/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/eca-rers2012/Problem17_label55.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 22:38:08,655 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 22:38:08,659 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 22:38:08,699 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 22:38:08,699 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 22:38:08,707 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 22:38:08,709 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 22:38:08,713 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 22:38:08,715 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 22:38:08,719 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 22:38:08,719 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 22:38:08,720 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 22:38:08,721 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 22:38:08,723 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 22:38:08,725 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 22:38:08,726 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 22:38:08,728 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 22:38:08,729 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 22:38:08,730 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 22:38:08,738 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 22:38:08,740 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 22:38:08,740 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 22:38:08,741 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 22:38:08,742 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 22:38:08,757 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 22:38:08,757 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 22:38:08,758 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 22:38:08,759 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 22:38:08,762 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 22:38:08,763 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 22:38:08,763 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 22:38:08,764 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 22:38:08,764 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 22:38:08,765 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 22:38:08,766 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 22:38:08,766 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 22:38:08,766 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 22:38:08,767 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 22:38:08,767 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 22:38:08,774 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 22:38:08,775 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 22:38:08,776 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 22:38:08,798 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 22:38:08,799 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 22:38:08,800 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 22:38:08,800 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 22:38:08,800 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 22:38:08,801 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 22:38:08,801 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 22:38:08,801 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 22:38:08,801 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 22:38:08,801 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 22:38:08,801 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 22:38:08,802 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 22:38:08,802 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 22:38:08,802 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 22:38:08,802 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 22:38:08,802 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 22:38:08,803 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 22:38:08,803 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 22:38:08,803 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 22:38:08,803 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 22:38:08,803 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 22:38:08,804 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 22:38:08,804 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 22:38:08,804 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 22:38:08,804 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 22:38:08,804 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 22:38:08,805 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 22:38:08,805 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 22:38:08,805 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 22:38:08,805 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 22:38:09,100 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 22:38:09,115 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 22:38:09,125 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 22:38:09,126 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 22:38:09,127 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 22:38:09,129 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label55.c [2020-10-14 22:38:09,189 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/da24cd12e/aa2526f0605743209bf79f35c68a261c/FLAGe9200628d [2020-10-14 22:38:09,856 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 22:38:09,857 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem17_label55.c [2020-10-14 22:38:09,885 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/da24cd12e/aa2526f0605743209bf79f35c68a261c/FLAGe9200628d [2020-10-14 22:38:10,016 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/da24cd12e/aa2526f0605743209bf79f35c68a261c [2020-10-14 22:38:10,025 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 22:38:10,026 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 22:38:10,031 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 22:38:10,031 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 22:38:10,035 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 22:38:10,036 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:38:10" (1/1) ... [2020-10-14 22:38:10,039 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b3dee29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:38:10, skipping insertion in model container [2020-10-14 22:38:10,040 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:38:10" (1/1) ... [2020-10-14 22:38:10,048 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 22:38:10,149 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 22:38:11,411 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 22:38:11,418 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 22:38:11,782 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 22:38:11,804 INFO L208 MainTranslator]: Completed translation [2020-10-14 22:38:11,805 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:38:11 WrapperNode [2020-10-14 22:38:11,805 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 22:38:11,806 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 22:38:11,806 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 22:38:11,806 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 22:38:11,821 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:38:11" (1/1) ... [2020-10-14 22:38:11,823 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:38:11" (1/1) ... [2020-10-14 22:38:11,886 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:38:11" (1/1) ... [2020-10-14 22:38:11,886 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:38:11" (1/1) ... [2020-10-14 22:38:11,992 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:38:11" (1/1) ... [2020-10-14 22:38:12,016 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:38:11" (1/1) ... [2020-10-14 22:38:12,042 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:38:11" (1/1) ... [2020-10-14 22:38:12,077 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 22:38:12,078 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 22:38:12,078 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 22:38:12,078 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 22:38:12,080 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:38:11" (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 22:38:12,161 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 22:38:12,161 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 22:38:12,162 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 22:38:12,162 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 22:38:12,162 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 22:38:12,162 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 22:38:12,163 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 22:38:12,164 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 22:38:12,164 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 22:38:12,164 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 22:38:12,165 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 22:38:12,165 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 22:38:12,165 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 22:38:18,616 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 22:38:18,617 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 22:38:18,628 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:38:18 BoogieIcfgContainer [2020-10-14 22:38:18,628 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 22:38:18,629 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 22:38:18,629 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 22:38:18,633 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 22:38:18,633 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 10:38:10" (1/3) ... [2020-10-14 22:38:18,634 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@520ec5e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:38:18, skipping insertion in model container [2020-10-14 22:38:18,634 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:38:11" (2/3) ... [2020-10-14 22:38:18,634 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@520ec5e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:38:18, skipping insertion in model container [2020-10-14 22:38:18,635 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:38:18" (3/3) ... [2020-10-14 22:38:18,636 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem17_label55.c [2020-10-14 22:38:18,646 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 22:38:18,654 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 22:38:18,668 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 22:38:18,699 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 22:38:18,699 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 22:38:18,699 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 22:38:18,700 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 22:38:18,700 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 22:38:18,700 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 22:38:18,700 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 22:38:18,700 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 22:38:18,742 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states. [2020-10-14 22:38:18,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-14 22:38:18,752 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:38:18,753 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:38:18,753 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:38:18,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:38:18,759 INFO L82 PathProgramCache]: Analyzing trace with hash 737483217, now seen corresponding path program 1 times [2020-10-14 22:38:18,766 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:38:18,767 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1082602036] [2020-10-14 22:38:18,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:38:18,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:38:18,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:38:19,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:38:19,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 22:38:19,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:38:19,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 272 [2020-10-14 22:38:19,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:38:19,160 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:38:19,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:38:19,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:38:19,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 22:38:19,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 22:38:19,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:38:19,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:38:19,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:38:19,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:38:19,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:38:19,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:38:19,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 22:38:19,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:38:19,350 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:38:19,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:38:19,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:38:19,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:38:19,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:38:19,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 22:38:19,363 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1082602036] [2020-10-14 22:38:19,365 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 22:38:19,365 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 22:38:19,366 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946534867] [2020-10-14 22:38:19,371 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 22:38:19,372 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:38:19,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 22:38:19,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 22:38:19,389 INFO L87 Difference]: Start difference. First operand 603 states. Second operand 4 states. [2020-10-14 22:38:28,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:38:28,950 INFO L93 Difference]: Finished difference Result 1692 states and 3091 transitions. [2020-10-14 22:38:28,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 22:38:28,952 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-14 22:38:28,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:38:28,980 INFO L225 Difference]: With dead ends: 1692 [2020-10-14 22:38:28,980 INFO L226 Difference]: Without dead ends: 1012 [2020-10-14 22:38:28,994 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 22:38:29,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1012 states. [2020-10-14 22:38:29,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1012 to 1002. [2020-10-14 22:38:29,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1002 states. [2020-10-14 22:38:29,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1002 states to 1002 states and 1542 transitions. [2020-10-14 22:38:29,111 INFO L78 Accepts]: Start accepts. Automaton has 1002 states and 1542 transitions. Word has length 17 [2020-10-14 22:38:29,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:38:29,111 INFO L479 AbstractCegarLoop]: Abstraction has 1002 states and 1542 transitions. [2020-10-14 22:38:29,112 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 22:38:29,112 INFO L276 IsEmpty]: Start isEmpty. Operand 1002 states and 1542 transitions. [2020-10-14 22:38:29,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-14 22:38:29,116 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:38:29,116 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:38:29,117 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 22:38:29,117 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:38:29,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:38:29,117 INFO L82 PathProgramCache]: Analyzing trace with hash -1507327641, now seen corresponding path program 1 times [2020-10-14 22:38:29,118 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:38:29,118 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1964280124] [2020-10-14 22:38:29,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:38:29,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:38:29,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:38:29,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:38:30,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:38:30,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-14 22:38:30,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:38:30,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 888 [2020-10-14 22:38:30,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:38:30,065 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:38:30,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:38:30,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:38:30,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-14 22:38:30,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:38:30,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:38:30,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:38:30,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:38:30,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:38:30,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:38:30,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:38:30,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 22:38:30,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:38:30,134 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:38:30,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:38:30,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:38:30,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:38:30,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:38:30,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:38:30,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:38:30,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:38:30,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:38:30,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 22:38:30,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:38:30,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-14 22:38:30,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:38:30,309 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:38:30,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:38:30,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:38:30,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-14 22:38:30,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:38:30,373 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 22:38:30,374 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1964280124] [2020-10-14 22:38:30,374 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 22:38:30,375 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-14 22:38:30,375 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471959756] [2020-10-14 22:38:30,377 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 22:38:30,377 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:38:30,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 22:38:30,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 22:38:30,378 INFO L87 Difference]: Start difference. First operand 1002 states and 1542 transitions. Second operand 8 states. [2020-10-14 22:38:48,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:38:48,477 INFO L93 Difference]: Finished difference Result 3827 states and 5954 transitions. [2020-10-14 22:38:48,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 22:38:48,478 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 88 [2020-10-14 22:38:48,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:38:48,494 INFO L225 Difference]: With dead ends: 3827 [2020-10-14 22:38:48,494 INFO L226 Difference]: Without dead ends: 2831 [2020-10-14 22:38:48,499 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-14 22:38:48,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2831 states. [2020-10-14 22:38:48,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2831 to 2818. [2020-10-14 22:38:48,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2818 states. [2020-10-14 22:38:48,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2818 states to 2818 states and 3658 transitions. [2020-10-14 22:38:48,590 INFO L78 Accepts]: Start accepts. Automaton has 2818 states and 3658 transitions. Word has length 88 [2020-10-14 22:38:48,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:38:48,591 INFO L479 AbstractCegarLoop]: Abstraction has 2818 states and 3658 transitions. [2020-10-14 22:38:48,591 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 22:38:48,591 INFO L276 IsEmpty]: Start isEmpty. Operand 2818 states and 3658 transitions. [2020-10-14 22:38:48,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-14 22:38:48,594 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:38:48,594 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:38:48,595 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 22:38:48,595 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:38:48,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:38:48,595 INFO L82 PathProgramCache]: Analyzing trace with hash -890287815, now seen corresponding path program 1 times [2020-10-14 22:38:48,596 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:38:48,596 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1243572386] [2020-10-14 22:38:48,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:38:48,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:38:48,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:38:48,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:38:48,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-14 22:38:48,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:38:48,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 222 [2020-10-14 22:38:48,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:38:48,855 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:38:48,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:38:48,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-14 22:38:48,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 22:38:48,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:38:48,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:38:48,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:38:48,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:38:48,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:38:48,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:38:48,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:38:48,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 22:38:48,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:38:48,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:38:48,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:38:48,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:38:48,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:38:48,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 22:38:48,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:38:49,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:38:49,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:38:49,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:38:49,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 22:38:49,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:38:49,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-14 22:38:49,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:38:49,128 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:38:49,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:38:49,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:38:49,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-14 22:38:49,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:38:49,179 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 22:38:49,180 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1243572386] [2020-10-14 22:38:49,180 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:38:49,180 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 22:38:49,181 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924716994] [2020-10-14 22:38:49,181 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 22:38:49,182 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:38:49,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 22:38:49,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 22:38:49,183 INFO L87 Difference]: Start difference. First operand 2818 states and 3658 transitions. Second operand 5 states. [2020-10-14 22:39:02,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:39:02,065 INFO L93 Difference]: Finished difference Result 6979 states and 9332 transitions. [2020-10-14 22:39:02,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 22:39:02,066 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 91 [2020-10-14 22:39:02,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:39:02,090 INFO L225 Difference]: With dead ends: 6979 [2020-10-14 22:39:02,091 INFO L226 Difference]: Without dead ends: 3716 [2020-10-14 22:39:02,099 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 22:39:02,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3716 states. [2020-10-14 22:39:02,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3716 to 3710. [2020-10-14 22:39:02,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3710 states. [2020-10-14 22:39:02,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3710 states to 3710 states and 4568 transitions. [2020-10-14 22:39:02,224 INFO L78 Accepts]: Start accepts. Automaton has 3710 states and 4568 transitions. Word has length 91 [2020-10-14 22:39:02,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:39:02,225 INFO L479 AbstractCegarLoop]: Abstraction has 3710 states and 4568 transitions. [2020-10-14 22:39:02,225 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 22:39:02,226 INFO L276 IsEmpty]: Start isEmpty. Operand 3710 states and 4568 transitions. [2020-10-14 22:39:02,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-10-14 22:39:02,239 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:39:02,239 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:39:02,239 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 22:39:02,243 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:39:02,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:39:02,244 INFO L82 PathProgramCache]: Analyzing trace with hash 891881397, now seen corresponding path program 1 times [2020-10-14 22:39:02,245 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:39:02,246 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1306552318] [2020-10-14 22:39:02,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:39:02,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:39:02,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:39:02,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:39:03,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:39:03,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-14 22:39:03,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:39:03,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1117 [2020-10-14 22:39:03,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:39:03,440 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:39:03,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:39:03,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-14 22:39:03,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 22:39:03,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:39:03,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:39:03,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:39:03,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:39:03,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:39:03,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:39:03,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:39:03,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 22:39:03,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:39:03,543 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:39:03,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:39:03,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:39:03,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:39:03,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:39:03,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:39:03,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:39:03,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:39:03,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:39:03,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:39:03,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:39:03,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-14 22:39:03,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:39:03,707 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:39:03,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:39:03,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:39:03,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 22:39:03,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:39:03,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:39:03,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:39:03,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:39:04,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:39:04,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 22:39:04,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:39:04,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 287 [2020-10-14 22:39:04,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:39:04,057 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:39:04,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:39:04,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:39:04,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 22:39:04,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:39:04,178 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 90 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 22:39:04,179 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1306552318] [2020-10-14 22:39:04,179 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:39:04,179 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:39:04,180 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693791253] [2020-10-14 22:39:04,180 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:39:04,181 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:39:04,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:39:04,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:39:04,181 INFO L87 Difference]: Start difference. First operand 3710 states and 4568 transitions. Second operand 7 states. [2020-10-14 22:39:12,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:39:12,532 INFO L93 Difference]: Finished difference Result 7869 states and 9910 transitions. [2020-10-14 22:39:12,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 22:39:12,533 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 177 [2020-10-14 22:39:12,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:39:12,551 INFO L225 Difference]: With dead ends: 7869 [2020-10-14 22:39:12,551 INFO L226 Difference]: Without dead ends: 4165 [2020-10-14 22:39:12,561 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 22:39:12,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4165 states. [2020-10-14 22:39:12,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4165 to 4157. [2020-10-14 22:39:12,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4157 states. [2020-10-14 22:39:12,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4157 states to 4157 states and 5060 transitions. [2020-10-14 22:39:12,667 INFO L78 Accepts]: Start accepts. Automaton has 4157 states and 5060 transitions. Word has length 177 [2020-10-14 22:39:12,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:39:12,669 INFO L479 AbstractCegarLoop]: Abstraction has 4157 states and 5060 transitions. [2020-10-14 22:39:12,669 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:39:12,669 INFO L276 IsEmpty]: Start isEmpty. Operand 4157 states and 5060 transitions. [2020-10-14 22:39:12,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-10-14 22:39:12,672 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:39:12,672 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:39:12,673 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 22:39:12,673 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:39:12,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:39:12,673 INFO L82 PathProgramCache]: Analyzing trace with hash -1048471559, now seen corresponding path program 1 times [2020-10-14 22:39:12,674 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:39:12,674 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [111492697] [2020-10-14 22:39:12,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:39:12,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:39:12,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:39:12,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:39:14,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:39:16,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:39:16,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 191 [2020-10-14 22:39:16,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 22:39:16,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3790 [2020-10-14 22:39:16,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:39:16,518 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:39:16,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 22:39:16,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:39:16,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 170 [2020-10-14 22:39:16,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:39:16,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:39:16,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:39:16,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:39:16,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:39:16,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:39:16,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:39:16,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 22:39:16,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:39:16,631 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:39:16,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:39:16,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:39:16,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:39:16,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:39:16,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:39:16,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:39:16,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:39:16,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:39:16,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:39:16,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:39:16,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 167 [2020-10-14 22:39:16,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:39:16,840 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:39:16,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 22:39:16,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:39:16,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-14 22:39:16,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:39:16,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:39:16,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:39:16,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:39:17,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:39:17,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 22:39:17,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:39:17,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-10-14 22:39:17,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:39:17,089 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:39:17,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:39:17,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:39:17,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 22:39:17,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:39:17,229 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 21 proven. 5 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-10-14 22:39:17,230 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [111492697] [2020-10-14 22:39:17,230 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:39:17,230 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 22:39:17,230 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411483783] [2020-10-14 22:39:17,231 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 22:39:17,231 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:39:17,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 22:39:17,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-14 22:39:17,232 INFO L87 Difference]: Start difference. First operand 4157 states and 5060 transitions. Second operand 9 states. [2020-10-14 22:39:36,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:39:36,031 INFO L93 Difference]: Finished difference Result 12036 states and 14756 transitions. [2020-10-14 22:39:36,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 22:39:36,032 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 179 [2020-10-14 22:39:36,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:39:36,069 INFO L225 Difference]: With dead ends: 12036 [2020-10-14 22:39:36,069 INFO L226 Difference]: Without dead ends: 7435 [2020-10-14 22:39:36,081 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2020-10-14 22:39:36,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7435 states. [2020-10-14 22:39:36,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7435 to 7357. [2020-10-14 22:39:36,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7357 states. [2020-10-14 22:39:36,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7357 states to 7357 states and 8552 transitions. [2020-10-14 22:39:36,233 INFO L78 Accepts]: Start accepts. Automaton has 7357 states and 8552 transitions. Word has length 179 [2020-10-14 22:39:36,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:39:36,234 INFO L479 AbstractCegarLoop]: Abstraction has 7357 states and 8552 transitions. [2020-10-14 22:39:36,234 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 22:39:36,234 INFO L276 IsEmpty]: Start isEmpty. Operand 7357 states and 8552 transitions. [2020-10-14 22:39:36,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2020-10-14 22:39:36,238 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:39:36,238 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:39:36,239 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 22:39:36,239 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:39:36,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:39:36,239 INFO L82 PathProgramCache]: Analyzing trace with hash -715191574, now seen corresponding path program 1 times [2020-10-14 22:39:36,240 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:39:36,240 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2134427150] [2020-10-14 22:39:36,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:39:36,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:39:36,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:39:36,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:39:37,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:39:38,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:39:38,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:39:38,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-14 22:39:38,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 22:39:38,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2127 [2020-10-14 22:39:38,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:39:38,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:39:38,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 22:39:38,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:39:38,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-14 22:39:38,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:39:38,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:39:38,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:39:38,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:39:38,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:39:38,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:39:38,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:39:38,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 22:39:38,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:39:38,543 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:39:38,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:39:38,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:39:38,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:39:38,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:39:38,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:39:38,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:39:38,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:39:38,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:39:38,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:39:38,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:39:38,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 264 [2020-10-14 22:39:38,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:39:38,847 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:39:38,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 22:39:38,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:39:38,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-14 22:39:38,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:39:38,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:39:38,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:39:38,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:39:39,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:39:39,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 22:39:39,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:39:39,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-10-14 22:39:39,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:39:39,099 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:39:39,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:39:39,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:39:39,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-14 22:39:39,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:39:39,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-14 22:39:39,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:39:39,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:39:39,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:39:39,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 22:39:39,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:39:39,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-14 22:39:39,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:39:39,271 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:39:39,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:39:39,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:39:39,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-14 22:39:39,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:39:39,391 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 152 proven. 25 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2020-10-14 22:39:39,392 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2134427150] [2020-10-14 22:39:39,393 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:39:39,393 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 22:39:39,393 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537719540] [2020-10-14 22:39:39,394 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 22:39:39,394 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:39:39,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 22:39:39,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-14 22:39:39,395 INFO L87 Difference]: Start difference. First operand 7357 states and 8552 transitions. Second operand 9 states. [2020-10-14 22:39:59,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:39:59,552 INFO L93 Difference]: Finished difference Result 20781 states and 25190 transitions. [2020-10-14 22:39:59,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 22:39:59,558 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 261 [2020-10-14 22:39:59,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:39:59,613 INFO L225 Difference]: With dead ends: 20781 [2020-10-14 22:39:59,613 INFO L226 Difference]: Without dead ends: 13395 [2020-10-14 22:39:59,635 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2020-10-14 22:39:59,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13395 states. [2020-10-14 22:39:59,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13395 to 10588. [2020-10-14 22:39:59,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10588 states. [2020-10-14 22:39:59,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10588 states to 10588 states and 12504 transitions. [2020-10-14 22:39:59,942 INFO L78 Accepts]: Start accepts. Automaton has 10588 states and 12504 transitions. Word has length 261 [2020-10-14 22:39:59,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:39:59,943 INFO L479 AbstractCegarLoop]: Abstraction has 10588 states and 12504 transitions. [2020-10-14 22:39:59,943 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 22:39:59,943 INFO L276 IsEmpty]: Start isEmpty. Operand 10588 states and 12504 transitions. [2020-10-14 22:39:59,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2020-10-14 22:39:59,947 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:39:59,948 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:39:59,948 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 22:39:59,948 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:39:59,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:39:59,949 INFO L82 PathProgramCache]: Analyzing trace with hash -218993708, now seen corresponding path program 1 times [2020-10-14 22:39:59,949 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:39:59,950 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2087421895] [2020-10-14 22:39:59,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:40:00,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:40:00,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:40:00,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:40:00,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:40:01,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:40:04,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:40:04,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 298 [2020-10-14 22:40:04,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 22:40:04,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4584 [2020-10-14 22:40:04,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:40:04,598 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:40:04,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:40:04,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-14 22:40:04,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-14 22:40:04,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:40:04,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:40:04,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:40:04,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:40:04,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:40:04,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:40:04,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:40:04,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:40:04,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:40:04,688 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:40:04,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:40:04,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:40:04,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:40:04,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:40:04,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:40:04,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:40:04,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:40:04,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:40:04,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:40:04,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:40:04,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-14 22:40:04,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:40:04,801 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:40:04,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:40:04,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:40:04,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 22:40:04,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:40:04,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:40:04,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:40:04,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:40:05,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:40:05,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-14 22:40:05,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:40:05,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 227 [2020-10-14 22:40:05,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:40:05,080 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:40:05,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:40:05,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:40:05,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-14 22:40:05,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:40:05,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-14 22:40:05,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:40:05,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:40:05,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:40:05,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 22:40:05,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:40:05,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-14 22:40:05,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:40:05,410 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:40:05,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:40:05,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-14 22:40:05,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:40:05,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:40:05,808 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 118 proven. 70 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-10-14 22:40:05,808 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2087421895] [2020-10-14 22:40:05,809 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:40:05,809 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:40:05,810 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462564342] [2020-10-14 22:40:05,811 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:40:05,811 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:40:05,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:40:05,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:40:05,812 INFO L87 Difference]: Start difference. First operand 10588 states and 12504 transitions. Second operand 7 states. [2020-10-14 22:40:17,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:40:17,202 INFO L93 Difference]: Finished difference Result 22217 states and 26350 transitions. [2020-10-14 22:40:17,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 22:40:17,204 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 284 [2020-10-14 22:40:17,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:40:17,238 INFO L225 Difference]: With dead ends: 22217 [2020-10-14 22:40:17,239 INFO L226 Difference]: Without dead ends: 12070 [2020-10-14 22:40:17,260 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 22:40:17,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12070 states. [2020-10-14 22:40:17,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12070 to 12009. [2020-10-14 22:40:17,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12009 states. [2020-10-14 22:40:17,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12009 states to 12009 states and 14177 transitions. [2020-10-14 22:40:17,459 INFO L78 Accepts]: Start accepts. Automaton has 12009 states and 14177 transitions. Word has length 284 [2020-10-14 22:40:17,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:40:17,460 INFO L479 AbstractCegarLoop]: Abstraction has 12009 states and 14177 transitions. [2020-10-14 22:40:17,460 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:40:17,460 INFO L276 IsEmpty]: Start isEmpty. Operand 12009 states and 14177 transitions. [2020-10-14 22:40:17,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2020-10-14 22:40:17,465 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:40:17,466 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:40:17,466 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 22:40:17,466 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:40:17,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:40:17,466 INFO L82 PathProgramCache]: Analyzing trace with hash 773938612, now seen corresponding path program 1 times [2020-10-14 22:40:17,467 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:40:17,467 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [196580383] [2020-10-14 22:40:17,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:40:17,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:40:17,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:40:18,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:40:18,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:40:21,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:40:22,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:40:22,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 322 [2020-10-14 22:40:22,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 22:40:22,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-14 22:40:22,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:40:22,547 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:40:22,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 22:40:22,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:40:22,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 224 [2020-10-14 22:40:22,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:40:22,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:40:22,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:40:22,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:40:22,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:40:22,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:40:22,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:40:22,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 22:40:22,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:40:22,673 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:40:22,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:40:22,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:40:22,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:40:22,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:40:22,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:40:22,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:40:22,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:40:22,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:40:22,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:40:22,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:40:22,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 175 [2020-10-14 22:40:22,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:40:22,907 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:40:22,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 22:40:22,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:40:22,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-14 22:40:22,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:40:22,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:40:23,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:40:23,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:40:23,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:40:23,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-14 22:40:23,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:40:23,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 200 [2020-10-14 22:40:23,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:40:23,213 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:40:23,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:40:23,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:40:23,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-14 22:40:23,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:40:23,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2020-10-14 22:40:23,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:40:23,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:40:23,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:40:23,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 22:40:23,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:40:23,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-14 22:40:23,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:40:23,420 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:40:23,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:40:23,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-14 22:40:23,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:40:23,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:40:23,721 INFO L134 CoverageAnalysis]: Checked inductivity of 267 backedges. 35 proven. 225 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-14 22:40:23,722 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [196580383] [2020-10-14 22:40:23,722 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:40:23,722 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 22:40:23,723 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387856601] [2020-10-14 22:40:23,725 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 22:40:23,725 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:40:23,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 22:40:23,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-14 22:40:23,725 INFO L87 Difference]: Start difference. First operand 12009 states and 14177 transitions. Second operand 10 states. [2020-10-14 22:40:39,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:40:39,594 INFO L93 Difference]: Finished difference Result 24182 states and 28697 transitions. [2020-10-14 22:40:39,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 22:40:39,598 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 308 [2020-10-14 22:40:39,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:40:39,639 INFO L225 Difference]: With dead ends: 24182 [2020-10-14 22:40:39,639 INFO L226 Difference]: Without dead ends: 12614 [2020-10-14 22:40:39,662 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2020-10-14 22:40:39,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12614 states. [2020-10-14 22:40:39,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12614 to 12486. [2020-10-14 22:40:39,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12486 states. [2020-10-14 22:40:39,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12486 states to 12486 states and 14697 transitions. [2020-10-14 22:40:39,888 INFO L78 Accepts]: Start accepts. Automaton has 12486 states and 14697 transitions. Word has length 308 [2020-10-14 22:40:39,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:40:39,889 INFO L479 AbstractCegarLoop]: Abstraction has 12486 states and 14697 transitions. [2020-10-14 22:40:39,889 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 22:40:39,890 INFO L276 IsEmpty]: Start isEmpty. Operand 12486 states and 14697 transitions. [2020-10-14 22:40:39,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 364 [2020-10-14 22:40:39,897 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:40:39,897 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:40:39,897 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 22:40:39,898 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:40:39,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:40:39,898 INFO L82 PathProgramCache]: Analyzing trace with hash 1041782940, now seen corresponding path program 1 times [2020-10-14 22:40:39,899 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:40:39,899 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1123005353] [2020-10-14 22:40:39,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:40:39,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:40:40,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:40:40,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:40:40,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:40:44,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:40:45,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 379 [2020-10-14 22:40:45,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 22:40:45,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-14 22:40:45,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:40:45,000 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:40:45,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:40:45,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 185 [2020-10-14 22:40:45,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-14 22:40:45,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:40:45,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:40:45,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:40:45,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:40:45,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:40:45,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:40:45,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:40:45,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:40:45,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:40:45,090 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:40:45,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:40:45,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:40:45,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:40:45,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:40:45,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:40:45,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:40:45,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:40:45,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:40:45,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:40:45,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:40:45,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 22:40:45,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:40:45,135 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:40:45,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:40:45,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:40:45,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:40:45,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:40:45,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:40:45,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:40:45,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:40:45,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:40:45,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 22:40:45,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:40:45,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-14 22:40:45,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:40:45,201 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:40:45,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:40:45,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:40:45,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 22:40:45,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:40:45,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-14 22:40:45,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:40:45,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:40:45,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:40:45,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-14 22:40:45,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:40:45,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-14 22:40:45,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:40:45,322 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:40:45,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:40:45,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:40:45,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-14 22:40:45,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:40:45,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2020-10-14 22:40:45,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:40:45,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:40:45,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:40:45,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 22:40:45,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:40:45,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 22:40:45,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:40:45,412 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:40:45,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:40:45,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-14 22:40:45,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:40:45,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:40:45,552 INFO L134 CoverageAnalysis]: Checked inductivity of 512 backedges. 220 proven. 70 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2020-10-14 22:40:45,552 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1123005353] [2020-10-14 22:40:45,552 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:40:45,553 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:40:45,553 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785625160] [2020-10-14 22:40:45,554 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:40:45,554 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:40:45,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:40:45,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:40:45,555 INFO L87 Difference]: Start difference. First operand 12486 states and 14697 transitions. Second operand 7 states. [2020-10-14 22:41:03,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:41:03,447 INFO L93 Difference]: Finished difference Result 27924 states and 33853 transitions. [2020-10-14 22:41:03,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 22:41:03,449 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 363 [2020-10-14 22:41:03,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:41:03,506 INFO L225 Difference]: With dead ends: 27924 [2020-10-14 22:41:03,507 INFO L226 Difference]: Without dead ends: 16312 [2020-10-14 22:41:03,532 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 22:41:03,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16312 states. [2020-10-14 22:41:03,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16312 to 15698. [2020-10-14 22:41:03,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15698 states. [2020-10-14 22:41:03,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15698 states to 15698 states and 18911 transitions. [2020-10-14 22:41:03,831 INFO L78 Accepts]: Start accepts. Automaton has 15698 states and 18911 transitions. Word has length 363 [2020-10-14 22:41:03,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:41:03,832 INFO L479 AbstractCegarLoop]: Abstraction has 15698 states and 18911 transitions. [2020-10-14 22:41:03,832 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:41:03,832 INFO L276 IsEmpty]: Start isEmpty. Operand 15698 states and 18911 transitions. [2020-10-14 22:41:03,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2020-10-14 22:41:03,841 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:41:03,841 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:41:03,841 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 22:41:03,842 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:41:03,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:41:03,842 INFO L82 PathProgramCache]: Analyzing trace with hash 776679675, now seen corresponding path program 1 times [2020-10-14 22:41:03,842 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:41:03,843 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [146206676] [2020-10-14 22:41:03,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:41:04,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:41:04,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:41:04,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:41:04,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:41:04,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:41:06,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:41:09,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:41:09,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 386 [2020-10-14 22:41:09,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 22:41:09,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 22:41:09,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:41:09,014 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:41:09,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 22:41:09,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:41:09,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 292 [2020-10-14 22:41:09,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:41:09,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:41:09,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:41:09,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:41:09,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:41:09,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:41:09,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:41:09,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 22:41:09,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:41:09,112 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:41:09,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:41:09,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:41:09,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:41:09,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:41:09,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:41:09,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:41:09,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:41:09,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:41:09,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:41:09,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:41:09,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-14 22:41:09,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:41:09,251 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:41:09,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 22:41:09,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:41:09,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-14 22:41:09,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:41:09,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:41:09,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:41:09,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:41:09,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:41:09,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 22:41:09,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:41:09,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-14 22:41:09,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:41:09,531 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:41:09,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:41:09,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:41:09,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-14 22:41:09,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:41:09,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-14 22:41:09,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:41:09,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:41:09,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:41:09,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-14 22:41:09,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:41:09,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 214 [2020-10-14 22:41:09,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:41:09,849 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:41:09,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:41:09,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:41:09,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-14 22:41:09,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:41:09,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2020-10-14 22:41:09,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:41:09,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:41:10,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:41:10,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 22:41:10,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:41:10,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 22:41:10,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:41:10,009 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:41:10,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:41:10,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-14 22:41:10,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:41:10,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:41:10,226 INFO L134 CoverageAnalysis]: Checked inductivity of 512 backedges. 50 proven. 448 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-14 22:41:10,226 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [146206676] [2020-10-14 22:41:10,226 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:41:10,227 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 22:41:10,227 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060756723] [2020-10-14 22:41:10,227 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 22:41:10,228 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:41:10,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 22:41:10,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-10-14 22:41:10,228 INFO L87 Difference]: Start difference. First operand 15698 states and 18911 transitions. Second operand 11 states. [2020-10-14 22:41:17,955 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 43 [2020-10-14 22:41:30,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:41:30,452 INFO L93 Difference]: Finished difference Result 32559 states and 39510 transitions. [2020-10-14 22:41:30,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-14 22:41:30,454 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 370 [2020-10-14 22:41:30,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:41:30,502 INFO L225 Difference]: With dead ends: 32559 [2020-10-14 22:41:30,502 INFO L226 Difference]: Without dead ends: 17735 [2020-10-14 22:41:30,527 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=177, Invalid=525, Unknown=0, NotChecked=0, Total=702 [2020-10-14 22:41:30,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17735 states. [2020-10-14 22:41:30,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17735 to 17463. [2020-10-14 22:41:30,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17463 states. [2020-10-14 22:41:30,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17463 states to 17463 states and 20834 transitions. [2020-10-14 22:41:30,838 INFO L78 Accepts]: Start accepts. Automaton has 17463 states and 20834 transitions. Word has length 370 [2020-10-14 22:41:30,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:41:30,839 INFO L479 AbstractCegarLoop]: Abstraction has 17463 states and 20834 transitions. [2020-10-14 22:41:30,839 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 22:41:30,839 INFO L276 IsEmpty]: Start isEmpty. Operand 17463 states and 20834 transitions. [2020-10-14 22:41:30,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2020-10-14 22:41:30,847 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:41:30,847 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:41:30,847 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 22:41:30,848 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:41:30,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:41:30,850 INFO L82 PathProgramCache]: Analyzing trace with hash -275847705, now seen corresponding path program 1 times [2020-10-14 22:41:30,850 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:41:30,850 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1612038657] [2020-10-14 22:41:30,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:41:30,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:41:30,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:41:31,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:41:31,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:41:33,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:41:33,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 388 [2020-10-14 22:41:33,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 22:41:33,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2217 [2020-10-14 22:41:33,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:41:33,145 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:41:33,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:41:33,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 294 [2020-10-14 22:41:33,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-14 22:41:33,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:41:33,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:41:33,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:41:33,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:41:33,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:41:33,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:41:33,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:41:33,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 22:41:33,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:41:33,235 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:41:33,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:41:33,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:41:33,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:41:33,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:41:33,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:41:33,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:41:33,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:41:33,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:41:33,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:41:33,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:41:33,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 22:41:33,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:41:33,281 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:41:33,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:41:33,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:41:33,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:41:33,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:41:33,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:41:33,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:41:33,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:41:33,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:41:33,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 22:41:33,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:41:33,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 22:41:33,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:41:33,319 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:41:33,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:41:33,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:41:33,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:41:33,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:41:33,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-14 22:41:33,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:41:33,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:41:33,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:41:33,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-14 22:41:33,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:41:33,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-14 22:41:33,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:41:33,408 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:41:33,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:41:33,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:41:33,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-14 22:41:33,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:41:33,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2020-10-14 22:41:33,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:41:33,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:41:33,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:41:33,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 22:41:33,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:41:33,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-14 22:41:33,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:41:33,498 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:41:33,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:41:33,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:41:33,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 22:41:33,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:41:33,611 INFO L134 CoverageAnalysis]: Checked inductivity of 524 backedges. 266 proven. 2 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2020-10-14 22:41:33,611 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1612038657] [2020-10-14 22:41:33,611 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:41:33,612 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:41:33,612 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509166961] [2020-10-14 22:41:33,612 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:41:33,613 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:41:33,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:41:33,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:41:33,613 INFO L87 Difference]: Start difference. First operand 17463 states and 20834 transitions. Second operand 7 states. [2020-10-14 22:41:45,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:41:45,553 INFO L93 Difference]: Finished difference Result 43984 states and 53391 transitions. [2020-10-14 22:41:45,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 22:41:45,555 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 372 [2020-10-14 22:41:45,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:41:45,610 INFO L225 Difference]: With dead ends: 43984 [2020-10-14 22:41:45,610 INFO L226 Difference]: Without dead ends: 25939 [2020-10-14 22:41:45,630 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 22:41:45,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25939 states. [2020-10-14 22:41:45,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25939 to 25396. [2020-10-14 22:41:45,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25396 states. [2020-10-14 22:41:45,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25396 states to 25396 states and 30034 transitions. [2020-10-14 22:41:45,992 INFO L78 Accepts]: Start accepts. Automaton has 25396 states and 30034 transitions. Word has length 372 [2020-10-14 22:41:45,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:41:45,993 INFO L479 AbstractCegarLoop]: Abstraction has 25396 states and 30034 transitions. [2020-10-14 22:41:45,993 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:41:45,993 INFO L276 IsEmpty]: Start isEmpty. Operand 25396 states and 30034 transitions. [2020-10-14 22:41:46,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 451 [2020-10-14 22:41:46,002 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:41:46,002 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:41:46,003 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 22:41:46,003 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:41:46,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:41:46,003 INFO L82 PathProgramCache]: Analyzing trace with hash -46330121, now seen corresponding path program 1 times [2020-10-14 22:41:46,003 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:41:46,004 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [162304265] [2020-10-14 22:41:46,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:41:46,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:41:46,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:41:46,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:41:47,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:41:47,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 468 [2020-10-14 22:41:47,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:41:47,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1837 [2020-10-14 22:41:47,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:41:47,923 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:41:47,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:41:47,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 294 [2020-10-14 22:41:47,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 22:41:47,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:41:48,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:41:48,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:41:48,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:41:48,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:41:48,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:41:48,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:41:48,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 22:41:48,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:41:48,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:41:48,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:41:48,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:41:48,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:41:48,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:41:48,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:41:48,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:41:48,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:41:48,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:41:48,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:41:48,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:41:48,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 22:41:48,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:41:48,047 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:41:48,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:41:48,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:41:48,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:41:48,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:41:48,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:41:48,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:41:48,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:41:48,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:41:48,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 22:41:48,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:41:48,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 22:41:48,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:41:48,077 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:41:48,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:41:48,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:41:48,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:41:48,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:41:48,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-14 22:41:48,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:41:48,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:41:48,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:41:48,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-14 22:41:48,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:41:48,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-14 22:41:48,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:41:48,164 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:41:48,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:41:48,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:41:48,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-14 22:41:48,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:41:48,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2020-10-14 22:41:48,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:41:48,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:41:48,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:41:48,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-14 22:41:48,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:41:48,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-14 22:41:48,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:41:48,258 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:41:48,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:41:48,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:41:48,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-14 22:41:48,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:41:48,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 366 [2020-10-14 22:41:48,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:41:48,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:41:48,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:41:48,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 22:41:48,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:41:48,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-14 22:41:48,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:41:48,344 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:41:48,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:41:48,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-14 22:41:48,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:41:48,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:41:48,455 INFO L134 CoverageAnalysis]: Checked inductivity of 843 backedges. 297 proven. 74 refuted. 0 times theorem prover too weak. 472 trivial. 0 not checked. [2020-10-14 22:41:48,456 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [162304265] [2020-10-14 22:41:48,456 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:41:48,456 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:41:48,456 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863161900] [2020-10-14 22:41:48,457 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:41:48,457 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:41:48,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:41:48,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:41:48,457 INFO L87 Difference]: Start difference. First operand 25396 states and 30034 transitions. Second operand 7 states. [2020-10-14 22:42:03,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:42:03,102 INFO L93 Difference]: Finished difference Result 60671 states and 72849 transitions. [2020-10-14 22:42:03,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 22:42:03,105 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 450 [2020-10-14 22:42:03,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:42:03,188 INFO L225 Difference]: With dead ends: 60671 [2020-10-14 22:42:03,189 INFO L226 Difference]: Without dead ends: 36149 [2020-10-14 22:42:03,226 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 22:42:03,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36149 states. [2020-10-14 22:42:03,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36149 to 33921. [2020-10-14 22:42:03,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33921 states. [2020-10-14 22:42:03,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33921 states to 33921 states and 40190 transitions. [2020-10-14 22:42:03,846 INFO L78 Accepts]: Start accepts. Automaton has 33921 states and 40190 transitions. Word has length 450 [2020-10-14 22:42:03,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:42:03,847 INFO L479 AbstractCegarLoop]: Abstraction has 33921 states and 40190 transitions. [2020-10-14 22:42:03,847 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:42:03,847 INFO L276 IsEmpty]: Start isEmpty. Operand 33921 states and 40190 transitions. [2020-10-14 22:42:03,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 473 [2020-10-14 22:42:03,856 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:42:03,857 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:42:03,857 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 22:42:03,857 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:42:03,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:42:03,857 INFO L82 PathProgramCache]: Analyzing trace with hash -758617109, now seen corresponding path program 1 times [2020-10-14 22:42:03,858 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:42:03,858 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [941241187] [2020-10-14 22:42:03,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:42:03,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:42:04,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:42:04,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking...