/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem03_label07.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 19:08:18,752 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 19:08:18,755 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 19:08:18,789 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 19:08:18,789 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 19:08:18,797 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 19:08:18,799 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 19:08:18,802 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 19:08:18,805 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 19:08:18,808 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 19:08:18,809 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 19:08:18,810 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 19:08:18,810 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 19:08:18,813 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 19:08:18,816 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 19:08:18,818 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 19:08:18,820 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 19:08:18,821 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 19:08:18,823 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 19:08:18,831 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 19:08:18,833 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 19:08:18,834 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 19:08:18,835 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 19:08:18,836 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 19:08:18,852 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 19:08:18,853 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 19:08:18,853 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 19:08:18,854 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 19:08:18,857 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 19:08:18,859 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 19:08:18,859 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 19:08:18,859 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 19:08:18,863 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 19:08:18,864 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 19:08:18,868 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 19:08:18,868 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 19:08:18,869 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 19:08:18,869 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 19:08:18,869 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 19:08:18,870 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 19:08:18,871 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 19:08:18,872 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 19:08:18,911 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 19:08:18,911 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 19:08:18,914 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 19:08:18,914 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 19:08:18,914 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 19:08:18,914 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 19:08:18,915 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 19:08:18,915 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 19:08:18,915 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 19:08:18,915 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 19:08:18,917 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 19:08:18,917 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 19:08:18,917 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 19:08:18,917 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 19:08:18,918 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 19:08:18,918 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 19:08:18,918 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 19:08:18,918 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 19:08:18,918 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 19:08:18,919 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 19:08:18,919 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 19:08:18,919 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 19:08:18,919 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 19:08:18,920 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 19:08:18,920 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 19:08:18,920 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 19:08:18,920 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 19:08:18,920 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 19:08:18,920 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 19:08:18,921 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 19:08:19,251 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 19:08:19,264 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 19:08:19,275 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 19:08:19,278 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 19:08:19,278 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 19:08:19,279 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label07.c [2020-10-14 19:08:19,360 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d4b782e5f/86f3d9ba2e9947baa8ef6ece19099576/FLAG0b8130780 [2020-10-14 19:08:20,052 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 19:08:20,053 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem03_label07.c [2020-10-14 19:08:20,071 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d4b782e5f/86f3d9ba2e9947baa8ef6ece19099576/FLAG0b8130780 [2020-10-14 19:08:20,217 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d4b782e5f/86f3d9ba2e9947baa8ef6ece19099576 [2020-10-14 19:08:20,228 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 19:08:20,229 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 19:08:20,230 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 19:08:20,231 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 19:08:20,234 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 19:08:20,235 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:08:20" (1/1) ... [2020-10-14 19:08:20,238 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59b5b041 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:08:20, skipping insertion in model container [2020-10-14 19:08:20,239 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:08:20" (1/1) ... [2020-10-14 19:08:20,247 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 19:08:20,336 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 19:08:21,227 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 19:08:21,237 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 19:08:21,634 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 19:08:21,658 INFO L208 MainTranslator]: Completed translation [2020-10-14 19:08:21,660 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:08:21 WrapperNode [2020-10-14 19:08:21,660 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 19:08:21,661 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 19:08:21,661 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 19:08:21,661 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 19:08:21,676 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:08:21" (1/1) ... [2020-10-14 19:08:21,679 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:08:21" (1/1) ... [2020-10-14 19:08:21,729 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:08:21" (1/1) ... [2020-10-14 19:08:21,730 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:08:21" (1/1) ... [2020-10-14 19:08:21,800 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:08:21" (1/1) ... [2020-10-14 19:08:21,815 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:08:21" (1/1) ... [2020-10-14 19:08:21,831 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:08:21" (1/1) ... [2020-10-14 19:08:21,848 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 19:08:21,849 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 19:08:21,849 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 19:08:21,849 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 19:08:21,850 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:08:21" (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 19:08:21,918 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 19:08:21,918 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 19:08:21,919 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 19:08:21,919 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 19:08:21,919 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 19:08:21,919 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 19:08:21,919 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 19:08:21,919 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 19:08:21,920 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 19:08:21,920 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 19:08:21,920 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 19:08:23,846 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 19:08:23,846 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 19:08:23,853 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:08:23 BoogieIcfgContainer [2020-10-14 19:08:23,854 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 19:08:23,855 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 19:08:23,855 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 19:08:23,858 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 19:08:23,859 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 07:08:20" (1/3) ... [2020-10-14 19:08:23,860 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c57614e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:08:23, skipping insertion in model container [2020-10-14 19:08:23,860 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:08:21" (2/3) ... [2020-10-14 19:08:23,861 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c57614e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:08:23, skipping insertion in model container [2020-10-14 19:08:23,861 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:08:23" (3/3) ... [2020-10-14 19:08:23,863 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem03_label07.c [2020-10-14 19:08:23,873 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 19:08:23,882 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 19:08:23,896 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 19:08:23,923 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 19:08:23,923 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 19:08:23,924 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 19:08:23,924 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 19:08:23,924 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 19:08:23,924 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 19:08:23,924 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 19:08:23,924 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 19:08:23,955 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states. [2020-10-14 19:08:23,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-10-14 19:08:23,975 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:08:23,977 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:08:23,977 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:08:23,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:08:23,984 INFO L82 PathProgramCache]: Analyzing trace with hash -1461970635, now seen corresponding path program 1 times [2020-10-14 19:08:23,993 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:08:23,994 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1765684156] [2020-10-14 19:08:23,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:08:24,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:08:24,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:08:25,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:08:28,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:08:28,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-10-14 19:08:28,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:08:28,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4013 [2020-10-14 19:08:28,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:08:28,469 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:08:28,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 19:08:28,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 19:08:28,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-14 19:08:28,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 19:08:28,844 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:08:28,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:08:28,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:08:28,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:08:28,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:08:28,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:08:28,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:08:28,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-14 19:08:28,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:08:28,886 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:08:28,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:08:28,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:08:28,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 19:08:28,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:08:28,977 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 19:08:28,978 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1765684156] [2020-10-14 19:08:28,980 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 19:08:28,980 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 19:08:28,981 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816211341] [2020-10-14 19:08:28,986 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 19:08:28,987 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:08:29,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 19:08:29,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 19:08:29,006 INFO L87 Difference]: Start difference. First operand 311 states. Second operand 5 states. [2020-10-14 19:08:29,191 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:08:29,720 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 19:08:33,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:08:33,387 INFO L93 Difference]: Finished difference Result 1104 states and 1964 transitions. [2020-10-14 19:08:33,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 19:08:33,390 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 178 [2020-10-14 19:08:33,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:08:33,413 INFO L225 Difference]: With dead ends: 1104 [2020-10-14 19:08:33,413 INFO L226 Difference]: Without dead ends: 696 [2020-10-14 19:08:33,423 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-14 19:08:33,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2020-10-14 19:08:33,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 472. [2020-10-14 19:08:33,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 472 states. [2020-10-14 19:08:33,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 472 states to 472 states and 722 transitions. [2020-10-14 19:08:33,529 INFO L78 Accepts]: Start accepts. Automaton has 472 states and 722 transitions. Word has length 178 [2020-10-14 19:08:33,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:08:33,531 INFO L479 AbstractCegarLoop]: Abstraction has 472 states and 722 transitions. [2020-10-14 19:08:33,531 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 19:08:33,533 INFO L276 IsEmpty]: Start isEmpty. Operand 472 states and 722 transitions. [2020-10-14 19:08:33,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-10-14 19:08:33,546 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:08:33,549 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:08:33,550 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 19:08:33,550 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:08:33,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:08:33,550 INFO L82 PathProgramCache]: Analyzing trace with hash -863115438, now seen corresponding path program 1 times [2020-10-14 19:08:33,551 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:08:33,551 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [844859032] [2020-10-14 19:08:33,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:08:33,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:08:33,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:08:34,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:08:35,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:08:36,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:08:36,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 197 [2020-10-14 19:08:36,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 19:08:36,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2516 [2020-10-14 19:08:36,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:08:36,139 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:08:36,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:08:36,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 19:08:36,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 177 [2020-10-14 19:08:36,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:08:36,401 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:08:36,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:08:36,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:08:36,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:08:36,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:08:36,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:08:36,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:08:36,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 19:08:36,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:08:36,414 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:08:36,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:08:36,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:08:36,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:08:36,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:08:36,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:08:36,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:08:36,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:08:36,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:08:36,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 19:08:36,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:08:36,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 19:08:36,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:08:36,515 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:08:36,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:08:36,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:08:36,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 19:08:36,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:08:36,574 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 19:08:36,575 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [844859032] [2020-10-14 19:08:36,575 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:08:36,575 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 19:08:36,575 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628284279] [2020-10-14 19:08:36,577 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 19:08:36,578 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:08:36,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 19:08:36,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 19:08:36,578 INFO L87 Difference]: Start difference. First operand 472 states and 722 transitions. Second operand 5 states. [2020-10-14 19:08:36,807 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:08:39,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:08:39,650 INFO L93 Difference]: Finished difference Result 1384 states and 2151 transitions. [2020-10-14 19:08:39,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 19:08:39,651 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 187 [2020-10-14 19:08:39,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:08:39,659 INFO L225 Difference]: With dead ends: 1384 [2020-10-14 19:08:39,659 INFO L226 Difference]: Without dead ends: 918 [2020-10-14 19:08:39,662 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 19:08:39,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 918 states. [2020-10-14 19:08:39,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 918 to 898. [2020-10-14 19:08:39,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 898 states. [2020-10-14 19:08:39,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 898 states to 898 states and 1362 transitions. [2020-10-14 19:08:39,714 INFO L78 Accepts]: Start accepts. Automaton has 898 states and 1362 transitions. Word has length 187 [2020-10-14 19:08:39,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:08:39,715 INFO L479 AbstractCegarLoop]: Abstraction has 898 states and 1362 transitions. [2020-10-14 19:08:39,715 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 19:08:39,715 INFO L276 IsEmpty]: Start isEmpty. Operand 898 states and 1362 transitions. [2020-10-14 19:08:39,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-10-14 19:08:39,720 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:08:39,721 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:08:39,721 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 19:08:39,721 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:08:39,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:08:39,722 INFO L82 PathProgramCache]: Analyzing trace with hash -1477163103, now seen corresponding path program 1 times [2020-10-14 19:08:39,722 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:08:39,722 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [936507706] [2020-10-14 19:08:39,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:08:39,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:08:39,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:08:40,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:08:43,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:08:43,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-10-14 19:08:43,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:08:43,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3287 [2020-10-14 19:08:43,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:08:43,096 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:08:43,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:08:43,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-14 19:08:43,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 177 [2020-10-14 19:08:43,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:08:43,331 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:08:43,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:08:43,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:08:43,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:08:43,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:08:43,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:08:43,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:08:43,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 19:08:43,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:08:43,344 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:08:43,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:08:43,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:08:43,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:08:43,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:08:43,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:08:43,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:08:43,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:08:43,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:08:43,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 19:08:43,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:08:43,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-14 19:08:43,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:08:43,476 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:08:43,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:08:43,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:08:43,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 19:08:43,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:08:43,583 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 19:08:43,584 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [936507706] [2020-10-14 19:08:43,584 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:08:43,585 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 19:08:43,585 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274752046] [2020-10-14 19:08:43,586 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 19:08:43,586 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:08:43,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 19:08:43,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 19:08:43,587 INFO L87 Difference]: Start difference. First operand 898 states and 1362 transitions. Second operand 5 states. [2020-10-14 19:08:43,832 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:08:46,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:08:46,860 INFO L93 Difference]: Finished difference Result 2638 states and 4074 transitions. [2020-10-14 19:08:46,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 19:08:46,862 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 190 [2020-10-14 19:08:46,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:08:46,881 INFO L225 Difference]: With dead ends: 2638 [2020-10-14 19:08:46,881 INFO L226 Difference]: Without dead ends: 1746 [2020-10-14 19:08:46,885 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 19:08:46,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1746 states. [2020-10-14 19:08:46,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1746 to 1739. [2020-10-14 19:08:46,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1739 states. [2020-10-14 19:08:46,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1739 states to 1739 states and 2549 transitions. [2020-10-14 19:08:46,969 INFO L78 Accepts]: Start accepts. Automaton has 1739 states and 2549 transitions. Word has length 190 [2020-10-14 19:08:46,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:08:46,974 INFO L479 AbstractCegarLoop]: Abstraction has 1739 states and 2549 transitions. [2020-10-14 19:08:46,974 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 19:08:46,974 INFO L276 IsEmpty]: Start isEmpty. Operand 1739 states and 2549 transitions. [2020-10-14 19:08:46,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2020-10-14 19:08:46,982 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:08:46,983 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:08:46,983 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 19:08:46,983 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:08:46,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:08:46,984 INFO L82 PathProgramCache]: Analyzing trace with hash -1866349845, now seen corresponding path program 1 times [2020-10-14 19:08:46,984 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:08:46,984 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [449205235] [2020-10-14 19:08:46,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:08:47,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:08:47,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:08:47,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:08:47,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:08:47,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:08:47,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:08:49,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:08:49,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:08:50,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:08:52,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:08:52,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 209 [2020-10-14 19:08:52,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 19:08:52,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-14 19:08:52,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:08:52,044 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:08:52,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:08:52,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-14 19:08:52,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 178 [2020-10-14 19:08:52,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:08:52,350 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:08:52,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:08:52,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:08:52,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:08:52,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:08:52,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:08:52,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:08:52,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 19:08:52,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:08:52,368 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:08:52,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:08:52,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:08:52,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:08:52,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:08:52,489 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-14 19:08:52,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:08:52,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:08:52,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:08:52,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:08:52,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 19:08:52,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:08:52,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 19:08:52,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:08:52,504 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:08:52,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:08:52,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:08:52,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:08:52,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:08:52,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-14 19:08:52,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:08:52,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:08:52,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:08:52,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:08:52,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 19:08:52,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:08:52,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 19:08:52,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:08:52,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:08:52,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:08:52,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:08:52,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 19:08:52,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:08:52,677 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 19:08:52,677 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [449205235] [2020-10-14 19:08:52,678 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:08:52,678 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 19:08:52,679 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485535764] [2020-10-14 19:08:52,680 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 19:08:52,680 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:08:52,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 19:08:52,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 19:08:52,681 INFO L87 Difference]: Start difference. First operand 1739 states and 2549 transitions. Second operand 5 states. [2020-10-14 19:08:53,041 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 19:08:55,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:08:55,267 INFO L93 Difference]: Finished difference Result 4945 states and 7281 transitions. [2020-10-14 19:08:55,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 19:08:55,268 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 197 [2020-10-14 19:08:55,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:08:55,279 INFO L225 Difference]: With dead ends: 4945 [2020-10-14 19:08:55,279 INFO L226 Difference]: Without dead ends: 1742 [2020-10-14 19:08:55,287 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 19:08:55,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1742 states. [2020-10-14 19:08:55,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1742 to 1738. [2020-10-14 19:08:55,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1738 states. [2020-10-14 19:08:55,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1738 states to 1738 states and 2547 transitions. [2020-10-14 19:08:55,359 INFO L78 Accepts]: Start accepts. Automaton has 1738 states and 2547 transitions. Word has length 197 [2020-10-14 19:08:55,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:08:55,360 INFO L479 AbstractCegarLoop]: Abstraction has 1738 states and 2547 transitions. [2020-10-14 19:08:55,360 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 19:08:55,360 INFO L276 IsEmpty]: Start isEmpty. Operand 1738 states and 2547 transitions. [2020-10-14 19:08:55,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2020-10-14 19:08:55,366 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:08:55,367 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:08:55,367 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 19:08:55,367 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:08:55,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:08:55,367 INFO L82 PathProgramCache]: Analyzing trace with hash -314930018, now seen corresponding path program 1 times [2020-10-14 19:08:55,368 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:08:55,368 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1462933191] [2020-10-14 19:08:55,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:08:55,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:08:55,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:08:55,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:08:56,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:08:57,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:08:57,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 207 [2020-10-14 19:08:57,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 19:08:57,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1769 [2020-10-14 19:08:57,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:08:57,179 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:08:57,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:08:57,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-14 19:08:57,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 177 [2020-10-14 19:08:57,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:08:57,415 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:08:57,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:08:57,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:08:57,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:08:57,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:08:57,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:08:57,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:08:57,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 19:08:57,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:08:57,430 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:08:57,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:08:57,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:08:57,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:08:57,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:08:57,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:08:57,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:08:57,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:08:57,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:08:57,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 19:08:57,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:08:57,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-14 19:08:57,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:08:57,554 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:08:57,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:08:57,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:08:57,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 19:08:57,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:08:57,622 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 19:08:57,622 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1462933191] [2020-10-14 19:08:57,623 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:08:57,623 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 19:08:57,623 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870615477] [2020-10-14 19:08:57,624 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 19:08:57,624 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:08:57,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 19:08:57,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 19:08:57,624 INFO L87 Difference]: Start difference. First operand 1738 states and 2547 transitions. Second operand 5 states. [2020-10-14 19:08:57,877 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:09:00,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:09:00,675 INFO L93 Difference]: Finished difference Result 5149 states and 7750 transitions. [2020-10-14 19:09:00,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 19:09:00,679 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 197 [2020-10-14 19:09:00,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:09:00,701 INFO L225 Difference]: With dead ends: 5149 [2020-10-14 19:09:00,701 INFO L226 Difference]: Without dead ends: 3417 [2020-10-14 19:09:00,707 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 19:09:00,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3417 states. [2020-10-14 19:09:00,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3417 to 3410. [2020-10-14 19:09:00,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3410 states. [2020-10-14 19:09:00,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3410 states to 3410 states and 5005 transitions. [2020-10-14 19:09:00,812 INFO L78 Accepts]: Start accepts. Automaton has 3410 states and 5005 transitions. Word has length 197 [2020-10-14 19:09:00,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:09:00,813 INFO L479 AbstractCegarLoop]: Abstraction has 3410 states and 5005 transitions. [2020-10-14 19:09:00,813 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 19:09:00,813 INFO L276 IsEmpty]: Start isEmpty. Operand 3410 states and 5005 transitions. [2020-10-14 19:09:00,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2020-10-14 19:09:00,824 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:09:00,824 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:09:00,825 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 19:09:00,825 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:09:00,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:09:00,825 INFO L82 PathProgramCache]: Analyzing trace with hash 88021546, now seen corresponding path program 1 times [2020-10-14 19:09:00,825 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:09:00,826 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [279529783] [2020-10-14 19:09:00,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:09:00,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:09:00,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:00,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:02,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:03,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:04,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:09:04,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-14 19:09:04,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 19:09:04,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3808 [2020-10-14 19:09:04,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:09:04,676 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:09:04,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:09:04,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-14 19:09:04,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 177 [2020-10-14 19:09:04,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:09:04,962 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:09:04,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:09:04,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:09:04,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:04,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:09:04,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:09:04,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:09:04,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 19:09:04,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:09:04,978 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:09:04,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:09:04,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:09:04,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:09:04,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:09:05,185 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-14 19:09:05,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:09:05,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:09:05,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:05,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:09:05,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-14 19:09:05,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:09:05,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-14 19:09:05,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:09:05,274 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:09:05,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:09:05,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:09:05,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-14 19:09:05,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:09:05,482 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 32 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 19:09:05,482 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [279529783] [2020-10-14 19:09:05,484 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:09:05,484 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 19:09:05,484 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535026862] [2020-10-14 19:09:05,485 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 19:09:05,485 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:09:05,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 19:09:05,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 19:09:05,486 INFO L87 Difference]: Start difference. First operand 3410 states and 5005 transitions. Second operand 5 states. [2020-10-14 19:09:05,635 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-14 19:09:08,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:09:08,130 INFO L93 Difference]: Finished difference Result 7656 states and 11435 transitions. [2020-10-14 19:09:08,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 19:09:08,131 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 214 [2020-10-14 19:09:08,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:09:08,160 INFO L225 Difference]: With dead ends: 7656 [2020-10-14 19:09:08,160 INFO L226 Difference]: Without dead ends: 4252 [2020-10-14 19:09:08,172 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 19:09:08,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4252 states. [2020-10-14 19:09:08,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4252 to 4246. [2020-10-14 19:09:08,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4246 states. [2020-10-14 19:09:08,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4246 states to 4246 states and 6006 transitions. [2020-10-14 19:09:08,301 INFO L78 Accepts]: Start accepts. Automaton has 4246 states and 6006 transitions. Word has length 214 [2020-10-14 19:09:08,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:09:08,301 INFO L479 AbstractCegarLoop]: Abstraction has 4246 states and 6006 transitions. [2020-10-14 19:09:08,301 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 19:09:08,301 INFO L276 IsEmpty]: Start isEmpty. Operand 4246 states and 6006 transitions. [2020-10-14 19:09:08,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2020-10-14 19:09:08,315 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:09:08,315 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:09:08,316 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 19:09:08,316 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:09:08,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:09:08,316 INFO L82 PathProgramCache]: Analyzing trace with hash -83237614, now seen corresponding path program 1 times [2020-10-14 19:09:08,317 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:09:08,318 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1527002856] [2020-10-14 19:09:08,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:09:08,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:09:08,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:08,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:10,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:12,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:09:12,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-14 19:09:12,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 19:09:12,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4152 [2020-10-14 19:09:12,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:09:12,519 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:09:12,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:09:12,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 62 [2020-10-14 19:09:12,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 177 [2020-10-14 19:09:12,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:09:12,834 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:09:12,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:09:12,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:09:12,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:12,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:09:12,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:09:12,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:09:12,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 19:09:12,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:09:12,855 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:09:12,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:09:12,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:09:12,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:09:12,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:09:12,988 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-14 19:09:12,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:09:12,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:09:12,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:13,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:09:13,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 19:09:13,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:09:13,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 19:09:13,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:09:13,005 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:09:13,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:09:13,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:09:13,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:09:13,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:09:13,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 19:09:13,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:09:13,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:13,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:09:13,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-14 19:09:13,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:09:13,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-14 19:09:13,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:09:13,143 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:09:13,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:09:13,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:09:13,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 19:09:13,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 19:09:13,316 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 45 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-14 19:09:13,316 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1527002856] [2020-10-14 19:09:13,317 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:09:13,317 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 19:09:13,317 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980931174] [2020-10-14 19:09:13,318 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 19:09:13,318 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:09:13,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 19:09:13,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 19:09:13,320 INFO L87 Difference]: Start difference. First operand 4246 states and 6006 transitions. Second operand 6 states. [2020-10-14 19:09:13,554 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:09:14,187 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 19:09:17,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:09:17,558 INFO L93 Difference]: Finished difference Result 15218 states and 22202 transitions. [2020-10-14 19:09:17,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 19:09:17,558 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 228 [2020-10-14 19:09:17,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:09:17,613 INFO L225 Difference]: With dead ends: 15218 [2020-10-14 19:09:17,614 INFO L226 Difference]: Without dead ends: 10978 [2020-10-14 19:09:17,625 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 19:09:17,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10978 states. [2020-10-14 19:09:17,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10978 to 10938. [2020-10-14 19:09:17,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10938 states. [2020-10-14 19:09:17,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10938 states to 10938 states and 15979 transitions. [2020-10-14 19:09:17,976 INFO L78 Accepts]: Start accepts. Automaton has 10938 states and 15979 transitions. Word has length 228 [2020-10-14 19:09:17,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:09:17,976 INFO L479 AbstractCegarLoop]: Abstraction has 10938 states and 15979 transitions. [2020-10-14 19:09:17,976 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 19:09:17,977 INFO L276 IsEmpty]: Start isEmpty. Operand 10938 states and 15979 transitions. [2020-10-14 19:09:18,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2020-10-14 19:09:18,008 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:09:18,009 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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 19:09:18,009 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 19:09:18,009 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:09:18,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:09:18,010 INFO L82 PathProgramCache]: Analyzing trace with hash -2006203045, now seen corresponding path program 1 times [2020-10-14 19:09:18,013 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:09:18,014 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1130180300] [2020-10-14 19:09:18,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:09:18,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:09:18,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:18,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:18,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:20,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:23,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:09:23,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 249 [2020-10-14 19:09:23,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 19:09:23,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-14 19:09:23,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:09:23,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:09:23,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 19:09:23,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-14 19:09:23,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-14 19:09:23,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:09:23,266 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:09:23,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:09:23,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:09:23,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:23,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:09:23,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:09:23,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:09:23,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 19:09:23,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:09:23,279 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:09:23,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:09:23,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:09:23,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:09:23,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:09:23,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:09:23,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:09:23,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:23,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:09:23,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 19:09:23,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:09:23,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 19:09:23,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:09:23,415 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:09:23,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:09:23,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:09:23,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 19:09:23,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 19:09:23,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 19:09:23,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:09:23,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:23,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:09:23,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 19:09:23,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:09:23,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-14 19:09:23,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:09:23,513 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:09:23,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:09:23,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:09:23,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 19:09:23,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:09:23,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-14 19:09:23,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:09:23,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:23,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:09:23,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-14 19:09:23,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:09:23,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-14 19:09:23,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:09:23,689 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:09:23,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:09:23,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:09:23,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 19:09:23,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:09:23,810 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 76 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 19:09:23,811 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1130180300] [2020-10-14 19:09:23,811 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:09:23,811 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 19:09:23,812 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635650878] [2020-10-14 19:09:23,813 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 19:09:23,813 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:09:23,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 19:09:23,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-14 19:09:23,815 INFO L87 Difference]: Start difference. First operand 10938 states and 15979 transitions. Second operand 9 states. [2020-10-14 19:09:23,981 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 19:09:24,284 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:09:24,823 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 19:09:29,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:09:29,060 INFO L93 Difference]: Finished difference Result 25748 states and 41307 transitions. [2020-10-14 19:09:29,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 19:09:29,061 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 235 [2020-10-14 19:09:29,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:09:29,143 INFO L225 Difference]: With dead ends: 25748 [2020-10-14 19:09:29,143 INFO L226 Difference]: Without dead ends: 14816 [2020-10-14 19:09:29,177 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-10-14 19:09:29,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14816 states. [2020-10-14 19:09:29,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14816 to 14595. [2020-10-14 19:09:29,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14595 states. [2020-10-14 19:09:29,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14595 states to 14595 states and 19410 transitions. [2020-10-14 19:09:29,677 INFO L78 Accepts]: Start accepts. Automaton has 14595 states and 19410 transitions. Word has length 235 [2020-10-14 19:09:29,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:09:29,678 INFO L479 AbstractCegarLoop]: Abstraction has 14595 states and 19410 transitions. [2020-10-14 19:09:29,678 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 19:09:29,678 INFO L276 IsEmpty]: Start isEmpty. Operand 14595 states and 19410 transitions. [2020-10-14 19:09:29,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2020-10-14 19:09:29,718 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:09:29,719 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 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 19:09:29,719 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 19:09:29,719 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:09:29,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:09:29,720 INFO L82 PathProgramCache]: Analyzing trace with hash 830764218, now seen corresponding path program 1 times [2020-10-14 19:09:29,720 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:09:29,720 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [302282543] [2020-10-14 19:09:29,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:09:29,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:09:29,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:29,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:30,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:34,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:09:34,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 256 [2020-10-14 19:09:34,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 19:09:34,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-10-14 19:09:34,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:09:34,810 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:09:34,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:09:34,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-14 19:09:34,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-14 19:09:34,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:09:34,964 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:09:34,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:09:34,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:09:34,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:34,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:09:34,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:09:34,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:09:34,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 19:09:34,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:09:34,976 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:09:34,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:09:34,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:09:34,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:09:34,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:09:35,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:09:35,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:09:35,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:35,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:09:35,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 19:09:35,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:09:35,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 19:09:35,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:09:35,064 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:09:35,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:09:35,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:09:35,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:09:35,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:09:35,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 19:09:35,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:09:35,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:35,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:09:35,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 19:09:35,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:09:35,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 19:09:35,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:09:35,095 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:09:35,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:09:35,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:09:35,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 19:09:35,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:09:35,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-14 19:09:35,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:09:35,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:35,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:09:35,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-14 19:09:35,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:09:35,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-14 19:09:35,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:09:35,178 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:09:35,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:09:35,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:09:35,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 19:09:35,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:09:35,246 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 86 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-14 19:09:35,246 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [302282543] [2020-10-14 19:09:35,246 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:09:35,247 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 19:09:35,247 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658834048] [2020-10-14 19:09:35,247 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 19:09:35,247 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:09:35,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 19:09:35,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 19:09:35,248 INFO L87 Difference]: Start difference. First operand 14595 states and 19410 transitions. Second operand 7 states. [2020-10-14 19:09:35,636 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:09:36,574 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:09:39,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:09:39,248 INFO L93 Difference]: Finished difference Result 42751 states and 65911 transitions. [2020-10-14 19:09:40,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 19:09:40,065 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 242 [2020-10-14 19:09:40,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:09:40,205 INFO L225 Difference]: With dead ends: 42751 [2020-10-14 19:09:40,205 INFO L226 Difference]: Without dead ends: 28162 [2020-10-14 19:09:40,241 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 19:09:40,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28162 states. [2020-10-14 19:09:41,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28162 to 27120. [2020-10-14 19:09:41,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27120 states. [2020-10-14 19:09:41,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27120 states to 27120 states and 35490 transitions. [2020-10-14 19:09:41,423 INFO L78 Accepts]: Start accepts. Automaton has 27120 states and 35490 transitions. Word has length 242 [2020-10-14 19:09:41,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:09:41,423 INFO L479 AbstractCegarLoop]: Abstraction has 27120 states and 35490 transitions. [2020-10-14 19:09:41,423 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 19:09:41,424 INFO L276 IsEmpty]: Start isEmpty. Operand 27120 states and 35490 transitions. [2020-10-14 19:09:41,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2020-10-14 19:09:41,525 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:09:41,526 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:09:41,526 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 19:09:41,527 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:09:41,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:09:41,528 INFO L82 PathProgramCache]: Analyzing trace with hash -2006248685, now seen corresponding path program 1 times [2020-10-14 19:09:41,528 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:09:41,528 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1648503178] [2020-10-14 19:09:41,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:09:41,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:09:41,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:41,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:41,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:45,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:46,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:09:46,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 272 [2020-10-14 19:09:46,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 19:09:46,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-14 19:09:46,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:09:46,629 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:09:46,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 19:09:46,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 19:09:46,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-14 19:09:46,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:09:46,802 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:09:46,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:09:46,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:09:46,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:46,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:09:46,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:09:46,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:09:46,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 19:09:46,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:09:46,816 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:09:46,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:09:46,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:09:46,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 19:09:46,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:09:46,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:09:46,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:09:46,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:46,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:46,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:09:46,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 19:09:46,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:09:46,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-14 19:09:46,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:09:46,938 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:09:46,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:09:46,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:09:46,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 19:09:46,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:09:46,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 19:09:46,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:09:46,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:47,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:09:47,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-14 19:09:47,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:09:47,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 164 [2020-10-14 19:09:47,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:09:47,135 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:09:47,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:09:47,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:09:47,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-14 19:09:47,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:09:47,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-14 19:09:47,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:09:47,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:47,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:09:47,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-14 19:09:47,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:09:47,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 19:09:47,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:09:47,189 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:09:47,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:09:47,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-14 19:09:47,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:09:47,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:09:47,240 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 81 proven. 32 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-14 19:09:47,241 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1648503178] [2020-10-14 19:09:47,241 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:09:47,241 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 19:09:47,241 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894321588] [2020-10-14 19:09:47,242 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 19:09:47,242 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:09:47,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 19:09:47,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-14 19:09:47,243 INFO L87 Difference]: Start difference. First operand 27120 states and 35490 transitions. Second operand 8 states. [2020-10-14 19:09:47,400 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:09:49,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:09:49,177 INFO L93 Difference]: Finished difference Result 52235 states and 68631 transitions. [2020-10-14 19:09:49,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 19:09:49,178 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 258 [2020-10-14 19:09:49,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:09:49,262 INFO L225 Difference]: With dead ends: 52235 [2020-10-14 19:09:49,262 INFO L226 Difference]: Without dead ends: 25121 [2020-10-14 19:09:49,302 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-10-14 19:09:49,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25121 states. [2020-10-14 19:09:49,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25121 to 25101. [2020-10-14 19:09:49,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25101 states. [2020-10-14 19:09:49,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25101 states to 25101 states and 31675 transitions. [2020-10-14 19:09:49,843 INFO L78 Accepts]: Start accepts. Automaton has 25101 states and 31675 transitions. Word has length 258 [2020-10-14 19:09:49,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:09:49,844 INFO L479 AbstractCegarLoop]: Abstraction has 25101 states and 31675 transitions. [2020-10-14 19:09:49,844 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 19:09:49,844 INFO L276 IsEmpty]: Start isEmpty. Operand 25101 states and 31675 transitions. [2020-10-14 19:09:49,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2020-10-14 19:09:49,877 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:09:49,877 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:09:49,878 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 19:09:49,878 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:09:49,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:09:49,878 INFO L82 PathProgramCache]: Analyzing trace with hash 1173881143, now seen corresponding path program 1 times [2020-10-14 19:09:49,878 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:09:49,879 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1063820377] [2020-10-14 19:09:49,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:09:49,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:09:50,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:50,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:51,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:54,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:09:54,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 314 [2020-10-14 19:09:54,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 19:09:54,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 19:09:54,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:09:54,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:09:54,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:09:54,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-14 19:09:54,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 177 [2020-10-14 19:09:54,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:09:55,169 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:09:55,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:09:55,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:09:55,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:55,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:09:55,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:09:55,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:09:55,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 19:09:55,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:09:55,179 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:09:55,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:09:55,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:09:55,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:09:55,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:09:55,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:09:55,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:09:55,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:55,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:09:55,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 19:09:55,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:09:55,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 19:09:55,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:09:55,273 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:09:55,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:09:55,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:09:55,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:09:55,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:09:55,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 19:09:55,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:09:55,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:55,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:09:55,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-14 19:09:55,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:09:55,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-14 19:09:55,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:09:55,433 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:09:55,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:09:55,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:09:55,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-14 19:09:55,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:09:55,530 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 119 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-14 19:09:55,531 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1063820377] [2020-10-14 19:09:55,531 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:09:55,531 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 19:09:55,531 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165659420] [2020-10-14 19:09:55,532 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 19:09:55,532 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:09:55,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 19:09:55,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 19:09:55,532 INFO L87 Difference]: Start difference. First operand 25101 states and 31675 transitions. Second operand 5 states. [2020-10-14 19:09:55,689 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2020-10-14 19:09:58,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:09:58,421 INFO L93 Difference]: Finished difference Result 63616 states and 80839 transitions. [2020-10-14 19:09:58,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 19:09:58,421 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 302 [2020-10-14 19:09:58,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:09:58,556 INFO L225 Difference]: With dead ends: 63616 [2020-10-14 19:09:58,557 INFO L226 Difference]: Without dead ends: 38521 [2020-10-14 19:09:58,612 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 19:09:58,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38521 states. [2020-10-14 19:09:59,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38521 to 38473. [2020-10-14 19:09:59,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38473 states. [2020-10-14 19:09:59,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38473 states to 38473 states and 48501 transitions. [2020-10-14 19:09:59,685 INFO L78 Accepts]: Start accepts. Automaton has 38473 states and 48501 transitions. Word has length 302 [2020-10-14 19:09:59,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:09:59,685 INFO L479 AbstractCegarLoop]: Abstraction has 38473 states and 48501 transitions. [2020-10-14 19:09:59,686 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 19:09:59,686 INFO L276 IsEmpty]: Start isEmpty. Operand 38473 states and 48501 transitions. [2020-10-14 19:09:59,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2020-10-14 19:09:59,733 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:09:59,734 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:09:59,734 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 19:09:59,734 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:09:59,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:09:59,734 INFO L82 PathProgramCache]: Analyzing trace with hash 471898221, now seen corresponding path program 1 times [2020-10-14 19:09:59,735 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:09:59,738 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1863102489] [2020-10-14 19:09:59,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:09:59,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:09:59,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:59,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:59,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:00,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:01,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:01,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:04,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:10:04,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 330 [2020-10-14 19:10:04,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 19:10:04,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-14 19:10:04,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:10:04,833 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:10:04,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:10:04,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-14 19:10:04,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-14 19:10:04,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:10:05,005 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:10:05,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:10:05,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:10:05,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:05,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:10:05,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:10:05,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:10:05,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 19:10:05,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:10:05,016 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:10:05,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:10:05,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:10:05,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:10:05,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:10:05,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:10:05,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:10:05,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:05,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:10:05,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 19:10:05,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:10:05,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 19:10:05,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:10:05,119 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:10:05,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:10:05,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:10:05,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 19:10:05,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:10:05,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 19:10:05,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:10:05,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:05,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:10:05,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-14 19:10:05,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:10:05,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-14 19:10:05,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:10:05,267 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:10:05,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:10:05,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:10:05,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-14 19:10:05,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:10:05,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-14 19:10:05,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:10:05,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:05,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:10:05,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 19:10:05,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:10:05,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-14 19:10:05,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:10:05,461 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:10:05,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:10:05,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-14 19:10:05,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:10:05,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:10:05,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-10-14 19:10:05,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:10:05,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:05,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:10:05,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-14 19:10:05,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:10:05,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-14 19:10:05,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:10:05,518 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:10:05,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:10:05,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-14 19:10:05,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:10:05,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:10:05,684 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 139 proven. 43 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2020-10-14 19:10:05,684 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1863102489] [2020-10-14 19:10:05,684 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:10:05,684 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 19:10:05,684 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96894734] [2020-10-14 19:10:05,685 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 19:10:05,685 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:10:05,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 19:10:05,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 19:10:05,686 INFO L87 Difference]: Start difference. First operand 38473 states and 48501 transitions. Second operand 7 states. [2020-10-14 19:10:05,975 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:10:07,321 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-14 19:10:09,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:10:09,172 INFO L93 Difference]: Finished difference Result 73025 states and 98052 transitions. [2020-10-14 19:10:09,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 19:10:09,173 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 314 [2020-10-14 19:10:09,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:10:09,283 INFO L225 Difference]: With dead ends: 73025 [2020-10-14 19:10:09,283 INFO L226 Difference]: Without dead ends: 34974 [2020-10-14 19:10:09,491 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 19:10:09,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34974 states. [2020-10-14 19:10:10,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34974 to 34132. [2020-10-14 19:10:10,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34132 states. [2020-10-14 19:10:10,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34132 states to 34132 states and 41403 transitions. [2020-10-14 19:10:10,388 INFO L78 Accepts]: Start accepts. Automaton has 34132 states and 41403 transitions. Word has length 314 [2020-10-14 19:10:10,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:10:10,388 INFO L479 AbstractCegarLoop]: Abstraction has 34132 states and 41403 transitions. [2020-10-14 19:10:10,388 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 19:10:10,388 INFO L276 IsEmpty]: Start isEmpty. Operand 34132 states and 41403 transitions. [2020-10-14 19:10:10,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2020-10-14 19:10:10,428 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:10:10,429 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 19:10:10,429 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 19:10:10,429 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:10:10,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:10:10,429 INFO L82 PathProgramCache]: Analyzing trace with hash -1384201083, now seen corresponding path program 1 times [2020-10-14 19:10:10,430 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:10:10,430 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [951308259] [2020-10-14 19:10:10,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:10:10,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:10:10,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:10,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:10,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:11,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:15,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:10:15,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 351 [2020-10-14 19:10:15,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 19:10:15,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5042 [2020-10-14 19:10:15,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:10:15,569 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:10:15,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:10:15,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-14 19:10:15,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-14 19:10:15,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:10:15,737 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:10:15,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:10:15,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:10:15,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:15,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:10:15,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:10:15,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:10:15,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 19:10:15,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:10:15,746 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:10:15,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:10:15,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:10:15,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:10:15,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:10:15,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:10:15,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:10:15,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:15,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:10:15,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 19:10:15,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:10:15,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 19:10:15,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:10:15,844 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:10:15,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:10:15,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:10:15,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 19:10:15,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:10:15,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 19:10:15,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:10:15,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:16,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:10:16,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-14 19:10:16,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:10:16,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-10-14 19:10:16,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:10:16,038 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:10:16,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:10:16,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:10:16,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-14 19:10:16,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:10:16,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-14 19:10:16,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:10:16,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:16,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:10:16,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 19:10:16,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:10:16,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 19:10:16,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:10:16,136 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:10:16,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:10:16,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-14 19:10:16,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:10:16,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:10:16,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-14 19:10:16,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:10:16,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:16,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:10:16,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-14 19:10:16,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:10:16,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-14 19:10:16,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:10:16,186 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:10:16,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:10:16,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-14 19:10:16,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:10:16,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:10:16,370 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 162 proven. 43 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2020-10-14 19:10:16,370 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [951308259] [2020-10-14 19:10:16,370 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:10:16,371 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 19:10:16,371 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817170790] [2020-10-14 19:10:16,372 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 19:10:16,372 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:10:16,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 19:10:16,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 19:10:16,372 INFO L87 Difference]: Start difference. First operand 34132 states and 41403 transitions. Second operand 7 states. [2020-10-14 19:10:16,623 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-14 19:10:17,845 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-14 19:10:19,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:10:19,812 INFO L93 Difference]: Finished difference Result 74580 states and 94514 transitions. [2020-10-14 19:10:19,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 19:10:19,813 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 335 [2020-10-14 19:10:19,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:10:19,910 INFO L225 Difference]: With dead ends: 74580 [2020-10-14 19:10:19,910 INFO L226 Difference]: Without dead ends: 41706 [2020-10-14 19:10:19,949 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 19:10:19,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41706 states. [2020-10-14 19:10:20,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41706 to 40848. [2020-10-14 19:10:20,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40848 states. [2020-10-14 19:10:21,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40848 states to 40848 states and 48637 transitions. [2020-10-14 19:10:21,015 INFO L78 Accepts]: Start accepts. Automaton has 40848 states and 48637 transitions. Word has length 335 [2020-10-14 19:10:21,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:10:21,016 INFO L479 AbstractCegarLoop]: Abstraction has 40848 states and 48637 transitions. [2020-10-14 19:10:21,016 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 19:10:21,016 INFO L276 IsEmpty]: Start isEmpty. Operand 40848 states and 48637 transitions. [2020-10-14 19:10:21,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2020-10-14 19:10:21,076 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:10:21,077 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 19:10:21,077 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 19:10:21,077 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:10:21,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:10:21,078 INFO L82 PathProgramCache]: Analyzing trace with hash -622551650, now seen corresponding path program 1 times [2020-10-14 19:10:21,078 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:10:21,079 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [37799772] [2020-10-14 19:10:21,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:10:21,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:10:21,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:21,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:22,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:22,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:26,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:10:26,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 351 [2020-10-14 19:10:26,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 19:10:26,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5044 [2020-10-14 19:10:26,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:10:26,237 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:10:26,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 19:10:26,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 19:10:26,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-14 19:10:26,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:10:26,457 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:10:26,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:10:26,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:10:26,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:26,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:10:26,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:10:26,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:10:26,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 19:10:26,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:10:26,476 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:10:26,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:10:26,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:10:26,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 19:10:26,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:10:26,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:10:26,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:10:26,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:26,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:10:26,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-14 19:10:26,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:10:26,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 169 [2020-10-14 19:10:26,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:10:26,763 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:10:26,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:10:26,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:10:26,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-14 19:10:26,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:10:26,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-14 19:10:26,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:10:26,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:26,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:10:26,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 19:10:26,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:10:26,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 19:10:26,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:10:26,853 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:10:26,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:10:26,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:10:26,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 19:10:26,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:10:26,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-14 19:10:26,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:10:26,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:26,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:10:26,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 19:10:26,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:10:26,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 19:10:26,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:10:26,889 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:10:26,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:10:26,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-14 19:10:26,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:10:26,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:10:26,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-14 19:10:26,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:10:26,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:26,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:10:26,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-14 19:10:26,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:10:26,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-14 19:10:26,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:10:26,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:10:26,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:10:26,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-14 19:10:26,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:10:26,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:10:27,072 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 152 proven. 45 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-10-14 19:10:27,072 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [37799772] [2020-10-14 19:10:27,073 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:10:27,073 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 19:10:27,073 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967964113] [2020-10-14 19:10:27,074 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 19:10:27,074 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:10:27,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 19:10:27,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 19:10:27,074 INFO L87 Difference]: Start difference. First operand 40848 states and 48637 transitions. Second operand 8 states. [2020-10-14 19:10:27,268 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-14 19:10:27,910 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 19:10:28,880 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-14 19:10:32,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:10:32,739 INFO L93 Difference]: Finished difference Result 91012 states and 108924 transitions. [2020-10-14 19:10:32,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 19:10:32,740 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 335 [2020-10-14 19:10:32,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:10:32,842 INFO L225 Difference]: With dead ends: 91012 [2020-10-14 19:10:32,842 INFO L226 Difference]: Without dead ends: 51422 [2020-10-14 19:10:32,888 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2020-10-14 19:10:32,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51422 states. [2020-10-14 19:10:33,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51422 to 49664. [2020-10-14 19:10:33,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49664 states. [2020-10-14 19:10:33,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49664 states to 49664 states and 59173 transitions. [2020-10-14 19:10:33,939 INFO L78 Accepts]: Start accepts. Automaton has 49664 states and 59173 transitions. Word has length 335 [2020-10-14 19:10:33,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:10:33,940 INFO L479 AbstractCegarLoop]: Abstraction has 49664 states and 59173 transitions. [2020-10-14 19:10:33,940 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 19:10:33,940 INFO L276 IsEmpty]: Start isEmpty. Operand 49664 states and 59173 transitions. [2020-10-14 19:10:33,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2020-10-14 19:10:33,996 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:10:33,996 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:10:33,996 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 19:10:33,997 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:10:33,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:10:33,997 INFO L82 PathProgramCache]: Analyzing trace with hash 860362247, now seen corresponding path program 1 times [2020-10-14 19:10:33,997 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:10:33,997 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [858333150] [2020-10-14 19:10:33,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:10:34,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:10:34,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:34,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:34,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:34,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:34,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:39,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:10:39,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 362 [2020-10-14 19:10:39,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 19:10:39,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5045 [2020-10-14 19:10:39,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:10:39,123 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:10:39,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:10:39,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-14 19:10:39,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-14 19:10:39,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:10:39,325 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:10:39,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:10:39,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:10:39,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:39,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:10:39,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:10:39,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:10:39,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 19:10:39,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:10:39,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:10:39,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:10:39,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:10:39,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:10:39,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:10:39,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:10:39,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:10:39,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:39,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:10:39,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-14 19:10:39,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:10:39,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-14 19:10:39,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:10:39,471 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:10:39,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:10:39,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:10:39,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-14 19:10:39,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:10:39,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-14 19:10:39,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:10:39,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:39,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:10:39,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-14 19:10:39,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:10:39,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173 [2020-10-14 19:10:39,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:10:39,700 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:10:39,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:10:39,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:10:39,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-14 19:10:39,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:10:39,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-14 19:10:39,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:10:39,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:39,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:10:39,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 19:10:39,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:10:39,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 19:10:39,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:10:39,790 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:10:39,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:10:39,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-14 19:10:39,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:10:39,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:10:39,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-14 19:10:39,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:10:39,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:39,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:10:39,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 19:10:39,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:10:39,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 19:10:39,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:10:39,820 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:10:39,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:10:39,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-14 19:10:39,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:10:39,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:10:39,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-10-14 19:10:39,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:10:39,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:39,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:10:39,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-14 19:10:39,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:10:39,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 19:10:39,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:10:39,858 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:10:39,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:10:39,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-14 19:10:39,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:10:39,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:10:40,078 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 188 proven. 48 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2020-10-14 19:10:40,079 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [858333150] [2020-10-14 19:10:40,079 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:10:40,079 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 19:10:40,080 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771406157] [2020-10-14 19:10:40,080 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 19:10:40,080 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:10:40,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 19:10:40,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 19:10:40,081 INFO L87 Difference]: Start difference. First operand 49664 states and 59173 transitions. Second operand 8 states. [2020-10-14 19:10:40,363 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-10-14 19:10:40,854 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-14 19:10:42,652 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-14 19:10:45,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:10:45,975 INFO L93 Difference]: Finished difference Result 107138 states and 134753 transitions. [2020-10-14 19:10:45,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 19:10:45,975 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 344 [2020-10-14 19:10:45,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:10:46,233 INFO L225 Difference]: With dead ends: 107138 [2020-10-14 19:10:46,233 INFO L226 Difference]: Without dead ends: 61031 [2020-10-14 19:10:46,328 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-14 19:10:46,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61031 states. [2020-10-14 19:10:47,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61031 to 59223. [2020-10-14 19:10:47,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59223 states. [2020-10-14 19:10:47,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59223 states to 59223 states and 70535 transitions. [2020-10-14 19:10:47,811 INFO L78 Accepts]: Start accepts. Automaton has 59223 states and 70535 transitions. Word has length 344 [2020-10-14 19:10:47,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:10:47,812 INFO L479 AbstractCegarLoop]: Abstraction has 59223 states and 70535 transitions. [2020-10-14 19:10:47,812 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 19:10:47,812 INFO L276 IsEmpty]: Start isEmpty. Operand 59223 states and 70535 transitions. [2020-10-14 19:10:47,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2020-10-14 19:10:47,873 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:10:47,873 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:10:47,874 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 19:10:47,874 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:10:47,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:10:47,874 INFO L82 PathProgramCache]: Analyzing trace with hash -1604353149, now seen corresponding path program 1 times [2020-10-14 19:10:47,875 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:10:47,875 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [236503665] [2020-10-14 19:10:47,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:10:47,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:10:48,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:48,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:50,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:10:50,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 358 [2020-10-14 19:10:50,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:10:50,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2778 [2020-10-14 19:10:50,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:10:50,736 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:10:50,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 19:10:50,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 19:10:50,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 160 [2020-10-14 19:10:50,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:10:50,935 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:10:50,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:10:50,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:10:50,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:50,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:10:50,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:10:50,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:10:50,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 19:10:50,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:10:50,945 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:10:50,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:10:50,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:10:50,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:10:50,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:10:51,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:10:51,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:10:51,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:51,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:10:51,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 19:10:51,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:10:51,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 19:10:51,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:10:51,046 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:10:51,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:10:51,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:10:51,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 19:10:51,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:10:51,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-14 19:10:51,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:10:51,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:51,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:10:51,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-14 19:10:51,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:10:51,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 206 [2020-10-14 19:10:51,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:10:51,285 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:10:51,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:10:51,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:10:51,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-14 19:10:51,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:10:51,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-10-14 19:10:51,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:10:51,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:51,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:10:51,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-14 19:10:51,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:10:51,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-14 19:10:51,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:10:51,472 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:10:51,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:10:51,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:10:51,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 19:10:51,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:10:51,689 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 171 proven. 27 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-14 19:10:51,689 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [236503665] [2020-10-14 19:10:51,689 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:10:51,689 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 19:10:51,690 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839760505] [2020-10-14 19:10:51,690 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 19:10:51,690 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:10:51,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 19:10:51,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-14 19:10:51,691 INFO L87 Difference]: Start difference. First operand 59223 states and 70535 transitions. Second operand 8 states. [2020-10-14 19:10:51,861 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-14 19:10:53,475 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-14 19:10:55,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:10:55,397 INFO L93 Difference]: Finished difference Result 126355 states and 151312 transitions. [2020-10-14 19:10:55,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 19:10:55,397 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 344 [2020-10-14 19:10:55,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:10:55,540 INFO L225 Difference]: With dead ends: 126355 [2020-10-14 19:10:55,541 INFO L226 Difference]: Without dead ends: 71575 [2020-10-14 19:10:55,600 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-10-14 19:10:55,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71575 states. [2020-10-14 19:10:56,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71575 to 70330. [2020-10-14 19:10:56,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70330 states. [2020-10-14 19:10:56,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70330 states to 70330 states and 83381 transitions. [2020-10-14 19:10:56,965 INFO L78 Accepts]: Start accepts. Automaton has 70330 states and 83381 transitions. Word has length 344 [2020-10-14 19:10:56,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:10:56,965 INFO L479 AbstractCegarLoop]: Abstraction has 70330 states and 83381 transitions. [2020-10-14 19:10:56,966 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 19:10:56,966 INFO L276 IsEmpty]: Start isEmpty. Operand 70330 states and 83381 transitions. [2020-10-14 19:10:57,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2020-10-14 19:10:57,013 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:10:57,013 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:10:57,013 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 19:10:57,013 INFO L427 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:10:57,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:10:57,014 INFO L82 PathProgramCache]: Analyzing trace with hash 268215609, now seen corresponding path program 1 times [2020-10-14 19:10:57,014 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:10:57,014 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1367783092] [2020-10-14 19:10:57,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:10:57,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:10:57,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:57,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:58,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:00,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:01,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:11:01,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 358 [2020-10-14 19:11:01,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 19:11:01,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4843 [2020-10-14 19:11:01,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:11:01,926 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:11:01,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 19:11:01,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 19:11:01,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 352 [2020-10-14 19:11:01,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:11:02,217 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:11:02,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:11:02,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:11:02,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:02,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:11:02,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:11:02,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:11:02,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 19:11:02,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:11:02,231 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:11:02,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:11:02,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:11:02,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 19:11:02,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:11:02,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:11:02,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:11:02,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:02,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:11:02,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-14 19:11:02,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:11:02,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 168 [2020-10-14 19:11:02,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:11:02,518 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:11:02,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:11:02,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:11:02,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-14 19:11:02,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:11:02,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-14 19:11:02,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:11:02,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:02,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:11:02,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-14 19:11:02,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:11:02,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-14 19:11:02,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:11:02,670 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:11:02,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:11:02,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:11:02,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-14 19:11:02,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:11:02,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-10-14 19:11:02,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:11:02,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:02,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:11:02,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-14 19:11:02,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:11:02,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-14 19:11:02,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:11:02,790 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:11:02,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 19:11:02,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:11:02,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 19:11:02,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:11:02,943 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 54 proven. 163 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-10-14 19:11:02,943 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1367783092] [2020-10-14 19:11:02,943 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:11:02,943 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 19:11:02,944 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809197697] [2020-10-14 19:11:02,944 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 19:11:02,945 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:11:02,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 19:11:02,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-10-14 19:11:02,945 INFO L87 Difference]: Start difference. First operand 70330 states and 83381 transitions. Second operand 10 states. [2020-10-14 19:11:03,113 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:11:03,417 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-14 19:11:04,178 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-14 19:11:04,430 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:11:05,296 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 19:11:12,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:11:12,175 INFO L93 Difference]: Finished difference Result 245153 states and 296960 transitions. [2020-10-14 19:11:12,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-14 19:11:12,176 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 344 [2020-10-14 19:11:12,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:11:12,715 INFO L225 Difference]: With dead ends: 245153 [2020-10-14 19:11:12,715 INFO L226 Difference]: Without dead ends: 179920 [2020-10-14 19:11:12,851 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=158, Invalid=348, Unknown=0, NotChecked=0, Total=506 [2020-10-14 19:11:12,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179920 states. [2020-10-14 19:11:18,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179920 to 177115. [2020-10-14 19:11:18,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177115 states. [2020-10-14 19:11:18,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177115 states to 177115 states and 209934 transitions. [2020-10-14 19:11:18,359 INFO L78 Accepts]: Start accepts. Automaton has 177115 states and 209934 transitions. Word has length 344 [2020-10-14 19:11:18,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:11:18,359 INFO L479 AbstractCegarLoop]: Abstraction has 177115 states and 209934 transitions. [2020-10-14 19:11:18,359 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 19:11:18,359 INFO L276 IsEmpty]: Start isEmpty. Operand 177115 states and 209934 transitions. [2020-10-14 19:11:18,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 356 [2020-10-14 19:11:18,504 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:11:18,505 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:11:18,505 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 19:11:18,505 INFO L427 AbstractCegarLoop]: === Iteration 18 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:11:18,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:11:18,506 INFO L82 PathProgramCache]: Analyzing trace with hash -133077008, now seen corresponding path program 1 times [2020-10-14 19:11:18,506 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:11:18,506 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [876095968] [2020-10-14 19:11:18,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:11:18,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:11:18,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:18,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:21,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:22,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:23,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:11:23,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 369 [2020-10-14 19:11:23,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 19:11:23,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-14 19:11:23,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:11:23,602 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:11:23,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:11:23,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 191 [2020-10-14 19:11:23,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 177 [2020-10-14 19:11:23,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:11:23,833 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:11:23,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:11:23,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:11:23,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:23,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:11:23,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:11:23,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:11:23,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 19:11:23,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:11:23,843 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:11:23,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:11:23,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:11:23,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:11:23,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:11:23,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:11:23,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:11:23,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:23,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:11:23,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-14 19:11:23,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:11:23,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 19:11:23,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:11:23,949 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:11:23,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:11:23,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:11:23,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:11:23,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:11:23,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-14 19:11:23,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:11:23,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:24,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:11:24,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-14 19:11:24,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:11:24,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-14 19:11:24,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:11:24,001 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:11:24,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:11:24,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:11:24,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:11:24,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:11:24,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-10-14 19:11:24,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:11:24,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:24,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:11:24,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-14 19:11:24,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:11:24,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-14 19:11:24,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:11:24,106 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:11:24,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:11:24,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:11:24,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-14 19:11:24,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:11:26,628 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 171 proven. 3 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2020-10-14 19:11:26,628 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [876095968] [2020-10-14 19:11:26,628 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:11:26,629 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 19:11:26,629 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386563210] [2020-10-14 19:11:26,629 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 19:11:26,630 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:11:26,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 19:11:26,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 19:11:26,630 INFO L87 Difference]: Start difference. First operand 177115 states and 209934 transitions. Second operand 5 states. [2020-10-14 19:11:26,843 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 19:11:30,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:11:30,656 INFO L93 Difference]: Finished difference Result 351096 states and 416023 transitions. [2020-10-14 19:11:30,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 19:11:30,657 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 355 [2020-10-14 19:11:30,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:11:31,217 INFO L225 Difference]: With dead ends: 351096 [2020-10-14 19:11:31,217 INFO L226 Difference]: Without dead ends: 180752 [2020-10-14 19:11:31,388 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 19:11:31,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180752 states. [2020-10-14 19:11:34,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180752 to 178150. [2020-10-14 19:11:34,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178150 states. [2020-10-14 19:11:34,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178150 states to 178150 states and 211317 transitions. [2020-10-14 19:11:34,637 INFO L78 Accepts]: Start accepts. Automaton has 178150 states and 211317 transitions. Word has length 355 [2020-10-14 19:11:34,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:11:34,638 INFO L479 AbstractCegarLoop]: Abstraction has 178150 states and 211317 transitions. [2020-10-14 19:11:34,638 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 19:11:34,638 INFO L276 IsEmpty]: Start isEmpty. Operand 178150 states and 211317 transitions. [2020-10-14 19:11:34,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2020-10-14 19:11:34,798 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:11:34,798 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:11:34,798 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 19:11:34,798 INFO L427 AbstractCegarLoop]: === Iteration 19 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:11:34,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:11:34,799 INFO L82 PathProgramCache]: Analyzing trace with hash -1009877892, now seen corresponding path program 1 times [2020-10-14 19:11:34,799 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:11:34,799 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [956979857] [2020-10-14 19:11:34,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:11:34,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:11:34,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:35,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:36,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:41,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:11:41,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 390 [2020-10-14 19:11:41,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 19:11:41,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7112 [2020-10-14 19:11:41,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:11:41,987 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:11:41,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 19:11:41,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 19:11:41,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 192 [2020-10-14 19:11:41,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:11:42,295 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:11:42,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:11:42,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:11:42,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:42,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:11:42,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:11:42,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:11:42,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 19:11:42,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:11:42,305 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:11:42,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:11:42,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:11:42,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:11:42,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:11:42,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:11:42,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:11:42,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:42,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:11:42,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 19:11:42,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:11:42,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 19:11:42,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:11:42,411 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:11:42,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:11:42,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:11:42,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 19:11:42,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:11:42,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-14 19:11:42,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:11:42,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:42,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:11:42,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-14 19:11:42,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:11:42,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 310 [2020-10-14 19:11:42,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:11:42,762 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:11:42,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 19:11:42,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:11:42,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-14 19:11:42,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:11:42,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-10-14 19:11:42,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:11:42,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:43,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:11:43,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-14 19:11:43,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:11:43,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 285 [2020-10-14 19:11:43,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:11:43,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:11:43,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 19:11:43,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:11:43,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-14 19:11:43,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5