:22,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:38:22,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:22,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:22,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:22,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:27,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:38:27,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 218 [2020-10-14 17:38:27,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 17:38:27,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 17:38:27,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:38:27,176 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:38:27,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-14 17:38:27,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 17:38:27,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-14 17:38:27,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:38:27,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:38:27,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:38:27,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:27,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:38:27,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:38:27,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:38:27,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:38:27,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:38:27,189 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:38:27,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:38:27,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:38:27,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:38:27,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:38:27,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 17:38:27,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:38:27,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:27,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:38:27,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-14 17:38:27,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:38:27,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-14 17:38:27,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:38:27,316 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:38:27,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-14 17:38:27,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:38:27,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-14 17:38:27,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:38:27,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-14 17:38:27,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:38:27,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:27,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:27,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:38:27,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-14 17:38:27,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:38:27,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-10-14 17:38:28,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:38:28,000 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:38:28,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-14 17:38:28,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:38:28,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-14 17:38:28,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:38:28,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-14 17:38:28,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:38:28,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:28,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:28,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:38:28,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-14 17:38:28,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:38:28,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-14 17:38:28,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:38:28,152 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:38:28,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-14 17:38:28,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:38:28,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-14 17:38:28,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:38:28,189 INFO L134 CoverageAnalysis]: Checked inductivity of 7758 backedges. 2523 proven. 5046 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2020-10-14 17:38:28,189 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1926582813] [2020-10-14 17:38:28,190 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:38:28,190 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-10-14 17:38:28,190 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504988725] [2020-10-14 17:38:28,190 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-10-14 17:38:28,191 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:38:28,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-10-14 17:38:28,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2020-10-14 17:38:28,191 INFO L87 Difference]: Start difference. First operand 83 states and 87 transitions. Second operand 33 states. [2020-10-14 17:38:29,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:38:29,206 INFO L93 Difference]: Finished difference Result 160 states and 170 transitions. [2020-10-14 17:38:29,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-14 17:38:29,207 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 206 [2020-10-14 17:38:29,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:38:29,208 INFO L225 Difference]: With dead ends: 160 [2020-10-14 17:38:29,208 INFO L226 Difference]: Without dead ends: 86 [2020-10-14 17:38:29,210 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1488, Invalid=2418, Unknown=0, NotChecked=0, Total=3906 [2020-10-14 17:38:29,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-14 17:38:29,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 85. [2020-10-14 17:38:29,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-14 17:38:29,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 89 transitions. [2020-10-14 17:38:29,217 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 89 transitions. Word has length 206 [2020-10-14 17:38:29,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:38:29,217 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 89 transitions. [2020-10-14 17:38:29,217 INFO L480 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-10-14 17:38:29,217 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 89 transitions. [2020-10-14 17:38:29,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-10-14 17:38:29,218 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:38:29,218 INFO L422 BasicCegarLoop]: trace histogram [90, 90, 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 17:38:29,219 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-14 17:38:29,219 INFO L427 AbstractCegarLoop]: === Iteration 31 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:38:29,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:38:29,219 INFO L82 PathProgramCache]: Analyzing trace with hash -1622995889, now seen corresponding path program 30 times [2020-10-14 17:38:29,219 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:38:29,220 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1734774670] [2020-10-14 17:38:29,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:38:29,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:38:29,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:29,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:29,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:29,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:34,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:38:34,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-14 17:38:34,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 17:38:34,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 17:38:34,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:38:34,234 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:38:34,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-14 17:38:34,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-14 17:38:34,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-14 17:38:34,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:38:34,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:38:34,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:38:34,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:34,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:38:34,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:38:34,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:38:34,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:38:34,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:38:34,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:38:34,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:38:34,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:38:34,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:38:34,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:38:34,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 17:38:34,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:38:34,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:34,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:34,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:38:34,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 17:38:34,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:38:34,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-14 17:38:34,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:38:34,392 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:38:34,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-14 17:38:34,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:38:34,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-14 17:38:34,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:38:34,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-14 17:38:34,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:38:34,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:35,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:38:35,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 17:38:35,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:38:35,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-14 17:38:35,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:38:35,095 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:38:35,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-14 17:38:35,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:38:35,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-14 17:38:35,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:38:35,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-10-14 17:38:35,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:38:35,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:35,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:35,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:38:35,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 17:38:35,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:38:35,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-10-14 17:38:35,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:38:35,246 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:38:35,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-14 17:38:35,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:38:35,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-14 17:38:35,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:38:35,284 INFO L134 CoverageAnalysis]: Checked inductivity of 8295 backedges. 2700 proven. 5400 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2020-10-14 17:38:35,284 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1734774670] [2020-10-14 17:38:35,285 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:38:35,285 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-10-14 17:38:35,285 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701482676] [2020-10-14 17:38:35,285 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-14 17:38:35,285 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:38:35,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-14 17:38:35,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2020-10-14 17:38:35,286 INFO L87 Difference]: Start difference. First operand 85 states and 89 transitions. Second operand 34 states. [2020-10-14 17:38:36,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:38:36,351 INFO L93 Difference]: Finished difference Result 164 states and 174 transitions. [2020-10-14 17:38:36,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-14 17:38:36,352 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 212 [2020-10-14 17:38:36,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:38:36,353 INFO L225 Difference]: With dead ends: 164 [2020-10-14 17:38:36,353 INFO L226 Difference]: Without dead ends: 88 [2020-10-14 17:38:36,355 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 465 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1584, Invalid=2576, Unknown=0, NotChecked=0, Total=4160 [2020-10-14 17:38:36,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-10-14 17:38:36,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 87. [2020-10-14 17:38:36,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-10-14 17:38:36,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 91 transitions. [2020-10-14 17:38:36,359 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 91 transitions. Word has length 212 [2020-10-14 17:38:36,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:38:36,359 INFO L479 AbstractCegarLoop]: Abstraction has 87 states and 91 transitions. [2020-10-14 17:38:36,360 INFO L480 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-10-14 17:38:36,360 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 91 transitions. [2020-10-14 17:38:36,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2020-10-14 17:38:36,361 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:38:36,361 INFO L422 BasicCegarLoop]: trace histogram [93, 93, 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 17:38:36,361 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-14 17:38:36,362 INFO L427 AbstractCegarLoop]: === Iteration 32 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:38:36,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:38:36,362 INFO L82 PathProgramCache]: Analyzing trace with hash 1692925133, now seen corresponding path program 31 times [2020-10-14 17:38:36,362 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:38:36,362 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1069228384] [2020-10-14 17:38:36,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:38:36,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:38:36,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:36,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:36,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:36,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:41,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:38:41,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 230 [2020-10-14 17:38:41,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 17:38:41,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 17:38:41,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:38:41,375 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:38:41,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-14 17:38:41,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 87 [2020-10-14 17:38:41,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-14 17:38:41,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:38:41,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:38:41,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:38:41,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:41,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:38:41,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:38:41,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:38:41,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:38:41,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:38:41,392 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:38:41,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:38:41,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:38:41,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:38:41,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:38:41,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 17:38:41,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:38:41,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:41,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:41,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:38:41,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 17:38:41,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:38:41,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-10-14 17:38:41,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:38:41,553 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:38:41,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-14 17:38:41,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:38:41,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-14 17:38:41,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:38:42,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-14 17:38:42,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:38:42,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:42,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:38:42,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 17:38:42,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:38:42,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-14 17:38:42,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:38:42,309 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:38:42,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-14 17:38:42,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:38:42,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-14 17:38:42,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:38:42,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-10-14 17:38:42,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:38:42,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:42,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:42,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:38:42,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 17:38:42,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:38:42,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-14 17:38:42,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:38:42,468 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:38:42,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-14 17:38:42,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:38:42,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-14 17:38:42,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:38:42,523 INFO L134 CoverageAnalysis]: Checked inductivity of 8850 backedges. 2883 proven. 5766 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2020-10-14 17:38:42,523 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1069228384] [2020-10-14 17:38:42,524 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:38:42,524 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2020-10-14 17:38:42,524 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716471390] [2020-10-14 17:38:42,525 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-10-14 17:38:42,525 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:38:42,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-10-14 17:38:42,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190 [2020-10-14 17:38:42,526 INFO L87 Difference]: Start difference. First operand 87 states and 91 transitions. Second operand 35 states. [2020-10-14 17:38:43,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:38:43,570 INFO L93 Difference]: Finished difference Result 168 states and 178 transitions. [2020-10-14 17:38:43,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-14 17:38:43,570 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 218 [2020-10-14 17:38:43,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:38:43,571 INFO L225 Difference]: With dead ends: 168 [2020-10-14 17:38:43,571 INFO L226 Difference]: Without dead ends: 90 [2020-10-14 17:38:43,573 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 496 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1683, Invalid=2739, Unknown=0, NotChecked=0, Total=4422 [2020-10-14 17:38:43,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-10-14 17:38:43,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 89. [2020-10-14 17:38:43,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-10-14 17:38:43,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 93 transitions. [2020-10-14 17:38:43,584 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 93 transitions. Word has length 218 [2020-10-14 17:38:43,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:38:43,584 INFO L479 AbstractCegarLoop]: Abstraction has 89 states and 93 transitions. [2020-10-14 17:38:43,584 INFO L480 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-10-14 17:38:43,584 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 93 transitions. [2020-10-14 17:38:43,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2020-10-14 17:38:43,585 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:38:43,586 INFO L422 BasicCegarLoop]: trace histogram [96, 96, 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 17:38:43,586 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-14 17:38:43,586 INFO L427 AbstractCegarLoop]: === Iteration 33 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:38:43,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:38:43,586 INFO L82 PathProgramCache]: Analyzing trace with hash -1209444661, now seen corresponding path program 32 times [2020-10-14 17:38:43,587 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:38:43,587 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1430740916] [2020-10-14 17:38:43,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:38:43,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:38:43,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:43,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:43,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:43,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:48,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:38:48,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 236 [2020-10-14 17:38:48,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 17:38:48,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 17:38:48,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:38:48,608 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:38:48,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-14 17:38:48,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 17:38:48,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-14 17:38:48,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:38:48,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:38:48,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:38:48,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:48,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:38:48,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:38:48,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:38:48,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:38:48,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:38:48,622 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:38:48,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:38:48,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:38:48,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:38:48,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:38:48,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 17:38:48,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:38:48,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:48,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:38:48,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 17:38:48,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:38:48,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-10-14 17:38:48,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:38:48,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:38:48,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-14 17:38:48,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:38:48,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-14 17:38:48,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:38:49,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-14 17:38:49,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:38:49,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:49,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:49,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:38:49,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 17:38:49,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:38:49,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-10-14 17:38:49,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:38:49,598 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:38:49,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-14 17:38:49,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:38:49,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-14 17:38:49,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:38:49,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-10-14 17:38:49,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:38:49,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:49,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:49,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:38:49,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 17:38:49,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:38:49,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-10-14 17:38:49,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:38:49,764 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:38:49,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-14 17:38:49,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:38:49,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-14 17:38:49,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:38:49,807 INFO L134 CoverageAnalysis]: Checked inductivity of 9423 backedges. 3072 proven. 6144 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2020-10-14 17:38:49,808 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1430740916] [2020-10-14 17:38:49,808 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:38:49,808 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2020-10-14 17:38:49,808 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272122181] [2020-10-14 17:38:49,809 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-10-14 17:38:49,809 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:38:49,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-10-14 17:38:49,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=597, Invalid=663, Unknown=0, NotChecked=0, Total=1260 [2020-10-14 17:38:49,810 INFO L87 Difference]: Start difference. First operand 89 states and 93 transitions. Second operand 36 states. [2020-10-14 17:38:50,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:38:50,904 INFO L93 Difference]: Finished difference Result 172 states and 182 transitions. [2020-10-14 17:38:50,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-14 17:38:50,905 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 224 [2020-10-14 17:38:50,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:38:50,906 INFO L225 Difference]: With dead ends: 172 [2020-10-14 17:38:50,906 INFO L226 Difference]: Without dead ends: 92 [2020-10-14 17:38:50,907 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 528 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1785, Invalid=2907, Unknown=0, NotChecked=0, Total=4692 [2020-10-14 17:38:50,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-10-14 17:38:50,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 91. [2020-10-14 17:38:50,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-14 17:38:50,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 95 transitions. [2020-10-14 17:38:50,911 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 95 transitions. Word has length 224 [2020-10-14 17:38:50,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:38:50,911 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 95 transitions. [2020-10-14 17:38:50,912 INFO L480 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-10-14 17:38:50,912 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 95 transitions. [2020-10-14 17:38:50,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2020-10-14 17:38:50,913 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:38:50,913 INFO L422 BasicCegarLoop]: trace histogram [99, 99, 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 17:38:50,913 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-14 17:38:50,913 INFO L427 AbstractCegarLoop]: === Iteration 34 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:38:50,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:38:50,913 INFO L82 PathProgramCache]: Analyzing trace with hash 1482259017, now seen corresponding path program 33 times [2020-10-14 17:38:50,913 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:38:50,914 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [16074664] [2020-10-14 17:38:50,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:38:50,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:38:50,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:50,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:50,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:51,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:55,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:38:55,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 242 [2020-10-14 17:38:55,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 17:38:55,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-14 17:38:55,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:38:55,932 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:38:55,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-14 17:38:55,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 17:38:55,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-14 17:38:55,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:38:55,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:38:55,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:38:55,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:55,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:38:55,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:38:55,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:38:55,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:38:55,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:38:55,947 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:38:55,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:38:55,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:38:55,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:38:55,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:38:55,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 17:38:55,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:38:55,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:56,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:38:56,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 17:38:56,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:38:56,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 270 [2020-10-14 17:38:56,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:38:56,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:38:56,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-14 17:38:56,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:38:56,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-14 17:38:56,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:38:56,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-14 17:38:56,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:38:56,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:56,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:57,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:38:57,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 17:38:57,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:38:57,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-10-14 17:38:57,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:38:57,092 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:38:57,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-14 17:38:57,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:38:57,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-14 17:38:57,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:38:57,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-14 17:38:57,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:38:57,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:57,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:57,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:38:57,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 17:38:57,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:38:57,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-10-14 17:38:57,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:38:57,273 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:38:57,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-14 17:38:57,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:38:57,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-14 17:38:57,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:38:57,318 INFO L134 CoverageAnalysis]: Checked inductivity of 10014 backedges. 3267 proven. 6534 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked. [2020-10-14 17:38:57,318 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [16074664] [2020-10-14 17:38:57,318 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:38:57,318 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2020-10-14 17:38:57,318 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241690711] [2020-10-14 17:38:57,319 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-10-14 17:38:57,319 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:38:57,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-10-14 17:38:57,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=632, Invalid=700, Unknown=0, NotChecked=0, Total=1332 [2020-10-14 17:38:57,320 INFO L87 Difference]: Start difference. First operand 91 states and 95 transitions. Second operand 37 states. [2020-10-14 17:38:58,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:38:58,457 INFO L93 Difference]: Finished difference Result 176 states and 186 transitions. [2020-10-14 17:38:58,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-14 17:38:58,459 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 230 [2020-10-14 17:38:58,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:38:58,460 INFO L225 Difference]: With dead ends: 176 [2020-10-14 17:38:58,460 INFO L226 Difference]: Without dead ends: 94 [2020-10-14 17:38:58,461 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 561 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1890, Invalid=3080, Unknown=0, NotChecked=0, Total=4970 [2020-10-14 17:38:58,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-10-14 17:38:58,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 93. [2020-10-14 17:38:58,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-10-14 17:38:58,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 97 transitions. [2020-10-14 17:38:58,466 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 97 transitions. Word has length 230 [2020-10-14 17:38:58,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:38:58,466 INFO L479 AbstractCegarLoop]: Abstraction has 93 states and 97 transitions. [2020-10-14 17:38:58,466 INFO L480 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-10-14 17:38:58,466 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 97 transitions. [2020-10-14 17:38:58,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2020-10-14 17:38:58,467 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:38:58,468 INFO L422 BasicCegarLoop]: trace histogram [102, 102, 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 17:38:58,468 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-14 17:38:58,468 INFO L427 AbstractCegarLoop]: === Iteration 35 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:38:58,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:38:58,468 INFO L82 PathProgramCache]: Analyzing trace with hash 862111559, now seen corresponding path program 34 times [2020-10-14 17:38:58,469 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:38:58,469 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1528352582] [2020-10-14 17:38:58,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:38:58,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:38:58,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:58,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:58,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:38:58,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:03,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:39:03,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-14 17:39:03,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 17:39:03,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 17:39:03,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:39:03,482 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:39:03,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-10-14 17:39:03,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-14 17:39:03,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 17:39:03,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:39:03,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:39:03,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:39:03,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:03,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:39:03,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:39:03,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:39:03,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:39:03,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:39:03,499 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:39:03,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:39:03,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:39:03,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:39:03,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:39:03,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 17:39:03,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:39:03,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:03,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:03,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:39:03,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-14 17:39:03,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:39:03,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 178 [2020-10-14 17:39:03,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:39:03,681 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:39:03,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-10-14 17:39:03,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:39:03,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 17:39:03,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:39:04,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-14 17:39:04,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:39:04,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:04,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:39:04,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-14 17:39:04,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:39:04,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 167 [2020-10-14 17:39:04,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:39:04,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:39:04,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-10-14 17:39:04,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:39:04,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 17:39:04,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:39:04,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-10-14 17:39:04,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:39:04,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:04,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:04,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:39:04,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-14 17:39:04,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:39:04,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 213 [2020-10-14 17:39:04,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:39:04,826 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:39:04,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-10-14 17:39:04,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:39:04,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 17:39:04,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:39:04,872 INFO L134 CoverageAnalysis]: Checked inductivity of 10623 backedges. 3468 proven. 6936 refuted. 0 times theorem prover too weak. 219 trivial. 0 not checked. [2020-10-14 17:39:04,873 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1528352582] [2020-10-14 17:39:04,873 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:39:04,873 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2020-10-14 17:39:04,873 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17817566] [2020-10-14 17:39:04,873 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-10-14 17:39:04,873 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:39:04,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-10-14 17:39:04,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=668, Invalid=738, Unknown=0, NotChecked=0, Total=1406 [2020-10-14 17:39:04,874 INFO L87 Difference]: Start difference. First operand 93 states and 97 transitions. Second operand 38 states. [2020-10-14 17:39:06,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:39:06,161 INFO L93 Difference]: Finished difference Result 180 states and 190 transitions. [2020-10-14 17:39:06,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-14 17:39:06,162 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 236 [2020-10-14 17:39:06,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:39:06,163 INFO L225 Difference]: With dead ends: 180 [2020-10-14 17:39:06,163 INFO L226 Difference]: Without dead ends: 96 [2020-10-14 17:39:06,165 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 595 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1998, Invalid=3258, Unknown=0, NotChecked=0, Total=5256 [2020-10-14 17:39:06,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-14 17:39:06,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 95. [2020-10-14 17:39:06,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-10-14 17:39:06,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 99 transitions. [2020-10-14 17:39:06,171 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 99 transitions. Word has length 236 [2020-10-14 17:39:06,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:39:06,171 INFO L479 AbstractCegarLoop]: Abstraction has 95 states and 99 transitions. [2020-10-14 17:39:06,171 INFO L480 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-10-14 17:39:06,171 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 99 transitions. [2020-10-14 17:39:06,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2020-10-14 17:39:06,173 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:39:06,173 INFO L422 BasicCegarLoop]: trace histogram [105, 105, 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 17:39:06,173 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-14 17:39:06,173 INFO L427 AbstractCegarLoop]: === Iteration 36 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:39:06,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:39:06,173 INFO L82 PathProgramCache]: Analyzing trace with hash 2034736581, now seen corresponding path program 35 times [2020-10-14 17:39:06,174 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:39:06,174 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [642879783] [2020-10-14 17:39:06,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:39:06,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:39:06,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:06,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:06,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:06,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:11,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:39:11,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 254 [2020-10-14 17:39:11,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 17:39:11,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 17:39:11,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:39:11,189 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:39:11,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 37 [2020-10-14 17:39:11,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-10-14 17:39:11,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-14 17:39:11,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:39:11,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:39:11,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:39:11,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:11,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:39:11,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:39:11,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:39:11,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:39:11,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:39:11,215 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:39:11,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:39:11,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:39:11,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:39:11,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:39:11,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 17:39:11,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:39:11,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:11,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:11,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:39:11,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 17:39:11,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:39:11,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 193 [2020-10-14 17:39:11,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:39:11,412 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:39:11,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 37 [2020-10-14 17:39:11,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:39:11,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-14 17:39:11,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:39:12,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-14 17:39:12,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:39:12,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:12,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:39:12,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 17:39:12,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:39:12,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 176 [2020-10-14 17:39:12,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:39:12,374 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:39:12,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 37 [2020-10-14 17:39:12,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:39:12,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-14 17:39:12,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:39:12,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2020-10-14 17:39:12,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:39:12,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:12,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:12,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:39:12,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 17:39:12,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:39:12,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 182 [2020-10-14 17:39:12,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:39:12,573 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:39:12,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 37 [2020-10-14 17:39:12,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:39:12,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-14 17:39:12,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:39:12,621 INFO L134 CoverageAnalysis]: Checked inductivity of 11250 backedges. 3675 proven. 7350 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2020-10-14 17:39:12,621 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [642879783] [2020-10-14 17:39:12,622 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:39:12,622 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2020-10-14 17:39:12,622 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486546851] [2020-10-14 17:39:12,622 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-10-14 17:39:12,622 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:39:12,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-10-14 17:39:12,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=705, Invalid=777, Unknown=0, NotChecked=0, Total=1482 [2020-10-14 17:39:12,623 INFO L87 Difference]: Start difference. First operand 95 states and 99 transitions. Second operand 39 states. [2020-10-14 17:39:13,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:39:13,903 INFO L93 Difference]: Finished difference Result 184 states and 194 transitions. [2020-10-14 17:39:13,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-14 17:39:13,903 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 242 [2020-10-14 17:39:13,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:39:13,905 INFO L225 Difference]: With dead ends: 184 [2020-10-14 17:39:13,905 INFO L226 Difference]: Without dead ends: 98 [2020-10-14 17:39:13,907 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 630 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=2109, Invalid=3441, Unknown=0, NotChecked=0, Total=5550 [2020-10-14 17:39:13,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-14 17:39:13,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 97. [2020-10-14 17:39:13,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-14 17:39:13,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 101 transitions. [2020-10-14 17:39:13,911 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 101 transitions. Word has length 242 [2020-10-14 17:39:13,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:39:13,912 INFO L479 AbstractCegarLoop]: Abstraction has 97 states and 101 transitions. [2020-10-14 17:39:13,912 INFO L480 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-10-14 17:39:13,912 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 101 transitions. [2020-10-14 17:39:13,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2020-10-14 17:39:13,913 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:39:13,913 INFO L422 BasicCegarLoop]: trace histogram [108, 108, 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 17:39:13,913 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-14 17:39:13,913 INFO L427 AbstractCegarLoop]: === Iteration 37 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:39:13,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:39:13,913 INFO L82 PathProgramCache]: Analyzing trace with hash 862084547, now seen corresponding path program 36 times [2020-10-14 17:39:13,914 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:39:13,914 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [243358999] [2020-10-14 17:39:13,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:39:13,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:39:13,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:13,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:13,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:14,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:18,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:39:18,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 260 [2020-10-14 17:39:18,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 17:39:18,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 17:39:18,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:39:18,925 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:39:18,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 38 [2020-10-14 17:39:18,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 17:39:18,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 17:39:18,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:39:18,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:39:18,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:39:18,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:18,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:39:18,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:39:18,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:39:18,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:39:18,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:39:18,939 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:39:18,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:39:18,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:39:18,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:39:18,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:39:18,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 17:39:18,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:39:18,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:19,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:39:19,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-14 17:39:19,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:39:19,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 188 [2020-10-14 17:39:19,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:39:19,135 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:39:19,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 38 [2020-10-14 17:39:19,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:39:19,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 17:39:19,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:39:19,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-14 17:39:19,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:39:19,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:19,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:20,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:39:20,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-14 17:39:20,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:39:20,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 200 [2020-10-14 17:39:20,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:39:20,163 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:39:20,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 38 [2020-10-14 17:39:20,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:39:20,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 17:39:20,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:39:20,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-10-14 17:39:20,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:39:20,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:20,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:20,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:39:20,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-14 17:39:20,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:39:20,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 199 [2020-10-14 17:39:20,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:39:20,381 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:39:20,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 38 [2020-10-14 17:39:20,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:39:20,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 17:39:20,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:39:20,432 INFO L134 CoverageAnalysis]: Checked inductivity of 11895 backedges. 3888 proven. 7776 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2020-10-14 17:39:20,432 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [243358999] [2020-10-14 17:39:20,433 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:39:20,433 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2020-10-14 17:39:20,433 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969612363] [2020-10-14 17:39:20,433 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2020-10-14 17:39:20,434 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:39:20,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2020-10-14 17:39:20,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=743, Invalid=817, Unknown=0, NotChecked=0, Total=1560 [2020-10-14 17:39:20,434 INFO L87 Difference]: Start difference. First operand 97 states and 101 transitions. Second operand 40 states. [2020-10-14 17:39:21,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:39:21,886 INFO L93 Difference]: Finished difference Result 188 states and 198 transitions. [2020-10-14 17:39:21,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-14 17:39:21,886 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 248 [2020-10-14 17:39:21,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:39:21,887 INFO L225 Difference]: With dead ends: 188 [2020-10-14 17:39:21,887 INFO L226 Difference]: Without dead ends: 100 [2020-10-14 17:39:21,889 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 666 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=2223, Invalid=3629, Unknown=0, NotChecked=0, Total=5852 [2020-10-14 17:39:21,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-10-14 17:39:21,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 99. [2020-10-14 17:39:21,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-14 17:39:21,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 103 transitions. [2020-10-14 17:39:21,894 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 103 transitions. Word has length 248 [2020-10-14 17:39:21,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:39:21,894 INFO L479 AbstractCegarLoop]: Abstraction has 99 states and 103 transitions. [2020-10-14 17:39:21,894 INFO L480 AbstractCegarLoop]: Interpolant automaton has 40 states. [2020-10-14 17:39:21,895 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 103 transitions. [2020-10-14 17:39:21,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2020-10-14 17:39:21,896 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:39:21,896 INFO L422 BasicCegarLoop]: trace histogram [111, 111, 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 17:39:21,897 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-14 17:39:21,897 INFO L427 AbstractCegarLoop]: === Iteration 38 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:39:21,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:39:21,897 INFO L82 PathProgramCache]: Analyzing trace with hash 1512400705, now seen corresponding path program 37 times [2020-10-14 17:39:21,897 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:39:21,897 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [636907087] [2020-10-14 17:39:21,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:39:21,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:39:21,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:21,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:21,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:21,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:26,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:39:26,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 266 [2020-10-14 17:39:26,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 17:39:26,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-14 17:39:26,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:39:26,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:39:26,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 39 [2020-10-14 17:39:26,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 17:39:26,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 17:39:26,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:39:26,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:39:26,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:39:26,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:26,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:39:26,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:39:26,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:39:26,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:39:26,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:39:26,927 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:39:26,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:39:26,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:39:26,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:39:26,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:39:26,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 17:39:26,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:39:26,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:27,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:39:27,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-14 17:39:27,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:39:27,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 209 [2020-10-14 17:39:27,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:39:27,145 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:39:27,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 39 [2020-10-14 17:39:27,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:39:27,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 17:39:27,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:39:27,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-14 17:39:27,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:39:27,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:28,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:28,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:39:28,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-14 17:39:28,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:39:28,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 223 [2020-10-14 17:39:28,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:39:28,219 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:39:28,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 39 [2020-10-14 17:39:28,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:39:28,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 17:39:28,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:39:28,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-10-14 17:39:28,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:39:28,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:28,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:28,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:39:28,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-14 17:39:28,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:39:28,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 218 [2020-10-14 17:39:28,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:39:28,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:39:28,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 39 [2020-10-14 17:39:28,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:39:28,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 17:39:28,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:39:28,507 INFO L134 CoverageAnalysis]: Checked inductivity of 12558 backedges. 4107 proven. 8214 refuted. 0 times theorem prover too weak. 237 trivial. 0 not checked. [2020-10-14 17:39:28,508 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [636907087] [2020-10-14 17:39:28,508 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:39:28,508 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2020-10-14 17:39:28,508 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359695623] [2020-10-14 17:39:28,509 INFO L459 AbstractCegarLoop]: Interpolant automaton has 41 states [2020-10-14 17:39:28,509 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:39:28,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2020-10-14 17:39:28,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=782, Invalid=858, Unknown=0, NotChecked=0, Total=1640 [2020-10-14 17:39:28,510 INFO L87 Difference]: Start difference. First operand 99 states and 103 transitions. Second operand 41 states. [2020-10-14 17:39:29,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:39:29,926 INFO L93 Difference]: Finished difference Result 192 states and 202 transitions. [2020-10-14 17:39:29,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-10-14 17:39:29,927 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 254 [2020-10-14 17:39:29,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:39:29,928 INFO L225 Difference]: With dead ends: 192 [2020-10-14 17:39:29,928 INFO L226 Difference]: Without dead ends: 102 [2020-10-14 17:39:29,930 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 703 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=2340, Invalid=3822, Unknown=0, NotChecked=0, Total=6162 [2020-10-14 17:39:29,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-10-14 17:39:29,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 101. [2020-10-14 17:39:29,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-14 17:39:29,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 105 transitions. [2020-10-14 17:39:29,935 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 105 transitions. Word has length 254 [2020-10-14 17:39:29,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:39:29,935 INFO L479 AbstractCegarLoop]: Abstraction has 101 states and 105 transitions. [2020-10-14 17:39:29,935 INFO L480 AbstractCegarLoop]: Interpolant automaton has 41 states. [2020-10-14 17:39:29,936 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 105 transitions. [2020-10-14 17:39:29,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2020-10-14 17:39:29,937 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:39:29,937 INFO L422 BasicCegarLoop]: trace histogram [114, 114, 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 17:39:29,937 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-14 17:39:29,938 INFO L427 AbstractCegarLoop]: === Iteration 39 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:39:29,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:39:29,938 INFO L82 PathProgramCache]: Analyzing trace with hash 1796938303, now seen corresponding path program 38 times [2020-10-14 17:39:29,938 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:39:29,938 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1626962087] [2020-10-14 17:39:29,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:39:29,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:39:29,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:29,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:30,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:30,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking...