/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label23.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 03:59:59,567 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 03:59:59,571 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 03:59:59,630 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 03:59:59,631 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 03:59:59,646 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 03:59:59,647 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 03:59:59,651 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 03:59:59,655 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 03:59:59,658 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 03:59:59,659 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 03:59:59,665 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 03:59:59,666 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 03:59:59,671 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 03:59:59,675 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 03:59:59,679 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 03:59:59,682 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 03:59:59,685 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 03:59:59,688 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 03:59:59,698 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 03:59:59,703 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 03:59:59,704 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 03:59:59,707 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 03:59:59,708 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 03:59:59,713 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 03:59:59,713 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 03:59:59,714 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 03:59:59,718 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 03:59:59,719 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 03:59:59,720 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 03:59:59,720 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 03:59:59,721 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 03:59:59,722 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 03:59:59,723 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 03:59:59,725 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 03:59:59,725 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 03:59:59,726 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 03:59:59,727 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 03:59:59,727 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 03:59:59,729 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 03:59:59,731 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 03:59:59,732 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 03:59:59,792 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 03:59:59,793 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 03:59:59,797 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 03:59:59,797 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 03:59:59,797 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 03:59:59,798 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 03:59:59,798 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 03:59:59,799 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 03:59:59,799 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 03:59:59,799 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 03:59:59,800 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 03:59:59,801 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 03:59:59,801 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 03:59:59,801 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 03:59:59,802 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 03:59:59,802 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 03:59:59,802 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 03:59:59,803 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 03:59:59,803 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 03:59:59,803 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 03:59:59,803 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 03:59:59,804 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 03:59:59,804 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 03:59:59,804 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 03:59:59,804 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 03:59:59,805 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 03:59:59,805 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 03:59:59,805 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 03:59:59,805 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 03:59:59,805 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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 04:00:00,181 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 04:00:00,217 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 04:00:00,223 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 04:00:00,226 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 04:00:00,227 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 04:00:00,228 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label23.c [2020-10-14 04:00:00,319 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/15affd68e/01fcc122a52740728e8170c6e9d0c1d5/FLAG7efb52ba2 [2020-10-14 04:00:01,181 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 04:00:01,182 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem17_label23.c [2020-10-14 04:00:01,213 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/15affd68e/01fcc122a52740728e8170c6e9d0c1d5/FLAG7efb52ba2 [2020-10-14 04:00:01,706 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/15affd68e/01fcc122a52740728e8170c6e9d0c1d5 [2020-10-14 04:00:01,719 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 04:00:01,721 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 04:00:01,726 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 04:00:01,726 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 04:00:01,730 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 04:00:01,732 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:00:01" (1/1) ... [2020-10-14 04:00:01,736 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62c9e9a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:00:01, skipping insertion in model container [2020-10-14 04:00:01,737 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:00:01" (1/1) ... [2020-10-14 04:00:01,749 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 04:00:01,869 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 04:00:03,230 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:00:03,242 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 04:00:03,757 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:00:03,786 INFO L208 MainTranslator]: Completed translation [2020-10-14 04:00:03,788 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:00:03 WrapperNode [2020-10-14 04:00:03,789 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 04:00:03,790 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 04:00:03,790 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 04:00:03,790 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 04:00:03,809 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:00:03" (1/1) ... [2020-10-14 04:00:03,811 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:00:03" (1/1) ... [2020-10-14 04:00:03,880 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:00:03" (1/1) ... [2020-10-14 04:00:03,880 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:00:03" (1/1) ... [2020-10-14 04:00:03,971 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:00:03" (1/1) ... [2020-10-14 04:00:03,994 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:00:03" (1/1) ... [2020-10-14 04:00:04,022 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:00:03" (1/1) ... [2020-10-14 04:00:04,043 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 04:00:04,044 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 04:00:04,044 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 04:00:04,044 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 04:00:04,046 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:00:03" (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 04:00:04,122 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 04:00:04,123 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 04:00:04,123 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 04:00:04,123 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 04:00:04,123 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 04:00:04,123 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 04:00:04,123 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 04:00:04,124 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 04:00:04,124 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 04:00:04,124 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 04:00:04,124 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 04:00:04,125 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 04:00:04,125 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 04:00:11,307 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 04:00:11,307 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 04:00:11,317 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:00:11 BoogieIcfgContainer [2020-10-14 04:00:11,318 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 04:00:11,319 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 04:00:11,320 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 04:00:11,323 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 04:00:11,324 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 04:00:01" (1/3) ... [2020-10-14 04:00:11,325 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14908213 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:00:11, skipping insertion in model container [2020-10-14 04:00:11,325 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:00:03" (2/3) ... [2020-10-14 04:00:11,325 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14908213 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:00:11, skipping insertion in model container [2020-10-14 04:00:11,325 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:00:11" (3/3) ... [2020-10-14 04:00:11,327 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem17_label23.c [2020-10-14 04:00:11,339 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 04:00:11,349 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 04:00:11,364 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 04:00:11,395 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 04:00:11,395 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 04:00:11,395 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 04:00:11,395 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 04:00:11,396 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 04:00:11,396 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 04:00:11,396 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 04:00:11,396 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 04:00:11,429 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states. [2020-10-14 04:00:11,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-14 04:00:11,437 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:00:11,439 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:00:11,439 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:00:11,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:00:11,446 INFO L82 PathProgramCache]: Analyzing trace with hash -722690823, now seen corresponding path program 1 times [2020-10-14 04:00:11,455 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:00:11,456 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1795099025] [2020-10-14 04:00:11,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:00:11,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:00:11,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:00:11,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:00:11,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-14 04:00:11,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:00:11,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 349 [2020-10-14 04:00:11,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:00:11,970 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:00:11,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:00:11,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 04:00:11,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 04:00:11,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 04:00:12,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:00:12,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:00:12,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:00:12,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:00:12,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:00:12,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:00:12,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 04:00:12,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:00:12,150 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:00:12,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:00:12,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:00:12,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 04:00:12,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:00:12,169 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 04:00:12,170 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1795099025] [2020-10-14 04:00:12,172 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:00:12,173 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 04:00:12,174 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586752999] [2020-10-14 04:00:12,180 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 04:00:12,181 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:00:12,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 04:00:12,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 04:00:12,199 INFO L87 Difference]: Start difference. First operand 603 states. Second operand 4 states. [2020-10-14 04:00:24,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:00:24,876 INFO L93 Difference]: Finished difference Result 1692 states and 3091 transitions. [2020-10-14 04:00:24,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:00:24,878 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2020-10-14 04:00:24,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:00:24,908 INFO L225 Difference]: With dead ends: 1692 [2020-10-14 04:00:24,908 INFO L226 Difference]: Without dead ends: 1012 [2020-10-14 04:00:24,926 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:00:24,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1012 states. [2020-10-14 04:00:25,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1012 to 1002. [2020-10-14 04:00:25,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1002 states. [2020-10-14 04:00:25,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1002 states to 1002 states and 1542 transitions. [2020-10-14 04:00:25,109 INFO L78 Accepts]: Start accepts. Automaton has 1002 states and 1542 transitions. Word has length 27 [2020-10-14 04:00:25,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:00:25,109 INFO L479 AbstractCegarLoop]: Abstraction has 1002 states and 1542 transitions. [2020-10-14 04:00:25,110 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 04:00:25,110 INFO L276 IsEmpty]: Start isEmpty. Operand 1002 states and 1542 transitions. [2020-10-14 04:00:25,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-14 04:00:25,115 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:00:25,116 INFO L422 BasicCegarLoop]: trace histogram [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, 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 04:00:25,116 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 04:00:25,116 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:00:25,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:00:25,117 INFO L82 PathProgramCache]: Analyzing trace with hash 237141423, now seen corresponding path program 1 times [2020-10-14 04:00:25,118 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:00:25,118 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1790684438] [2020-10-14 04:00:25,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:00:25,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:00:25,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:00:25,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:00:26,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:00:26,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:00:26,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-14 04:00:26,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:00:26,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 998 [2020-10-14 04:00:26,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:00:26,170 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:00:26,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:00:26,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-14 04:00:26,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 04:00:26,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 04:00:26,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:00:26,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:00:26,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:00:26,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:00:26,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:00:26,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:00:26,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 04:00:26,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:00:26,264 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:00:26,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:00:26,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:00:26,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:00:26,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:00:26,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:00:26,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:00:26,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:00:26,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:00:26,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 04:00:26,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:00:26,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-10-14 04:00:26,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:00:26,464 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:00:26,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:00:26,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:00:26,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-14 04:00:26,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:00:26,524 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:00:26,525 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1790684438] [2020-10-14 04:00:26,525 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:00:26,525 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:00:26,526 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481220982] [2020-10-14 04:00:26,529 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:00:26,529 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:00:26,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:00:26,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:00:26,530 INFO L87 Difference]: Start difference. First operand 1002 states and 1542 transitions. Second operand 5 states. [2020-10-14 04:00:36,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:00:36,496 INFO L93 Difference]: Finished difference Result 2884 states and 4479 transitions. [2020-10-14 04:00:36,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:00:36,499 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 98 [2020-10-14 04:00:36,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:00:36,511 INFO L225 Difference]: With dead ends: 2884 [2020-10-14 04:00:36,511 INFO L226 Difference]: Without dead ends: 1888 [2020-10-14 04:00:36,515 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:00:36,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1888 states. [2020-10-14 04:00:36,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1888 to 1884. [2020-10-14 04:00:36,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1884 states. [2020-10-14 04:00:36,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1884 states to 1884 states and 2587 transitions. [2020-10-14 04:00:36,586 INFO L78 Accepts]: Start accepts. Automaton has 1884 states and 2587 transitions. Word has length 98 [2020-10-14 04:00:36,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:00:36,587 INFO L479 AbstractCegarLoop]: Abstraction has 1884 states and 2587 transitions. [2020-10-14 04:00:36,587 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:00:36,587 INFO L276 IsEmpty]: Start isEmpty. Operand 1884 states and 2587 transitions. [2020-10-14 04:00:36,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-14 04:00:36,590 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:00:36,590 INFO L422 BasicCegarLoop]: trace histogram [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, 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 04:00:36,591 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 04:00:36,591 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:00:36,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:00:36,591 INFO L82 PathProgramCache]: Analyzing trace with hash 33614273, now seen corresponding path program 1 times [2020-10-14 04:00:36,592 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:00:36,592 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [103163936] [2020-10-14 04:00:36,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:00:36,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:00:36,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:00:36,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:00:36,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-14 04:00:36,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:00:36,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 291 [2020-10-14 04:00:36,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:00:36,928 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:00:36,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:00:36,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-14 04:00:36,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 04:00:36,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:00:37,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:00:37,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:00:37,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:00:37,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:00:37,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:00:37,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:00:37,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:00:37,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:00:37,048 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:00:37,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:00:37,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:00:37,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:00:37,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 04:00:37,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:00:37,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:00:37,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:00:37,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:00:37,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 04:00:37,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:00:37,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-14 04:00:37,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:00:37,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:00:37,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:00:37,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:00:37,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-14 04:00:37,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:00:37,286 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:00:37,286 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [103163936] [2020-10-14 04:00:37,287 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:00:37,287 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:00:37,287 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671991058] [2020-10-14 04:00:37,288 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:00:37,288 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:00:37,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:00:37,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:00:37,289 INFO L87 Difference]: Start difference. First operand 1884 states and 2587 transitions. Second operand 5 states. [2020-10-14 04:00:47,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:00:47,259 INFO L93 Difference]: Finished difference Result 4659 states and 6588 transitions. [2020-10-14 04:00:47,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:00:47,261 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 101 [2020-10-14 04:00:47,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:00:47,277 INFO L225 Difference]: With dead ends: 4659 [2020-10-14 04:00:47,278 INFO L226 Difference]: Without dead ends: 2781 [2020-10-14 04:00:47,284 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:00:47,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2781 states. [2020-10-14 04:00:47,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2781 to 2775. [2020-10-14 04:00:47,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2775 states. [2020-10-14 04:00:47,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2775 states to 2775 states and 3663 transitions. [2020-10-14 04:00:47,361 INFO L78 Accepts]: Start accepts. Automaton has 2775 states and 3663 transitions. Word has length 101 [2020-10-14 04:00:47,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:00:47,362 INFO L479 AbstractCegarLoop]: Abstraction has 2775 states and 3663 transitions. [2020-10-14 04:00:47,363 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:00:47,363 INFO L276 IsEmpty]: Start isEmpty. Operand 2775 states and 3663 transitions. [2020-10-14 04:00:47,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-14 04:00:47,365 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:00:47,366 INFO L422 BasicCegarLoop]: trace histogram [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, 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 04:00:47,366 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 04:00:47,366 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:00:47,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:00:47,367 INFO L82 PathProgramCache]: Analyzing trace with hash -454576961, now seen corresponding path program 1 times [2020-10-14 04:00:47,367 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:00:47,367 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [619247327] [2020-10-14 04:00:47,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:00:47,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:00:47,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:00:47,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:00:48,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:00:48,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-14 04:00:48,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:00:48,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1367 [2020-10-14 04:00:48,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:00:48,774 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:00:48,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:00:48,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-14 04:00:48,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 04:00:48,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-10-14 04:00:48,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:00:48,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:00:48,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:00:48,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:00:48,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:00:48,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:00:48,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:00:48,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:00:48,883 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:00:48,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:00:48,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:00:48,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:00:48,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:00:48,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:00:48,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:00:48,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:00:49,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:00:49,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 04:00:49,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:00:49,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-14 04:00:49,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:00:49,047 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:00:49,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:00:49,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:00:49,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 04:00:49,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:00:49,107 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:00:49,108 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [619247327] [2020-10-14 04:00:49,109 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:00:49,109 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:00:49,109 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230135757] [2020-10-14 04:00:49,111 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:00:49,111 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:00:49,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:00:49,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:00:49,113 INFO L87 Difference]: Start difference. First operand 2775 states and 3663 transitions. Second operand 5 states. [2020-10-14 04:01:04,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:01:04,323 INFO L93 Difference]: Finished difference Result 8201 states and 10950 transitions. [2020-10-14 04:01:04,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:01:04,326 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 106 [2020-10-14 04:01:04,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:01:04,356 INFO L225 Difference]: With dead ends: 8201 [2020-10-14 04:01:04,356 INFO L226 Difference]: Without dead ends: 5432 [2020-10-14 04:01:04,366 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:01:04,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5432 states. [2020-10-14 04:01:04,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5432 to 5407. [2020-10-14 04:01:04,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5407 states. [2020-10-14 04:01:04,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5407 states to 5407 states and 6813 transitions. [2020-10-14 04:01:04,602 INFO L78 Accepts]: Start accepts. Automaton has 5407 states and 6813 transitions. Word has length 106 [2020-10-14 04:01:04,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:01:04,602 INFO L479 AbstractCegarLoop]: Abstraction has 5407 states and 6813 transitions. [2020-10-14 04:01:04,602 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:01:04,603 INFO L276 IsEmpty]: Start isEmpty. Operand 5407 states and 6813 transitions. [2020-10-14 04:01:04,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-14 04:01:04,605 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:01:04,605 INFO L422 BasicCegarLoop]: trace histogram [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, 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 04:01:04,606 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 04:01:04,606 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:01:04,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:01:04,607 INFO L82 PathProgramCache]: Analyzing trace with hash 2095878723, now seen corresponding path program 1 times [2020-10-14 04:01:04,607 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:01:04,607 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1813825031] [2020-10-14 04:01:04,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:01:04,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:01:04,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:01:04,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:01:05,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:01:05,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-14 04:01:05,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:01:05,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 922 [2020-10-14 04:01:05,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:01:05,566 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:01:05,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:01:05,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 107 [2020-10-14 04:01:05,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 04:01:05,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:01:05,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:01:05,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:01:05,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:01:05,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:01:05,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:01:05,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:01:05,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:01:05,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:01:05,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:01:05,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:01:05,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:01:05,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:01:05,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:01:05,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:01:05,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:01:05,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:01:05,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:01:05,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-14 04:01:05,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:01:05,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-14 04:01:05,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:01:05,836 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:01:05,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:01:05,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:01:05,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-14 04:01:05,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:01:05,886 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:01:05,891 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1813825031] [2020-10-14 04:01:05,891 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:01:05,891 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:01:05,892 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809259995] [2020-10-14 04:01:05,894 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:01:05,898 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:01:05,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:01:05,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:01:05,900 INFO L87 Difference]: Start difference. First operand 5407 states and 6813 transitions. Second operand 5 states. [2020-10-14 04:01:21,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:01:21,348 INFO L93 Difference]: Finished difference Result 13025 states and 16886 transitions. [2020-10-14 04:01:21,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:01:21,352 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 124 [2020-10-14 04:01:21,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:01:21,400 INFO L225 Difference]: With dead ends: 13025 [2020-10-14 04:01:21,401 INFO L226 Difference]: Without dead ends: 7624 [2020-10-14 04:01:21,417 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 04:01:21,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7624 states. [2020-10-14 04:01:21,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7624 to 7616. [2020-10-14 04:01:21,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7616 states. [2020-10-14 04:01:21,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7616 states to 7616 states and 9335 transitions. [2020-10-14 04:01:21,631 INFO L78 Accepts]: Start accepts. Automaton has 7616 states and 9335 transitions. Word has length 124 [2020-10-14 04:01:21,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:01:21,633 INFO L479 AbstractCegarLoop]: Abstraction has 7616 states and 9335 transitions. [2020-10-14 04:01:21,633 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:01:21,633 INFO L276 IsEmpty]: Start isEmpty. Operand 7616 states and 9335 transitions. [2020-10-14 04:01:21,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-14 04:01:21,636 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:01:21,636 INFO L422 BasicCegarLoop]: trace histogram [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, 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 04:01:21,636 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 04:01:21,637 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:01:21,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:01:21,637 INFO L82 PathProgramCache]: Analyzing trace with hash 741633355, now seen corresponding path program 1 times [2020-10-14 04:01:21,637 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:01:21,638 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1985871366] [2020-10-14 04:01:21,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:01:21,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:01:21,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:01:21,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:01:22,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:01:22,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:01:23,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:01:23,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:01:26,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:01:26,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-14 04:01:26,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 04:01:26,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-14 04:01:26,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:01:26,703 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:01:26,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:01:26,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 109 [2020-10-14 04:01:26,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 04:01:26,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:01:26,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:01:26,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:01:26,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:01:26,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:01:26,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:01:26,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:01:26,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 04:01:26,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:01:26,795 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:01:26,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:01:26,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:01:26,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:01:26,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:01:26,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:01:26,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:01:26,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:01:26,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:01:26,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-14 04:01:26,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:01:26,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-14 04:01:26,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:01:26,943 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:01:26,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:01:26,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:01:26,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-14 04:01:26,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:01:26,991 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:01:26,991 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1985871366] [2020-10-14 04:01:26,993 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:01:26,993 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:01:26,993 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246017175] [2020-10-14 04:01:26,994 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:01:26,994 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:01:26,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:01:26,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:01:26,994 INFO L87 Difference]: Start difference. First operand 7616 states and 9335 transitions. Second operand 5 states. [2020-10-14 04:01:49,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:01:49,231 INFO L93 Difference]: Finished difference Result 20051 states and 25154 transitions. [2020-10-14 04:01:49,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:01:49,233 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 128 [2020-10-14 04:01:49,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:01:49,290 INFO L225 Difference]: With dead ends: 20051 [2020-10-14 04:01:49,290 INFO L226 Difference]: Without dead ends: 12441 [2020-10-14 04:01:49,311 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 04:01:49,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12441 states. [2020-10-14 04:01:49,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12441 to 12004. [2020-10-14 04:01:49,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12004 states. [2020-10-14 04:01:49,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12004 states to 12004 states and 14504 transitions. [2020-10-14 04:01:49,665 INFO L78 Accepts]: Start accepts. Automaton has 12004 states and 14504 transitions. Word has length 128 [2020-10-14 04:01:49,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:01:49,666 INFO L479 AbstractCegarLoop]: Abstraction has 12004 states and 14504 transitions. [2020-10-14 04:01:49,666 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:01:49,666 INFO L276 IsEmpty]: Start isEmpty. Operand 12004 states and 14504 transitions. [2020-10-14 04:01:49,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-10-14 04:01:49,668 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:01:49,669 INFO L422 BasicCegarLoop]: trace histogram [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, 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 04:01:49,669 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 04:01:49,670 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:01:49,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:01:49,670 INFO L82 PathProgramCache]: Analyzing trace with hash -281280729, now seen corresponding path program 1 times [2020-10-14 04:01:49,670 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:01:49,671 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2104872824] [2020-10-14 04:01:49,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:01:49,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:01:49,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:01:49,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:01:50,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:01:50,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-14 04:01:50,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:01:50,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 921 [2020-10-14 04:01:50,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:01:50,634 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:01:50,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:01:50,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 112 [2020-10-14 04:01:50,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 04:01:50,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:01:50,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:01:50,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:01:50,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:01:50,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:01:50,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:01:50,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:01:50,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 04:01:50,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:01:50,729 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:01:50,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:01:50,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:01:50,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:01:50,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:01:50,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:01:50,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:01:50,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:01:50,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:01:50,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-14 04:01:50,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:01:50,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-10-14 04:01:50,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:01:50,936 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:01:50,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:01:50,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:01:50,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-14 04:01:50,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:01:51,009 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:01:51,010 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2104872824] [2020-10-14 04:01:51,010 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:01:51,010 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:01:51,012 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033494881] [2020-10-14 04:01:51,013 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:01:51,013 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:01:51,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:01:51,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:01:51,014 INFO L87 Difference]: Start difference. First operand 12004 states and 14504 transitions. Second operand 5 states. [2020-10-14 04:02:09,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:02:09,691 INFO L93 Difference]: Finished difference Result 29253 states and 36214 transitions. [2020-10-14 04:02:09,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:02:09,693 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 129 [2020-10-14 04:02:09,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:02:09,769 INFO L225 Difference]: With dead ends: 29253 [2020-10-14 04:02:09,769 INFO L226 Difference]: Without dead ends: 17255 [2020-10-14 04:02:09,800 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 04:02:09,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17255 states. [2020-10-14 04:02:10,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17255 to 15514. [2020-10-14 04:02:10,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15514 states. [2020-10-14 04:02:10,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15514 states to 15514 states and 19439 transitions. [2020-10-14 04:02:10,206 INFO L78 Accepts]: Start accepts. Automaton has 15514 states and 19439 transitions. Word has length 129 [2020-10-14 04:02:10,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:02:10,206 INFO L479 AbstractCegarLoop]: Abstraction has 15514 states and 19439 transitions. [2020-10-14 04:02:10,207 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:02:10,207 INFO L276 IsEmpty]: Start isEmpty. Operand 15514 states and 19439 transitions. [2020-10-14 04:02:10,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-10-14 04:02:10,210 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:02:10,211 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:02:10,211 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 04:02:10,211 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:02:10,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:02:10,212 INFO L82 PathProgramCache]: Analyzing trace with hash 2144083657, now seen corresponding path program 1 times [2020-10-14 04:02:10,212 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:02:10,212 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2127229430] [2020-10-14 04:02:10,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:02:10,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:02:10,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:02:10,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:02:11,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:02:11,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-10-14 04:02:11,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:02:11,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1256 [2020-10-14 04:02:11,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:02:11,516 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:02:11,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:02:11,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 138 [2020-10-14 04:02:11,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 04:02:11,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:02:11,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:02:11,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:02:11,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:02:11,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:02:11,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:02:11,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:02:11,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:02:11,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:02:11,641 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:02:11,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:02:11,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:02:11,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:02:11,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:02:11,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:02:11,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:02:11,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:02:11,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:02:11,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-14 04:02:11,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:02:11,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-14 04:02:11,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:02:11,853 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:02:11,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:02:11,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:02:11,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-14 04:02:11,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:02:11,927 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:02:11,928 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2127229430] [2020-10-14 04:02:11,928 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:02:11,928 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:02:11,929 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991838678] [2020-10-14 04:02:11,929 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:02:11,929 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:02:11,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:02:11,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:02:11,930 INFO L87 Difference]: Start difference. First operand 15514 states and 19439 transitions. Second operand 5 states. [2020-10-14 04:02:30,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:02:30,468 INFO L93 Difference]: Finished difference Result 37173 states and 47632 transitions. [2020-10-14 04:02:30,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:02:30,472 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 155 [2020-10-14 04:02:30,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:02:30,568 INFO L225 Difference]: With dead ends: 37173 [2020-10-14 04:02:30,569 INFO L226 Difference]: Without dead ends: 21665 [2020-10-14 04:02:30,610 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 04:02:30,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21665 states. [2020-10-14 04:02:31,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21665 to 20769. [2020-10-14 04:02:31,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20769 states. [2020-10-14 04:02:31,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20769 states to 20769 states and 25995 transitions. [2020-10-14 04:02:31,103 INFO L78 Accepts]: Start accepts. Automaton has 20769 states and 25995 transitions. Word has length 155 [2020-10-14 04:02:31,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:02:31,104 INFO L479 AbstractCegarLoop]: Abstraction has 20769 states and 25995 transitions. [2020-10-14 04:02:31,104 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:02:31,104 INFO L276 IsEmpty]: Start isEmpty. Operand 20769 states and 25995 transitions. [2020-10-14 04:02:31,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-10-14 04:02:31,108 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:02:31,108 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 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 04:02:31,109 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 04:02:31,109 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:02:31,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:02:31,110 INFO L82 PathProgramCache]: Analyzing trace with hash 643759726, now seen corresponding path program 1 times [2020-10-14 04:02:31,110 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:02:31,111 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [407734281] [2020-10-14 04:02:31,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:02:31,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:02:31,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:02:31,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:02:31,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:02:32,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:02:32,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:02:32,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:02:32,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-10-14 04:02:32,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 04:02:32,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1810 [2020-10-14 04:02:32,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:02:32,970 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:02:32,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:02:32,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 152 [2020-10-14 04:02:32,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 04:02:32,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:02:33,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:02:33,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:02:33,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:02:33,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:02:33,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:02:33,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:02:33,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 04:02:33,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:02:33,063 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:02:33,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:02:33,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:02:33,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:02:33,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:02:33,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:02:33,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:02:33,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:02:33,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:02:33,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-14 04:02:33,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:02:33,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-10-14 04:02:33,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:02:33,283 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:02:33,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:02:33,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 137 [2020-10-14 04:02:33,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 04:02:33,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:02:33,443 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:02:33,450 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [407734281] [2020-10-14 04:02:33,451 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:02:33,452 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 04:02:33,452 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195826179] [2020-10-14 04:02:33,453 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:02:33,453 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:02:33,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:02:33,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:02:33,454 INFO L87 Difference]: Start difference. First operand 20769 states and 25995 transitions. Second operand 5 states. [2020-10-14 04:02:52,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:02:52,836 INFO L93 Difference]: Finished difference Result 48984 states and 63315 transitions. [2020-10-14 04:02:52,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:02:52,842 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 171 [2020-10-14 04:02:52,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:02:52,947 INFO L225 Difference]: With dead ends: 48984 [2020-10-14 04:02:52,947 INFO L226 Difference]: Without dead ends: 28221 [2020-10-14 04:02:52,993 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:02:53,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28221 states. [2020-10-14 04:02:53,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28221 to 26475. [2020-10-14 04:02:53,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26475 states. [2020-10-14 04:02:53,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26475 states to 26475 states and 32902 transitions. [2020-10-14 04:02:53,774 INFO L78 Accepts]: Start accepts. Automaton has 26475 states and 32902 transitions. Word has length 171 [2020-10-14 04:02:53,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:02:53,774 INFO L479 AbstractCegarLoop]: Abstraction has 26475 states and 32902 transitions. [2020-10-14 04:02:53,775 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:02:53,775 INFO L276 IsEmpty]: Start isEmpty. Operand 26475 states and 32902 transitions. [2020-10-14 04:02:53,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-10-14 04:02:53,782 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:02:53,783 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-10-14 04:02:53,783 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 04:02:53,783 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:02:53,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:02:53,784 INFO L82 PathProgramCache]: Analyzing trace with hash 2114559493, now seen corresponding path program 1 times [2020-10-14 04:02:53,784 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:02:53,784 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1306155840] [2020-10-14 04:02:53,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:02:53,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:02:53,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:02:53,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:02:54,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:02:54,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:02:58,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:02:58,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-14 04:02:58,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 04:02:58,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4463 [2020-10-14 04:02:58,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:02:58,295 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:02:58,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:02:58,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-14 04:02:58,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-14 04:02:58,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:02:58,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:02:58,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:02:58,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:02:58,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:02:58,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:02:58,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:02:58,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:02:58,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:02:58,430 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:02:58,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:02:58,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:02:58,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:02:58,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:02:58,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:02:58,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:02:58,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:02:58,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:02:58,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 04:02:58,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:02:58,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-14 04:02:58,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:02:58,602 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:02:58,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:02:58,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:02:58,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-14 04:02:58,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:02:58,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-14 04:02:58,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:02:58,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:02:58,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:02:58,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-14 04:02:58,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:02:58,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-10-14 04:02:58,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:02:58,815 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:02:58,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:02:58,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:02:58,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-14 04:02:58,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:02:58,936 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 108 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 04:02:58,937 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1306155840] [2020-10-14 04:02:58,937 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:02:58,937 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:02:58,938 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066862692] [2020-10-14 04:02:58,938 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:02:58,938 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:02:58,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:02:58,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:02:58,939 INFO L87 Difference]: Start difference. First operand 26475 states and 32902 transitions. Second operand 7 states. [2020-10-14 04:03:26,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:03:26,259 INFO L93 Difference]: Finished difference Result 57882 states and 72288 transitions. [2020-10-14 04:03:26,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 04:03:26,265 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 175 [2020-10-14 04:03:26,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:03:26,380 INFO L225 Difference]: With dead ends: 57882 [2020-10-14 04:03:26,381 INFO L226 Difference]: Without dead ends: 24826 [2020-10-14 04:03:26,452 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:03:26,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24826 states. [2020-10-14 04:03:28,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24826 to 21783. [2020-10-14 04:03:28,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21783 states. [2020-10-14 04:03:28,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21783 states to 21783 states and 25431 transitions. [2020-10-14 04:03:28,168 INFO L78 Accepts]: Start accepts. Automaton has 21783 states and 25431 transitions. Word has length 175 [2020-10-14 04:03:28,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:03:28,168 INFO L479 AbstractCegarLoop]: Abstraction has 21783 states and 25431 transitions. [2020-10-14 04:03:28,168 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:03:28,168 INFO L276 IsEmpty]: Start isEmpty. Operand 21783 states and 25431 transitions. [2020-10-14 04:03:28,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-10-14 04:03:28,170 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:03:28,170 INFO L422 BasicCegarLoop]: trace histogram [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, 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 04:03:28,170 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 04:03:28,171 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:03:28,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:03:28,171 INFO L82 PathProgramCache]: Analyzing trace with hash 127685921, now seen corresponding path program 1 times [2020-10-14 04:03:28,171 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:03:28,172 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1732767926] [2020-10-14 04:03:28,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:03:28,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:03:28,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:03:28,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:03:28,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:03:31,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:03:32,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:03:32,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-14 04:03:32,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 04:03:32,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4598 [2020-10-14 04:03:32,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:03:32,825 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:03:32,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:03:32,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 174 [2020-10-14 04:03:32,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 04:03:32,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:03:32,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:03:32,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:03:32,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:03:32,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:03:32,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:03:32,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:03:32,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:03:33,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:03:33,000 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:03:33,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:03:33,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:03:33,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:03:33,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:03:33,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:03:33,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:03:33,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:03:33,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:03:33,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 04:03:33,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:03:33,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-14 04:03:33,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:03:33,099 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:03:33,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:03:33,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:03:33,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:03:33,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:03:33,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 04:03:33,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:03:33,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:03:33,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:03:33,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 04:03:33,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:03:33,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-14 04:03:33,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:03:33,244 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:03:33,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:03:33,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:03:33,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 04:03:33,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:03:33,310 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 41 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-10-14 04:03:33,310 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1732767926] [2020-10-14 04:03:33,311 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:03:33,311 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:03:33,312 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368157484] [2020-10-14 04:03:33,312 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:03:33,313 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:03:33,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:03:33,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:03:33,313 INFO L87 Difference]: Start difference. First operand 21783 states and 25431 transitions. Second operand 5 states.